Update README.md

Fix: Linux Linking Error

.github/workflows/run-assimp-go.yml

@@ -0,0 +1,20 @@
+name: Build-AssImp
+on:
+  create:
+
+jobs:
+  Run-assimp-go-macos:
+    runs-on: macos-10.15
+    steps:
+      - name: Install golang 1.17
+        uses: actions/setup-go@v2
+        with:
+          go-version: '^1.17'
+      - name: Clone assimp-go
+        run: git clone https://github.com/bloeys/assimp-go
+      - name: Copy dylib
+        working-directory: assimp-go
+        run: sudo mkdir -p /usr/local/lib && sudo cp asig/libs/libassimp_darwin_amd64.dylib /usr/local/lib/libassimp.5.dylib
+      - name: Run assimp-go
+        working-directory: assimp-go
+        run: go run .

.gitignore

@@ -11,8 +11,12 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
-# Dependency directories (remove the comment below to include it)
+# Custom
 vendor/
+.DS_Store
 *.obj
+!obj.obj
 *.fbx
-*.glb
+*.glb
+!libassimp_darwin_arm64.dylib
+!libassimp_darwin_amd64.dylib

README.md

@@ -1,7 +1,117 @@
 # assimp-go
 
+[![Build](https://github.com/bloeys/assimp-go/actions/workflows/run-assimp-go.yml/badge.svg)](https://github.com/bloeys/assimp-go/actions/workflows/run-assimp-go.yml)
+
+A Handcrafted Open Asset Import Library (AssImp) wrapper for Go.
+
+## Features
+
+The following features are already implemented:
+
+* Loading all supported model formats into a Scene object
+* Mesh data
+* Materials
+* Textures and embedded textures
+* Error reporting
+* Enums relevant to the above operations
+
+Unimplemented (yet) AssImp Scene objects:
+
+* Animation
+* Lights
+* Camera
+
 ## Using assimp-go
 
+### Requirements
+
+To run the project you need:
+
+* A 64-bit machine (32-bit machines should be supportable if we get help adding the needed libs)
+* A recent version of [Go](https://golang.org/) installed (1.17+)
+* A C/C++ compiler installed and in your path
+  * **Windows**: [MingW](https://www.mingw-w64.org/downloads/#mingw-builds) or similar
+  * **Mac/Linux**: Should be installed by default, but if not try [GCC](https://gcc.gnu.org/) or [Clang](https://releases.llvm.org/download.html)
+
+Now to be able to run assimp-go you will need the AssImp shared libraries (DLLs/DyLibs), which you can
+download from the GitHub releases page.
+
+### Installing on Windows
+
+Download the **.dll** of the [release you want](https://github.com/bloeys/assimp-go/releases), and place it in the **root** of your Go project.
+
+### Installing on MacOS
+
+First, download the appropriate **.dylib** for your device (`_amd64` for Intel CPUs and `_arm64` for Apple CPUs).
+Next you will need to rename the lib to `libassimp.5.dylib` and move it to `/usr/local/lib` or `/usr/lib`.
+
+You can use this command to do it: `sudo mkdir -p /usr/local/lib && sudo cp libassimp_darwin*.dylib /usr/local/lib/libassimp.5.dylib`
+
+### Installing on Linux
+
+Download the the AssImp package for your distro, or build from source and add it to your path.
+> NOTE: Insatall assimp >= 3.1 for bindings to work as expected. 
+>       Though getting the latest version is always recommended. 
+
+#### Installing on Ubuntu
+You can install the Asset-Importer-Lib via apt:
+```
+sudo apt-get update
+sudo apt-get install libassimp-dev
+```
+
+#### Installing on Arch 
+You can install the Asset-Importer-Lib via pacman
+```
+sudo pacman -S assimp
+```
+#### Building From Source 
+To build the Asset Importer Package from sorce read the [sorce build guide](https://github.com/assimp/assimp/blob/master/Build.md)
+
+### Running assimp-go
+
+Use `go run .` to run the simple example in `main.go` ;)
+
+> Note: that it might take a while to run the first time because of downloading/compiling dependencies.
+
+### Getting Started
+
+```Go
+func main() {
+
+    //Load this .fbx model with the following post processing flags
+    scene, release, err := asig.ImportFile("my-cube.fbx", asig.PostProcessTriangulate | asig.PostProcessJoinIdenticalVertices)
+    if err != nil {
+            panic(err)
+    }
+
+    for i := 0; i < len(scene.Materials); i++ {
+
+        m := scene.Materials[i]
+
+        //Check how many diffuse textures are attached to this material
+        texCount := asig.GetMaterialTextureCount(m, asig.TextureTypeDiffuse)
+        fmt.Println("Texture count:", texCount)
+
+        //If we have at least 1 diffuse texture attached to this material, load the first diffuse texture (index 0)
+        if texCount > 0 {
+
+            texInfo, err := asig.GetMaterialTexture(m, asig.TextureTypeDiffuse, 0)
+            if err != nil {
+                panic(err)
+            }
+
+            fmt.Printf("%v\n", texInfo)
+        }
+    }
+
+    //Now that we are done with all our `asig.XYZ` calls we can release underlying C resources. 
+    //
+    //NOTE: Our Go objects (like scene, scene.Materials etc) will remain intact ;), but we must NOT use asig.XYZ calls on this scene and its children anymore
+    release()
+}
+```
+
 The `release()` function is used to free underlying C resources and should be called after all processing that requires C code is done.
 `release()` Will not affect the returned Go structs like `Scene` or `Mesh`. Returned Go data will remain valid.
 
@@ -11,30 +121,34 @@ While `asig` functions should NOT be called on a Scene (or its objects) after th
 
 ## Developing assimp-go
 
-We link against static assimp libraries that are built for each platform and added to the `asig/libs` package.
-Depending on the platform we select one of them and link against it when doing `go build`.
+We link against assimp libraries that are built for each platform and the `.a`/`.dylib` files are added to the `asig/libs` package.
+At build time, the `#cgo` directive choose the appropriate libs and links against them.
 
 The general steps are:
 
-- Copy assimp includes into `asig/assimp`
-- Copy `zlib.h`, `zconf.h` and `irrXML.h` into `asig/zlib` and `asig/irrxml` respectively.
-- Copy static libraries into `asig/libs`
-- Generate the wrappers using `swig -go -c++ -intgosize 64 asig/asig.i`
-- Add `#cgo LDFLAGS: -L ./staticLibs -l zlibstatic -l IrrXML -l assimp` at the top of the 'C' import in `asig.go`
+* Copy assimp includes into `asig/assimp`
+* Copy libraries and DLL import libraries into `asig/libs`
 
-> Note: When dealing with static libraries the compiler will probably (e.g. MinGW does this) ignore `lib` suffixes and `.a`/`.lib` suffixes.
+> Note: When dealing with libraries the compiler will probably (e.g. MinGW does this) ignore `lib` prefixes and `.a`/`.lib` suffixes.
 So if your lib name is `libassimp.a` you need to pass it to CGO as `-l assimp`, otherwise you will get an error about library not found.
 
