assimp/include/aiScene.h

/*
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Open Asset Import Library (ASSIMP)
---------------------------------------------------------------------------

Copyright (c) 2006-2008, ASSIMP Development Team

All rights reserved.

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* Redistributions of source code must retain the above
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  following disclaimer.

* Redistributions in binary form must reproduce the above
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  following disclaimer in the documentation and/or other
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* Neither the name of the ASSIMP team, nor the names of its
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  derived from this software without specific prior
  written permission of the ASSIMP Development Team.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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*/

/** @file Defines the data structures in which the imported scene is returned. */
#ifndef AI_SCENE_H_INC
#define AI_SCENE_H_INC

#include "aiTypes.h"
#include "aiMesh.h"
#include "aiMaterial.h"
#include "aiTexture.h"
#include "aiAnim.h"

#ifdef __cplusplus
extern "C" {
#endif


// ---------------------------------------------------------------------------
/** A node in the imported hierarchy. 
*
* Each node has name, a parent node (except for the root node), 
* a transformation relative to its parent and possibly several child nodes.
* Simple file formats don't support hierarchical structures, for these formats 
* the imported scene does consist of only a single root node with no childs.
*/
// ---------------------------------------------------------------------------
struct aiNode
{
	/** The name of the node. 
	*
	* The name might be empty (length of zero) but all nodes which 
	* need to be accessed afterwards by bones or anims are usually named.
	*/
	C_STRUCT aiString mName;

	/** The transformation relative to the node's parent. */
	aiMatrix4x4 