 For platform specific steps:
 
 **Windows**:
 
-> Note: You must compile with the same C/C++ compiler you use with Go (e.g. if you use MinGW with Go, then compile assimp with MinGW by sepcifying the correct `-G` option)
+> Note: You must compile with the same C/C++ compiler you use with Go (e.g. if you use MinGW with Go, then compile assimp with MinGW by specifying the correct `-G` option to cMake)
 ---
 > Note: If you get compilation errors with things like `File too big` or `can't write 166 bytes to section` then cmake isn't detecting you are using MinGW, so add this flag `-D CMAKE_COMPILER_IS_MINGW=TRUE`
 
 Now assuming you are using MinGW on windows:
 
-- Clone wanted release of assimp and run `cmake CMakeLists.txt -D BUILD_SHARED_LIBS=OFF -D ASSIMP_BUILD_ZLIB=ON -D ASSIMP_BUILD_ASSIMP_TOOLS=OFF -D ASSIMP_BUILD_TESTS=OFF -G "MinGW Makefiles"` in the root folder
-- Run `cmake --build . --parallel 6`
-- Copy the generated `*.lib` (or `*.a`) files into `asig/lib`
+* Clone wanted release of assimp and run `cmake CMakeLists.txt -D ASSIMP_BUILD_ZLIB=ON -D ASSIMP_BUILD_ASSIMP_TOOLS=OFF -G "MinGW Makefiles"` in the root folder
+* Run `cmake --build . --parallel 6`
+* Copy the generated `*.lib` (or `*.a`) files from the `lib` folder and into `asig/libs`, and copy the generated dll from AssImp `bin` folder into the root of `assimp-go`.
+* Copy the generated `libzlibstatic.a` file from `contrib/zlib` and into the `asig/libs` folder.
+
+**MacOS**:
+
+* Clone wanted release of assimp and run `cmake CMakeLists.txt -D ASSIMP_BUILD_ZLIB=ON -D ASSIMP_BUILD_ASSIMP_TOOLS=OFF` in the root folder
+* Run `cmake --build . --parallel 6`
+* Copy the generated `*.dylib` files from the `bin` folder and into both `asig/libs` and `/usr/local/lib`

asig/asig.go

@@ -1,18 +1,18 @@
 package asig
 
 /*
-#cgo CFLAGS: -I .
-#cgo LDFLAGS: -L ./libs -l assimp_windows_amd64 -l IrrXML_windows_amd64 -l zlib_windows_amd64
+#cgo linux CFLAGS:
+#cgo windows,amd64 CFLAGS: -I .
+#cgo darwin,amd64 CFLAGS: -I .
+#cgo darwin,arm64 CFLAGS: -I .
 
-#include <stdlib.h> //Needed for C.free
+#cgo linux LDFLAGS: -lassimp
+#cgo windows,amd64 LDFLAGS: -L libs -l assimp_windows_amd64
+#cgo darwin,amd64 LDFLAGS: -L libs -l assimp_darwin_amd64
+#cgo darwin,arm64 LDFLAGS: -L libs -l assimp_darwin_arm64
 
-#include <assimp/scene.h>
-
-//Functions
-struct aiScene* aiImportFile(const char* pFile, unsigned int pFlags);
-void aiReleaseImport(const struct aiScene* pScene);
-const char* aiGetErrorString();
-unsigned int aiGetMaterialTextureCount(const struct aiMaterial* pMat, enum aiTextureType type);
+#include "wrap.c"
+#include <stdlib.h>
 */
 import "C"
 import (
@@ -23,15 +23,31 @@ import (
 )
 
 type Node struct {
+	Name string
+
+	//The transformation relative to the node's parent
+	Transformation *gglm.Mat4
+
+	//Parent node. NULL if this node is the root node
+	Parent *Node
+
+	//The child nodes of this node. NULL if mNumChildren is 0
+	Children []*Node
+
+	//Each entry is an index into the mesh list of the scene
+	MeshIndicies []uint
+
+	/** Metadata associated with this node or NULL if there is no metadata.
+	 *  Whether any metadata is generated depends on the source file format. See the
+	 * @link importer_notes @endlink page for more information on every source file
+	 * format. Importers that don't document any metadata don't write any.
+	 */
+	Metadata map[string]Metadata
 }
 
 type Animation struct {
 }
 
-type Texel struct {
-	R, G, B, A byte
-}
-
 type EmbeddedTexture struct {
 	cTex *C.struct_aiTexture
 
@@ -88,6 +104,12 @@ type Camera struct {
 }
 
 type Metadata struct {
+	Type  MetadataType
+	Value interface{}
+}
+
+type MetadataEntry struct {
+	Data []byte
 }
 
 type Scene struct {
@@ -152,6 +174,7 @@ func parseScene(cs *C.struct_aiScene) *Scene {
 
 	s := &Scene{cScene: cs}
 	s.Flags = SceneFlag(cs.mFlags)
+	s.RootNode = parseRootNode(cs.mRootNode)
 	s.Meshes = parseMeshes(cs.mMeshes, uint(cs.mNumMeshes))
 	s.Materials = parseMaterials(cs.mMaterials, uint(cs.mNumMaterials))
 	s.Textures = parseTextures(cs.mTextures, uint(s.cScene.mNumTextures))
@@ -159,6 +182,95 @@ func parseScene(cs *C.struct_aiScene) *Scene {
 	return s
 }
 
+func parseRootNode(cNodesIn *C.struct_aiNode) *Node {
+
+	rn := &Node{
+		Name:           parseAiString(cNodesIn.mName),
+		Transformation: parseMat4(&cNodesIn.mTransformation),
+		Parent:         nil,
+		MeshIndicies:   parseUInts(cNodesIn.mMeshes, uint(cNodesIn.mNumMeshes)),
+		Metadata:       parseMetadata(cNodesIn.mMetaData),
+	}
+
+	rn.Children = parseNodes(cNodesIn.mChildren, rn, uint(cNodesIn.mNumChildren))
+	return rn
+}
+
+func parseNodes(cNodesIn **C.struct_aiNode, parent *Node, parentChildrenCount uint) []*Node {
+
+	if cNodesIn == nil {
+		return []*Node{}
+	}
+
+	nodes := make([]*Node, parentChildrenCount)
+	cNodes := unsafe.Slice(cNodesIn, parentChildrenCount)
+
+	for i := 0; i < len(nodes); i++ {
+
+		n := cNodes[i]
+
+		//Fill basic node info
+		nodes[i] = &Node{
+			Name:           parseAiString(n.mName),
+			Transformation: parseMat4(&n.mTransformation),
+			Parent:         parent,
+			MeshIndicies:   parseUInts(n.mMeshes, uint(n.mNumMeshes)),
+			Metadata:       parseMetadata(n.mMetaData),
+		}
+
+		//Parse node's children
+		nodes[i].Children = parseNodes(n.mChildren, nodes[i], uint(n.mNumChildren))
+	}
+
+	return nodes
+}
+
+func parseMetadata(cMetaIn *C.struct_aiMetadata) map[string]Metadata {
+
+	if cMetaIn == nil {
+		return map[string]Metadata{}
+	}
+
+	meta := make(map[string]Metadata, cMetaIn.mNumProperties)
+	cKeys := unsafe.Slice(cMetaIn.mKeys, cMetaIn.mNumProperties)
+	cVals := unsafe.Slice(cMetaIn.mValues, cMetaIn.mNumProperties)
+
+	for i := 0; i < int(cMetaIn.mNumProperties); i++ {
+
+		meta[parseAiString(cKeys[i])] = parseMetadataEntry(cVals[i])
+	}
+
+	return meta
+}
+
+func parseMetadataEntry(cv C.struct_aiMetadataEntry) Metadata {
+
+	m := Metadata{Type: MetadataType(cv.mType)}
+
+	if cv.mData == nil {
+		return m
+	}
+
+	switch m.Type {
+	case MetadataTypeBool:
+		m.Value = *(*bool)(cv.mData)
+	case MetadataTypeFloat32:
+		m.Value = *(*float32)(cv.mData)
+	case MetadataTypeFloat64:
+		m.Value = *(*float64)(cv.mData)
+	case MetadataTypeInt32:
+		m.Value = *(*int32)(cv.mData)
+	case MetadataTypeUint64:
+		m.Value = *(*uint64)(cv.mData)
+	case MetadataTypeString:
+		m.Value = parseAiString(*(*C.struct_aiString)(cv.mData))
+	case MetadataTypeVec3:
+		m.Value = parseVec3((*C.struct_aiVector3D)(cv.mData))
+	}
+
+	return m
+}
+
 func parseTextures(cTexIn **C.struct_aiTexture, count uint) []*EmbeddedTexture {
 
 	if cTexIn == nil {
@@ -367,20 +479,20 @@ func parseBones(cbs **C.struct_aiBone, count uint) []*Bone {
 		bones[i] = &Bone{
 			Name:         parseAiString(cBone.mName),
 			Weights:      parseVertexWeights(cBone.mWeights, uint(cBone.mNumWeights)),
-			OffsetMatrix: parseMat4(&cBone.mOffsetMatrix),
+			OffsetMatrix: *parseMat4(&cBone.mOffsetMatrix),
 		}
 	}
 
 	return bones
 }
 
-func parseMat4(cm4 *C.struct_aiMatrix4x4) gglm.Mat4 {
+func parseMat4(cm4 *C.struct_aiMatrix4x4) *gglm.Mat4 {
 
 	if cm4 == nil {
-		return gglm.Mat4{}
+		return &gglm.Mat4{}
 	}
 
-	return gglm.Mat4{
+	return &gglm.Mat4{
 		Data: [4][4]float32{
 			{float32(cm4.a1), float32(cm4.b1), float32(cm4.c1), float32(cm4.d1)},
 			{float32(cm4.a2), float32(cm4.b2), float32(cm4.c2), float32(cm4.d2)},
@@ -411,6 +523,10 @@ func parseVertexWeights(cWeights *C.struct_aiVertexWeight, count uint) []VertexW
 }
 
 func parseAiString(aiString C.struct_aiString) string {
+	if aiString.length == 0 {
+		return ""
+	}
+
 	return C.GoStringN(&aiString.data[0], C.int(aiString.length))
 }
 

asig/enums.go

@@ -315,3 +315,16 @@ func (mpti MatPropertyTypeInfo) String() string {
 		return "Unknown"
 	}
 }
+
+type MetadataType int32
+
+const (
+	MetadataTypeBool    MetadataType = 0
+	MetadataTypeInt32   MetadataType = 1
+	MetadataTypeUint64  MetadataType = 2
+	MetadataTypeFloat32 MetadataType = 3
+	MetadataTypeFloat64 MetadataType = 4
+	MetadataTypeString  MetadataType = 5
+	MetadataTypeVec3    MetadataType = 6
+	MetadataTypeMAX     MetadataType = 7
+)

asig/irrxml/irrXML.h

@@ -1,547 +0,0 @@
-// Copyright (C) 2002-2005 Nikolaus Gebhardt
-// This file is part of the "Irrlicht Engine" and the "irrXML" project.
-// For conditions of distribution and use, see copyright notice in irrlicht.h and/or irrXML.h
-
-#ifndef __IRR_XML_H_INCLUDED__
-#define __IRR_XML_H_INCLUDED__
-
-#include <stdio.h>
-
-#define IRRXML_API
-// #ifdef _WIN32
-// #   define IRRXML_API __declspec(dllexport)
-// #else
-// #   define IRRXML_API __attribute__ ((visibility("default")))
-// #endif // _WIN32
-
-/** \mainpage irrXML 1.2 API documentation
- <div align="center"><img src="logobig.png" ></div>
-
- \section intro Introduction
-
-  Welcome to the irrXML API documentation.
-  Here you'll find any information you'll need to develop applications with
-  irrXML. If you look for a tutorial on how to start, take a look at the \ref irrxmlexample,
-  at the homepage of irrXML at <A HREF="http://xml.irrlicht3d.org" >xml.irrlicht3d.org</A> 
-  or into the SDK in the directory \example.
- 
-  irrXML is intended to be a high speed and easy-to-use XML Parser for C++, and
-  this documentation is an important part of it. If you have any questions or
-  suggestions, just send a email to the author of the engine, Nikolaus Gebhardt
-  (niko (at) irrlicht3d.org). For more informations about this parser, see \ref history.
-
-  \section features Features
-
-  irrXML provides forward-only, read-only 
-     access to a stream of non validated XML data. It was fully implemented by
-	 Nikolaus Gebhardt. Its current features are:
-
-	 - It it fast as lighting and has very low memory usage. It was 
-	   developed with the intention of being used in 3D games, as it already has been.
-	 - irrXML is very small: It only consists of 60 KB of code and can be added easily
-	   to your existing project.
-	 - Of course, it is platform independent and works with lots of compilers.
-	 - It is able to parse ASCII, UTF-8, UTF-16 and UTF-32 text files, both in 
-	   little and big endian format. 
-	 - Independent of the input file format, the parser can return all strings in ASCII, UTF-8,
-	   UTF-16 and UTF-32 format. 
-	 - With its optional file access abstraction it has the advantage that it can read not
-	   only from files but from any type of data (memory, network, ...). For example when 
-	   used with the Irrlicht Engine, it directly reads from compressed .zip files. 
-	 - Just like the Irrlicht Engine for which it was originally created, it is extremely easy 
-	   to use.
-	 - It has no external dependencies, it does not even need the STL. 
-
-	 Although irrXML has some strenghts, it currently also has the following limitations:
-
-	 - The input xml file is not validated and assumed to be correct. 
-
-    \section irrxmlexample Example
-
-    The following code demonstrates the basic usage of irrXML. A simple xml
-	file like this is parsed:
-    \code
-	<?xml version="1.0"?>
-	<config>
-		<!-- This is a config file for the mesh viewer -->
-		<model file="dwarf.dea" />
-		<messageText caption="Irrlicht Engine Mesh Viewer">
-		Welcome to the Mesh Viewer of the &quot;Irrlicht Engine&quot;.
-		</messageText>
-	</config>
-	\endcode
-
-	The code for parsing this file would look like this:
-	\code
-	#include <irrXML.h>
-	using namespace irr; // irrXML is located in the namespace irr::io
-	using namespace io;
-
-	#include <string> // we use STL strings to store data in this example
-
-	void main()
-	{
-		// create the reader using one of the factory functions
-
-		IrrXMLReader* xml = createIrrXMLReader("config.xml");
-
-		// strings for storing the data we want to get out of the file
-		std::string modelFile;
-		std::string messageText;
-		std::string caption;
-
-		// parse the file until end reached
-
-		while(xml && xml->read())
-		{
-			switch(xml->getNodeType())
-			{
-			case EXN_TEXT:
-				// in this xml file, the only text which occurs is the messageText
-				messageText = xml->getNodeData();
-				break;
-			case EXN_ELEMENT:
-				{
-					if (!strcmp("model", xml->getNodeName()))
-						modelFile = xml->getAttributeValue("file");
-					else
-					if (!strcmp("messageText", xml->getNodeName()))
-						caption = xml->getAttributeValue("caption");
-				}
-				break;
-			}
-		}
-
-		// delete the xml parser after usage
-		delete xml;
-	}
-	\endcode
-
-	\section howto How to use
-
-	Simply add the source files in the /src directory of irrXML to your project. Done.
-
-	\section license License
-
-	The irrXML license is based on the zlib license. Basicly, this means you can do with
-	irrXML whatever you want:
-
-	Copyright (C) 2002-2005 Nikolaus Gebhardt
-
-	This software is provided 'as-is', without any express or implied
-	warranty.  In no event will the authors be held liable for any damages
-	arising from the use of this software.
-
-	Permission is granted to anyone to use this software for any purpose,
-	including commercial applications, and to alter it and redistribute it
-	freely, subject to the following restrictions:
-
-	1. The origin of this software must not be misrepresented; you must not
-		claim that you wrote the original software. If you use this software
-		in a product, an acknowledgment in the product documentation would be
-		appreciated but is not required.
-
-	2. Altered source versions must be plainly marked as such, and must not be
-		misrepresented as being the original software.
-
-	3. This notice may not be removed or altered from any source distribution.
-
-	\section history History
-
-	As lots of references in this documentation and the source show, this xml 
-	parser has originally been a part of the 
-	<A HREF="http://irrlicht.sourceforge.net" >Irrlicht Engine</A>. But because
-	the parser has become very useful with the latest release, people asked for a 
-	separate version of it, to be able to use it in non Irrlicht projects. With
-	irrXML 1.0, this has now been done.
-*/
-
-namespace irr
-{
-namespace io
-{
-	//! Enumeration of all supported source text file formats 
-	enum ETEXT_FORMAT
-	{
-		//! ASCII, file without byte order mark, or not a text file
-		ETF_ASCII,
-
-		//! UTF-8 format
-		ETF_UTF8,
-
-		//! UTF-16 format, big endian
-		ETF_UTF16_BE,
-
-		//! UTF-16 format, little endian
-		ETF_UTF16_LE,
-
-		//! UTF-32 format, big endian
-		ETF_UTF32_BE,
-
-		//! UTF-32 format, little endian
-		ETF_UTF32_LE
-	};
-
-
-	//! Enumeration for all xml nodes which are parsed by IrrXMLReader
-	enum EXML_NODE
-	{
-		//! No xml node. This is usually the node if you did not read anything yet.
-		EXN_NONE,
-
-		//! A xml element, like <foo>
-		EXN_ELEMENT,
-
-		//! End of an xml element, like </foo>
-		EXN_ELEMENT_END,
-
-		//! Text within a xml element: <foo> this is the text. </foo>
-		EXN_TEXT,
-
-		//! An xml comment like &lt;!-- I am a comment --&gt; or a DTD definition.
-		EXN_COMMENT,
-
-		//! An xml cdata section like &lt;![CDATA[ this is some CDATA ]]&gt;
-		EXN_CDATA,
-
-		//! Unknown element.
-		EXN_UNKNOWN
-	};
-
-	//! Callback class for file read abstraction. 
-	/** With this, it is possible to make the xml parser read in other things 
-	than just files. The Irrlicht engine is using this for example to 
-	read xml from compressed .zip files. To make the parser read in 
-	any other data, derive a class from this interface, implement the 
-	two methods to read your data and give a pointer to an instance of
-	your implementation when calling createIrrXMLReader(), 
-	createIrrXMLReaderUTF16() or createIrrXMLReaderUTF32() */
-	class IRRXML_API IFileReadCallBack
-	{
-	public:
-
-		//! virtual destructor
-		virtual ~IFileReadCallBack() {};
-
-		//! Reads an amount of bytes from the file.
-		/** \param buffer: Pointer to buffer where to read bytes will be written to.
-		\param sizeToRead: Amount of bytes to read from the file.
-		\return Returns how much bytes were read. */
-		virtual int read(void* buffer, int sizeToRead) = 0;
-
-		//! Returns size of file in bytes
-		virtual int getSize() = 0;
-	};
-
-	//! Empty class to be used as parent class for IrrXMLReader.
-	/** If you need another class as base class for the xml reader, you can do this by creating
-	the reader using for example new CXMLReaderImpl<char, YourBaseClass>(yourcallback);
-	The Irrlicht Engine for example needs IUnknown as base class for every object to
-	let it automaticly reference countend, hence it replaces IXMLBase with IUnknown.
-	See irrXML.cpp on how this can be done in detail. */
-	class IXMLBase
-	{
-	};	
-
-	//! Interface providing easy read access to a XML file.
-	/** You can create an instance of this reader using one of the factory functions
-	createIrrXMLReader(), createIrrXMLReaderUTF16() and createIrrXMLReaderUTF32().
-	If using the parser from the Irrlicht Engine, please use IFileSystem::createXMLReader() 
-	instead.
-	For a detailed intro how to use the parser, see \ref irrxmlexample and \ref features.
-
-	The typical usage of this parser looks like this:
-	\code
-	#include <irrXML.h>
-	using namespace irr; // irrXML is located in the namespace irr::io
-	using namespace io;
-
-	void main()
-	{
-		// create the reader using one of the factory functions
-		IrrXMLReader* xml = createIrrXMLReader("config.xml");
-
-		if (xml == 0)
-			return; // file could not be opened
-
-		// parse the file until end reached
-		while(xml->read())
-		{
-			// based on xml->getNodeType(), do something.
-		}
-
-		// delete the xml parser after usage
-		delete xml;
-	}
-	\endcode
-	See \ref irrxmlexample for a more detailed example.
-	*/
-	template<class char_type, class super_class>
-	class IIrrXMLReader : public super_class
-	{
-	public:
-
-		//! Destructor
-		virtual ~IIrrXMLReader() {};
-
-		//! Reads forward to the next xml node. 
-		/** \return Returns false, if there was no further node.  */
-		virtual bool read() = 0;
-
-		//! Returns the type of the current XML node.
-		virtual EXML_NODE getNodeType() const = 0;
-
-        //! Returns attribute count of the current XML node. 
-		/** This is usually
-		non null if the current node is EXN_ELEMENT, and the element has attributes.
-		\return Returns amount of attributes of this xml node. */
-		virtual int getAttributeCount() const = 0;
-
-		//! Returns name of an attribute. 
-		/** \param idx: Zero based index, should be something between 0 and getAttributeCount()-1.
-		\return Name of the attribute, 0 if an attribute with this index does not exist. */
-		virtual const char_type* getAttributeName(int idx) const = 0;
-
-		//! Returns the value of an attribute. 
-		/** \param idx: Zero based index, should be something between 0 and getAttributeCount()-1.
-		\return Value of the attribute, 0 if an attribute with this index does not exist. */
-		virtual const char_type* getAttributeValue(int idx) const = 0;
-
-		//! Returns the value of an attribute. 
-		/** \param name: Name of the attribute.
-		\return Value of the attribute, 0 if an attribute with this name does not exist. */
-		virtual const char_type* getAttributeValue(const char_type* name) const = 0;
-
-		//! Returns the value of an attribute in a safe way.
-		/** Like getAttributeValue(), but does not 
-		return 0 if the attribute does not exist. An empty string ("") is returned then.
-		\param name: Name of the attribute.
-		\return Value of the attribute, and "" if an attribute with this name does not exist */
-		virtual const char_type* getAttributeValueSafe(const char_type* name) const = 0;
-
-		//! Returns the value of an attribute as integer. 
-		/** \param name Name of the attribute.
-		\return Value of the attribute as integer, and 0 if an attribute with this name does not exist or
-		the value could not be interpreted as integer. */
-		virtual int getAttributeValueAsInt(const char_type* name) const = 0;
-
-		//! Returns the value of an attribute as integer. 
-		/** \param idx: Zero based index, should be something between 0 and getAttributeCount()-1.
-		\return Value of the attribute as integer, and 0 if an attribute with this index does not exist or
-		the value could not be interpreted as integer. */
-		virtual int getAttributeValueAsInt(int idx) const = 0;
-
-		//! Returns the value of an attribute as float. 
-		/** \param name: Name of the attribute.
-		\return Value of the attribute as float, and 0 if an attribute with this name does not exist or
-		the value could not be interpreted as float. */
-		virtual float getAttributeValueAsFloat(const char_type* name) const = 0;
-
-		//! Returns the value of an attribute as float. 
-		/** \param idx: Zero based index, should be something between 0 and getAttributeCount()-1.
-		\return Value of the attribute as float, and 0 if an attribute with this index does not exist or
-		the value could not be interpreted as float. */
-		virtual float getAttributeValueAsFloat(int idx) const = 0;
-
-		//! Returns the name of the current node. 
-		/** Only non null, if the node type is EXN_ELEMENT.
-		\return Name of the current node or 0 if the node has no name. */
-		virtual const char_type* getNodeName() const = 0;
-
-		//! Returns data of the current node. 
-		/** Only non null if the node has some
-		data and it is of type EXN_TEXT or EXN_UNKNOWN. */
-		virtual const char_type* getNodeData() const = 0;
-
-		//! Returns if an element is an empty element, like <foo />
-		virtual bool isEmptyElement() const = 0;
-
-		//! Returns format of the source xml file. 
-		/** It is not necessary to use
-		this method because the parser will convert the input file format
-		to the format wanted by the user when creating the parser. This
-		method is useful to get/display additional informations. */
-		virtual ETEXT_FORMAT getSourceFormat() const = 0;
-
-		//! Returns format of the strings returned by the parser. 
-		/** This will be UTF8 for example when you created a parser with
-		IrrXMLReaderUTF8() and UTF32 when it has been created using 
-		IrrXMLReaderUTF32. It should not be necessary to call this
-		method and only exists for informational purposes. */
-		virtual ETEXT_FORMAT getParserFormat() const = 0;
-	};
-
-
-	//! defines the utf-16 type.
-	/** Not using wchar_t for this because 
-	wchar_t has 16 bit on windows and 32 bit on other operating systems. */
-	typedef unsigned short char16;
-
-	//! defines the utf-32 type. 
-	/** Not using wchar_t for this because 
-	wchar_t has 16 bit on windows and 32 bit on other operating systems. */
-	typedef unsigned long char32;
-
-	//! A UTF-8 or ASCII character xml parser.
-	/** This means that all character data will be returned in 8 bit ASCII or UTF-8 by this parser. 
-	The file to read can be in any format, it will be converted to UTF-8 if it is not
-	in this format.
-	Create an instance of this with createIrrXMLReader(); 
-	See IIrrXMLReader for description on how to use it. */
-	typedef IIrrXMLReader<char, IXMLBase> IrrXMLReader;
-
-	//! A UTF-16 xml parser. 
-	/** This means that all character data will be returned in UTF-16 by this parser. 
-	The file to read can be in any format, it will be converted to UTF-16 if it is not
-	in this format.
-	Create an instance of this with createIrrXMLReaderUTF16(); 
-	See IIrrXMLReader for description on how to use it.  */
-	typedef IIrrXMLReader<char16, IXMLBase> IrrXMLReaderUTF16;
-
-	//! A UTF-32 xml parser. 
-	/** This means that all character data will be returned in UTF-32 by this parser. 
-	The file to read can be in any format, it will be converted to UTF-32 if it is not
-	in this format.
-	Create an instance of this with createIrrXMLReaderUTF32(); 
-	See IIrrXMLReader for description on how to use it. */
-	typedef IIrrXMLReader<char32, IXMLBase> IrrXMLReaderUTF32;
-
-
-	//! Creates an instance of an UFT-8 or ASCII character xml parser.
-	/** This means that all character data will be returned in 8 bit ASCII or UTF-8. 
-	The file to read can be in any format, it will be converted to UTF-8 if it is not in this format.
-	If you are using the Irrlicht Engine, it is better not to use this function but
-	IFileSystem::createXMLReaderUTF8() instead.
-	\param filename: Name of file to be opened.
-	\return Returns a pointer to the created xml parser. This pointer should be 
-	deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	and the file could not be opened. */
-    IRRXML_API IrrXMLReader* createIrrXMLReader(const char* filename);
-
-	//! Creates an instance of an UFT-8 or ASCII character xml parser.
-	/** This means that all character data will be returned in 8 bit ASCII or UTF-8. The file to read can 
-	be in any format, it will be converted to UTF-8 if it is not in this format.
-	If you are using the Irrlicht Engine, it is better not to use this function but
-	IFileSystem::createXMLReaderUTF8() instead.
-	\param file: Pointer to opened file, must have been opened in binary mode, e.g.
-	using fopen("foo.bar", "wb"); The file will not be closed after it has been read.
-	\return Returns a pointer to the created xml parser. This pointer should be 
-	deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	and the file could not be opened. */
-    IRRXML_API IrrXMLReader* createIrrXMLReader(FILE* file);
-
-	//! Creates an instance of an UFT-8 or ASCII character xml parser. 
-	/** This means that all character data will be returned in 8 bit ASCII or UTF-8. The file to read can 
-	 be in any format, it will be converted to UTF-8 if it is not in this format.
-	 If you are using the Irrlicht Engine, it is better not to use this function but
-	 IFileSystem::createXMLReaderUTF8() instead.
-	 \param callback: Callback for file read abstraction. Implement your own
-	 callback to make the xml parser read in other things than just files. See
-	 IFileReadCallBack for more information about this.
-	 \return Returns a pointer to the created xml parser. This pointer should be 
-	 deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	 and the file could not be opened. */
-    IRRXML_API IrrXMLReader* createIrrXMLReader(IFileReadCallBack* callback);
-
-	//! Creates an instance of an UFT-16 xml parser. 
-	/** This means that
-	all character data will be returned in UTF-16. The file to read can 
-	be in any format, it will be converted to UTF-16 if it is not in this format.
-	If you are using the Irrlicht Engine, it is better not to use this function but
-	IFileSystem::createXMLReader() instead.
-	\param filename: Name of file to be opened.
-	\return Returns a pointer to the created xml parser. This pointer should be 
-	deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	and the file could not be opened. */
-    IRRXML_API IrrXMLReaderUTF16* createIrrXMLReaderUTF16(const char* filename);
-
-	//! Creates an instance of an UFT-16 xml parser. 
-	/** This means that all character data will be returned in UTF-16. The file to read can 
-	be in any format, it will be converted to UTF-16 if it is not in this format.
-	If you are using the Irrlicht Engine, it is better not to use this function but
-	IFileSystem::createXMLReader() instead.
-	\param file: Pointer to opened file, must have been opened in binary mode, e.g.
-	using fopen("foo.bar", "wb"); The file will not be closed after it has been read.
-	\return Returns a pointer to the created xml parser. This pointer should be 
-	deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	and the file could not be opened. */
-    IRRXML_API IrrXMLReaderUTF16* createIrrXMLReaderUTF16(FILE* file);
-
-	//! Creates an instance of an UFT-16 xml parser. 
-	/** This means that all character data will be returned in UTF-16. The file to read can 
-	be in any format, it will be converted to UTF-16 if it is not in this format.
-	If you are using the Irrlicht Engine, it is better not to use this function but
-	IFileSystem::createXMLReader() instead.
-	\param callback: Callback for file read abstraction. Implement your own
-	callback to make the xml parser read in other things than just files. See
-	IFileReadCallBack for more information about this.
-	\return Returns a pointer to the created xml parser. This pointer should be 
-	deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	and the file could not be opened. */
-    IRRXML_API IrrXMLReaderUTF16* createIrrXMLReaderUTF16(IFileReadCallBack* callback);
-
-
-	//! Creates an instance of an UFT-32 xml parser. 
-	/** This means that all character data will be returned in UTF-32. The file to read can 
-	be in any format, it will be converted to UTF-32 if it is not in this format.
-	If you are using the Irrlicht Engine, it is better not to use this function but
-	IFileSystem::createXMLReader() instead.
-	\param filename: Name of file to be opened.
-	\return Returns a pointer to the created xml parser. This pointer should be 
-	deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	and the file could not be opened. */
-    IRRXML_API IrrXMLReaderUTF32* createIrrXMLReaderUTF32(const char* filename);
-
-	//! Creates an instance of an UFT-32 xml parser. 
-	/** This means that all character data will be returned in UTF-32. The file to read can 
-	be in any format, it will be converted to UTF-32 if it is not in this format.
-	if you are using the Irrlicht Engine, it is better not to use this function but
-	IFileSystem::createXMLReader() instead.
-	\param file: Pointer to opened file, must have been opened in binary mode, e.g.
-	using fopen("foo.bar", "wb"); The file will not be closed after it has been read.
-	\return Returns a pointer to the created xml parser. This pointer should be 
-	deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	and the file could not be opened. */
-    IRRXML_API IrrXMLReaderUTF32* createIrrXMLReaderUTF32(FILE* file);
-
-	//! Creates an instance of an UFT-32 xml parser. 
-	/** This means that
-	all character data will be returned in UTF-32. The file to read can 
-	be in any format, it will be converted to UTF-32 if it is not in this format.
-	If you are using the Irrlicht Engine, it is better not to use this function but
-	IFileSystem::createXMLReader() instead.
-	\param callback: Callback for file read abstraction. Implement your own
-	callback to make the xml parser read in other things than just files. See
-	IFileReadCallBack for more information about this.
-	\return Returns a pointer to the created xml parser. This pointer should be 
-	deleted using 'delete' after no longer needed. Returns 0 if an error occured
-	and the file could not be opened. */
-    IRRXML_API IrrXMLReaderUTF32* createIrrXMLReaderUTF32(IFileReadCallBack* callback);
-	
-
-	/*! \file irrxml.h
-    \brief Header file of the irrXML, the Irrlicht XML parser.
-    
-    This file includes everything needed for using irrXML, 
-    the XML parser of the Irrlicht Engine. To use irrXML,
-	you only need to include this file in your project:
-
-	\code
-	#include <irrXML.h>
-	\endcode
-
-	It is also common to use the two namespaces in which irrXML is included, 
-	directly after #including irrXML.h:
-
-	\code
-	#include <irrXML.h>
-	using namespace irr;
-	using namespace io;
-	\endcode
-	*/
-
-} // end namespace io
-} // end namespace irr
-
-#endif // __IRR_XML_H_INCLUDED__
-

asig/material.go

@@ -1,27 +1,18 @@
 package asig
 
 /*
-#cgo CFLAGS: -I .
-#cgo LDFLAGS: -L ./libs -l assimp_windows_amd64 -l IrrXML_windows_amd64 -l zlib_windows_amd64
+#cgo linux CFLAGS:
+#cgo windows,amd64 CFLAGS: -I .
+#cgo darwin,amd64 CFLAGS: -I .
+#cgo darwin,arm64 CFLAGS: -I .
 
-#include <stdlib.h> //Needed for C.free
+#cgo linux LDFLAGS: -lassimp
+#cgo windows,amd64 LDFLAGS: -L libs -l assimp_windows_amd64
+#cgo darwin,amd64 LDFLAGS: -L libs -l assimp_darwin_amd64
+#cgo darwin,arm64 LDFLAGS: -L libs -l assimp_darwin_arm64
 
-#include <assimp/scene.h>
-
-//Functions
-unsigned int aiGetMaterialTextureCount(const struct aiMaterial* pMat, enum aiTextureType type);
-
-enum aiReturn aiGetMaterialTexture(
-	const struct aiMaterial* mat,
-    enum aiTextureType type,
-    unsigned int  index,
-    struct aiString* path,
-    enum aiTextureMapping* mapping,
-    unsigned int* uvindex,
-    ai_real* blend,
-    enum aiTextureOp* op,
-    enum aiTextureMapMode* mapmode,
-    unsigned int* flags);
+#include "wrap.c"
+#include <stdlib.h>
 */
 import "C"
 import (

asig/zlib/zconf.h

@@ -1,536 +0,0 @@
-/* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#ifndef ZCONF_H
-#define ZCONF_H
-/* #undef Z_PREFIX */
-#define Z_HAVE_UNISTD_H
-
-/*
- * If you *really* need a unique prefix for all types and library functions,
- * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
- * Even better than compiling with -DZ_PREFIX would be to use configure to set
- * this permanently in zconf.h using "./configure --zprefix".
- */
-#ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
-#  define Z_PREFIX_SET
-
-/* all linked symbols and init macros */
-#  define _dist_code            z__dist_code
-#  define _length_code          z__length_code
-#  define _tr_align             z__tr_align
-#  define _tr_flush_bits        z__tr_flush_bits
-#  define _tr_flush_block       z__tr_flush_block
-#  define _tr_init              z__tr_init
-#  define _tr_stored_block      z__tr_stored_block
-#  define _tr_tally             z__tr_tally
-#  define adler32               z_adler32
-#  define adler32_combine       z_adler32_combine
-#  define adler32_combine64     z_adler32_combine64
-#  define adler32_z             z_adler32_z
-#  ifndef Z_SOLO
-#    define compress              z_compress
-#    define compress2             z_compress2
-#    define compressBound         z_compressBound
-#  endif
-#  define crc32                 z_crc32
-#  define crc32_combine         z_crc32_combine
-#  define crc32_combine64       z_crc32_combine64
-#  define crc32_z               z_crc32_z
-#  define deflate               z_deflate
-#  define deflateBound          z_deflateBound
-#  define deflateCopy           z_deflateCopy
-#  define deflateEnd            z_deflateEnd
-#  define deflateGetDictionary  z_deflateGetDictionary
-#  define deflateInit           z_deflateInit
-#  define deflateInit2          z_deflateInit2
-#  define deflateInit2_         z_deflateInit2_
-#  define deflateInit_          z_deflateInit_
-#  define deflateParams         z_deflateParams
-#  define deflatePending        z_deflatePending
-#  define deflatePrime          z_deflatePrime
-#  define deflateReset          z_deflateReset
-#  define deflateResetKeep      z_deflateResetKeep
-#  define deflateSetDictionary  z_deflateSetDictionary
-#  define deflateSetHeader      z_deflateSetHeader
-#  define deflateTune           z_deflateTune
-#  define deflate_copyright     z_deflate_copyright
-#  define get_crc_table         z_get_crc_table
-#  ifndef Z_SOLO
-#    define gz_error              z_gz_error
-#    define gz_intmax             z_gz_intmax
-#    define gz_strwinerror        z_gz_strwinerror
-#    define gzbuffer              z_gzbuffer
-#    define gzclearerr            z_gzclearerr
-#    define gzclose               z_gzclose
-#    define gzclose_r             z_gzclose_r
-#    define gzclose_w             z_gzclose_w
-#    define gzdirect              z_gzdirect
-#    define gzdopen               z_gzdopen
-#    define gzeof                 z_gzeof
-#    define gzerror               z_gzerror
-#    define gzflush               z_gzflush
-#    define gzfread               z_gzfread
-#    define gzfwrite              z_gzfwrite
-#    define gzgetc                z_gzgetc
-#    define gzgetc_               z_gzgetc_
-#    define gzgets                z_gzgets
-#    define gzoffset              z_gzoffset
-#    define gzoffset64            z_gzoffset64
-#    define gzopen                z_gzopen
-#    define gzopen64              z_gzopen64
-#    ifdef _WIN32
-#      define gzopen_w              z_gzopen_w
-#    endif
-#    define gzprintf              z_gzprintf
-#    define gzputc                z_gzputc
-#    define gzputs                z_gzputs
-#    define gzread                z_gzread
-#    define gzrewind              z_gzrewind
-#    define gzseek                z_gzseek
-#    define gzseek64              z_gzseek64
-#    define gzsetparams           z_gzsetparams
-#    define gztell                z_gztell
-#    define gztell64              z_gztell64
-#    define gzungetc              z_gzungetc
-#    define gzvprintf             z_gzvprintf
-#    define gzwrite               z_gzwrite
-#  endif
-#  define inflate               z_inflate
-#  define inflateBack           z_inflateBack
-#  define inflateBackEnd        z_inflateBackEnd
-#  define inflateBackInit       z_inflateBackInit
-#  define inflateBackInit_      z_inflateBackInit_
-#  define inflateCodesUsed      z_inflateCodesUsed
-#  define inflateCopy           z_inflateCopy
-#  define inflateEnd            z_inflateEnd
-#  define inflateGetDictionary  z_inflateGetDictionary
-#  define inflateGetHeader      z_inflateGetHeader
-#  define inflateInit           z_inflateInit
-#  define inflateInit2          z_inflateInit2
-#  define inflateInit2_         z_inflateInit2_
-#  define inflateInit_          z_inflateInit_
-#  define inflateMark           z_inflateMark
-#  define inflatePrime          z_inflatePrime
-#  define inflateReset          z_inflateReset
-#  define inflateReset2         z_inflateReset2
-#  define inflateResetKeep      z_inflateResetKeep
-#  define inflateSetDictionary  z_inflateSetDictionary
-#  define inflateSync           z_inflateSync
-#  define inflateSyncPoint      z_inflateSyncPoint
-#  define inflateUndermine      z_inflateUndermine
-#  define inflateValidate       z_inflateValidate
-#  define inflate_copyright     z_inflate_copyright
-#  define inflate_fast          z_inflate_fast
-#  define inflate_table         z_inflate_table
-#  ifndef Z_SOLO
-#    define uncompress            z_uncompress
-#    define uncompress2           z_uncompress2
-#  endif
-#  define zError                z_zError
-#  ifndef Z_SOLO
-#    define zcalloc               z_zcalloc
-#    define zcfree                z_zcfree
-#  endif
-#  define zlibCompileFlags      z_zlibCompileFlags
-#  define zlibVersion           z_zlibVersion
-
-/* all zlib typedefs in zlib.h and zconf.h */
-#  define Byte                  z_Byte
-#  define Bytef                 z_Bytef
-#  define alloc_func            z_alloc_func
-#  define charf                 z_charf
-#  define free_func             z_free_func
-#  ifndef Z_SOLO
-#    define gzFile                z_gzFile
-#  endif
-#  define gz_header             z_gz_header
-#  define gz_headerp            z_gz_headerp
-#  define in_func               z_in_func
-#  define intf                  z_intf
-#  define out_func              z_out_func
-#  define uInt                  z_uInt
-#  define uIntf                 z_uIntf
-#  define uLong                 z_uLong
-#  define uLongf                z_uLongf
-#  define voidp                 z_voidp
-#  define voidpc                z_voidpc
-#  define voidpf                z_voidpf
-
-/* all zlib structs in zlib.h and zconf.h */
-#  define gz_header_s           z_gz_header_s
-#  define internal_state        z_internal_state
-
-#endif
-
-#if defined(__MSDOS__) && !defined(MSDOS)
-#  define MSDOS
-#endif
-#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
-#  define OS2
-#endif
-#if defined(_WINDOWS) && !defined(WINDOWS)
-#  define WINDOWS
-#endif
-#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
-#  ifndef WIN32
-#    define WIN32
-#  endif
-#endif
-#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
-#  if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
-#    ifndef SYS16BIT
-#      define SYS16BIT
-#    endif
-#  endif
-#endif
-
-/*
- * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
- * than 64k bytes at a time (needed on systems with 16-bit int).
- */
-#ifdef SYS16BIT
-#  define MAXSEG_64K
-#endif
-#ifdef MSDOS
-#  define UNALIGNED_OK
-#endif
-
-#ifdef __STDC_VERSION__
-#  ifndef STDC
-#    define STDC
-#  endif
-#  if __STDC_VERSION__ >= 199901L
-#    ifndef STDC99
-#      define STDC99
-#    endif
-#  endif
-#endif
-#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
-#  define STDC
-#endif
-#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
-#  define STDC
-#endif
-#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
-#  define STDC
-#endif
-#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
-#  define STDC
-#endif
-
-#if defined(__OS400__) && !defined(STDC)    /* iSeries (formerly AS/400). */
-#  define STDC
-#endif
-
-#ifndef STDC
-#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
-#    define const       /* note: need a more gentle solution here */
-#  endif
-#endif
-
-#if defined(ZLIB_CONST) && !defined(z_const)
-#  define z_const const
-#else
-#  define z_const
-#endif
-
-#ifdef Z_SOLO
-   typedef unsigned long z_size_t;
-#else
-#  define z_longlong long long
-#  if defined(NO_SIZE_T)
-     typedef unsigned NO_SIZE_T z_size_t;
-#  elif defined(STDC)
-#    include <stddef.h>
-     typedef size_t z_size_t;
-#  else
-     typedef unsigned long z_size_t;
-#  endif
-#  undef z_longlong
-#endif
-
-/* Maximum value for memLevel in deflateInit2 */
-#ifndef MAX_MEM_LEVEL
-#  ifdef MAXSEG_64K
-#    define MAX_MEM_LEVEL 8
-#  else
-#    define MAX_MEM_LEVEL 9
-#  endif
-#endif
-
-/* Maximum value for windowBits in deflateInit2 and inflateInit2.
- * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
- * created by gzip. (Files created by minigzip can still be extracted by
- * gzip.)
- */
-#ifndef MAX_WBITS
-#  define MAX_WBITS   15 /* 32K LZ77 window */
-#endif
-
-/* The memory requirements for deflate are (in bytes):
-            (1 << (windowBits+2)) +  (1 << (memLevel+9))
- that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
- plus a few kilobytes for small objects. For example, if you want to reduce
- the default memory requirements from 256K to 128K, compile with
-     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
- Of course this will generally degrade compression (there's no free lunch).
-
-   The memory requirements for inflate are (in bytes) 1 << windowBits
- that is, 32K for windowBits=15 (default value) plus about 7 kilobytes
- for small objects.
-*/
-
-                        /* Type declarations */
-
-#ifndef OF /* function prototypes */
-#  ifdef STDC
-#    define OF(args)  args
-#  else
-#    define OF(args)  ()
-#  endif
-#endif
-
-#ifndef Z_ARG /* function prototypes for stdarg */
-#  if defined(STDC) || defined(Z_HAVE_STDARG_H)
-#    define Z_ARG(args)  args
-#  else
-#    define Z_ARG(args)  ()
-#  endif
-#endif
-
-/* The following definitions for FAR are needed only for MSDOS mixed
- * model programming (small or medium model with some far allocations).
- * This was tested only with MSC; for other MSDOS compilers you may have
- * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
- * just define FAR to be empty.
- */
-#ifdef SYS16BIT
-#  if defined(M_I86SM) || defined(M_I86MM)
-     /* MSC small or medium model */
-#    define SMALL_MEDIUM
-#    ifdef _MSC_VER
-#      define FAR _far
-#    else
-#      define FAR far
-#    endif
-#  endif
-#  if (defined(__SMALL__) || defined(__MEDIUM__))
-     /* Turbo C small or medium model */
-#    define SMALL_MEDIUM
-#    ifdef __BORLANDC__
-#      define FAR _far
-#    else
-#      define FAR far
-#    endif
-#  endif
-#endif
-
-#if defined(WINDOWS) || defined(WIN32)
-   /* If building or using zlib as a DLL, define ZLIB_DLL.
-    * This is not mandatory, but it offers a little performance increase.
-    */
-#  ifdef ZLIB_DLL
-#    if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
-#      ifdef ZLIB_INTERNAL
-#        define ZEXTERN extern __declspec(dllexport)
-#      else
-#        define ZEXTERN extern __declspec(dllimport)
-#      endif
-#    endif
-#  endif  /* ZLIB_DLL */
-   /* If building or using zlib with the WINAPI/WINAPIV calling convention,
-    * define ZLIB_WINAPI.
-    * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
-    */
-#  ifdef ZLIB_WINAPI
-#    ifdef FAR
-#      undef FAR
-#    endif
-#    include <windows.h>
-     /* No need for _export, use ZLIB.DEF instead. */
-     /* For complete Windows compatibility, use WINAPI, not __stdcall. */
-#    define ZEXPORT WINAPI
-#    ifdef WIN32
-#      define ZEXPORTVA WINAPIV
-#    else
-#      define ZEXPORTVA FAR CDECL
-#    endif
-#  endif
-#endif
-
-#if defined (__BEOS__)
-#  ifdef ZLIB_DLL
-#    ifdef ZLIB_INTERNAL
-#      define ZEXPORT   __declspec(dllexport)
-#      define ZEXPORTVA __declspec(dllexport)
-#    else
-#      define ZEXPORT   __declspec(dllimport)
-#      define ZEXPORTVA __declspec(dllimport)
-#    endif
-#  endif
-#endif
-
-#ifndef ZEXTERN
-#  define ZEXTERN extern
-#endif
-#ifndef ZEXPORT
-#  define ZEXPORT
-#endif
-#ifndef ZEXPORTVA
-#  define ZEXPORTVA
-#endif
-
-#ifndef FAR
-#  define FAR
-#endif
-
-#if !defined(__MACTYPES__)
-typedef unsigned char  Byte;  /* 8 bits */
-#endif
-typedef unsigned int   uInt;  /* 16 bits or more */
-typedef unsigned long  uLong; /* 32 bits or more */
-
-#ifdef SMALL_MEDIUM
-   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
-#  define Bytef Byte FAR
-#else
-   typedef Byte  FAR Bytef;
-#endif
-typedef char  FAR charf;
-typedef int   FAR intf;
-typedef uInt  FAR uIntf;
-typedef uLong FAR uLongf;
-
-#ifdef STDC
-   typedef void const *voidpc;
-   typedef void FAR   *voidpf;
-   typedef void       *voidp;
-#else
-   typedef Byte const *voidpc;
-   typedef Byte FAR   *voidpf;
-   typedef Byte       *voidp;
-#endif
-
-#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
-#  include <limits.h>
-#  if (UINT_MAX == 0xffffffffUL)
-#    define Z_U4 unsigned
-#  elif (ULONG_MAX == 0xffffffffUL)
-#    define Z_U4 unsigned long
-#  elif (USHRT_MAX == 0xffffffffUL)
-#    define Z_U4 unsigned short
-#  endif
-#endif
-
-#ifdef Z_U4
-   typedef Z_U4 z_crc_t;
-#else
-   typedef unsigned long z_crc_t;
-#endif
-
-#ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
-#  define Z_HAVE_UNISTD_H
-#endif
-
-#ifdef HAVE_STDARG_H    /* may be set to #if 1 by ./configure */
-#  define Z_HAVE_STDARG_H
-#endif
-
-#ifdef STDC
-#  ifndef Z_SOLO
-#    include <sys/types.h>      /* for off_t */
-#  endif
-#endif
-
-#if defined(STDC) || defined(Z_HAVE_STDARG_H)
-#  ifndef Z_SOLO
-#    include <stdarg.h>         /* for va_list */
-#  endif
-#endif
-
-#ifdef _WIN32
-#  ifndef Z_SOLO
-#    include <stddef.h>         /* for wchar_t */
-#  endif
-#endif
-
-/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
- * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
- * though the former does not conform to the LFS document), but considering
- * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
- * equivalently requesting no 64-bit operations
- */
-#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
-#  undef _LARGEFILE64_SOURCE
-#endif
-
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-#  define Z_HAVE_UNISTD_H
-#endif
-#ifndef Z_SOLO
-#  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
-#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
-#    ifdef VMS
-#      include <unixio.h>       /* for off_t */
-#    endif
-#    ifndef z_off_t
-#      define z_off_t off_t
-#    endif
-#  endif
-#endif
-
-#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
-#  define Z_LFS64
-#endif
-
-#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
-#  define Z_LARGE64
-#endif
-
-#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
-#  define Z_WANT64
-#endif
-
-#if !defined(SEEK_SET) && !defined(Z_SOLO)
-#  define SEEK_SET        0       /* Seek from beginning of file.  */
-#  define SEEK_CUR        1       /* Seek from current position.  */
-#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
-#endif
-
-#ifndef z_off_t
-#  define z_off_t long
-#endif
-
-#if !defined(_WIN32) && defined(Z_LARGE64)
-#  define z_off64_t off64_t
-#else
-#  if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
-#    define z_off64_t __int64
-#  else
-#    define z_off64_t z_off_t
-#  endif
-#endif
-
-/* MVS linker does not support external names larger than 8 bytes */
-#if defined(__MVS__)
-  #pragma map(deflateInit_,"DEIN")
-  #pragma map(deflateInit2_,"DEIN2")
-  #pragma map(deflateEnd,"DEEND")
-  #pragma map(deflateBound,"DEBND")
-  #pragma map(inflateInit_,"ININ")
-  #pragma map(inflateInit2_,"ININ2")
-  #pragma map(inflateEnd,"INEND")
-  #pragma map(inflateSync,"INSY")
-  #pragma map(inflateSetDictionary,"INSEDI")
-  #pragma map(compressBound,"CMBND")
-  #pragma map(inflate_table,"INTABL")
-  #pragma map(inflate_fast,"INFA")
-  #pragma map(inflate_copyright,"INCOPY")
-#endif
-
-#endif /* ZCONF_H */

go.mod

@@ -2,4 +2,4 @@ module github.com/bloeys/assimp-go
 
 go 1.17
 
-require github.com/bloeys/gglm v0.2.6
+require github.com/bloeys/gglm v0.3.1

go.sum

@@ -1,2 +1,4 @@
 github.com/bloeys/gglm v0.2.6 h1:+6m+GZuabU9GRhtEfqz7NS3fewO1xMcjJEenKVPRosM=
 github.com/bloeys/gglm v0.2.6/go.mod h1:qwJQ0WzV191wAMwlGicbfbChbKoSedMk7gFFX6GnyOk=
+github.com/bloeys/gglm v0.3.1 h1:Sy9upW7SBsBfDXrSmEhid3aQ+7J7itej+upwcxOnPMQ=
+github.com/bloeys/gglm v0.3.1/go.mod h1:qwJQ0WzV191wAMwlGicbfbChbKoSedMk7gFFX6GnyOk=

main.go

@@ -10,12 +10,13 @@ import (
 
 func main() {
 
-	scene, release, err := asig.ImportFile("tex-cube.glb", asig.PostProcessTriangulate)
-	defer release()
-
+	scene, release, err := asig.ImportFile("obj.obj", asig.PostProcessTriangulate|asig.PostProcessJoinIdenticalVertices)
 	if err != nil {
 		panic(err)
 	}
+	defer release()
+
+	fmt.Printf("RootNode: %+v\n\n", scene.RootNode)
 
 	for i := 0; i < len(scene.Meshes); i++ {
 
@@ -28,7 +29,7 @@ func main() {
 	for i := 0; i < len(scene.Materials); i++ {
 
 		m := scene.Materials[i]
-		println("Mesh:", i, "; Props:", len(scene.Materials[i].Properties))
+		println("Material:", i, "; Props:", len(scene.Materials[i].Properties))
 		texCount := asig.GetMaterialTextureCount(m, asig.TextureTypeDiffuse)
 		fmt.Println("Texture count:", texCount)
 
@@ -47,7 +48,7 @@ func main() {
 	for i := 0; i < len(ts); i++ {
 		t := ts[i]
 
-		fmt.Printf("T(%v): Name=%v, Hint=%v, Width=%v, Height=%v, NumTexels=%v", i, t.Filename, t.FormatHint, t.Width, t.Height, len(t.Data))
+		fmt.Printf("T(%v): Name=%v, Hint=%v, Width=%v, Height=%v, NumTexels=%v\n", i, t.Filename, t.FormatHint, t.Width, t.Height, len(t.Data))
 
 		if t.FormatHint == "png" {
 			decodePNG(t.Data)

obj.obj

@@ -0,0 +1,46 @@
+# Blender v2.92.0 OBJ File: ''
+# www.blender.org
+mtllib obj.mtl
+o Cube
+v 2.275618 1.000000 0.349413
+v 3.520138 -1.000000 0.102233
+v 2.275618 1.000000 0.752820
+v 3.520138 -1.000000 1.000000
+v 0.244520 1.000000 0.349413
+v -1.000000 -1.000000 0.102233
+v 0.244520 1.000000 0.752820
+v -1.000000 -1.000000 1.000000
+vt 0.806168 0.568832
+vt 0.693832 0.681168
+vt 0.693832 0.568832
+vt 0.375000 1.000000
+vt 0.375000 0.750000
+vt 0.375000 0.000000
+vt 0.625000 0.250000
+vt 0.375000 0.250000
+vt 0.375000 0.500000
+vt 0.125000 0.750000
+vt 0.125000 0.500000
+vt 0.806168 0.681168
+vt 0.625000 0.931168
+vt 0.625000 0.068832
+vn 0.0000 1.0000 0.0000
+vn 0.0000 0.1227 0.9924
+vn -0.8490 0.5283 0.0000
+vn 0.0000 -1.0000 0.0000
+vn 0.8490 0.5283 0.0000
+vn 0.0000 0.1227 -0.9924
+usemtl Material
+s off
+f 5/1/1 3/2/1 1/3/1
+f 3/2/2 8/4/2 4/5/2
+f 8/6/3 5/7/3 6/8/3
+f 2/9/4 8/10/4 6/11/4
+f 1/3/5 4/5/5 2/9/5
+f 5/7/6 2/9/6 6/8/6
+f 5/1/1 7/12/1 3/2/1
+f 3/2/2 7/13/2 8/4/2
+f 8/6/3 7/14/3 5/7/3
+f 2/9/4 4/5/4 8/10/4
+f 1/3/5 3/2/5 4/5/5
+f 5/7/6 1/3/6 2/9/6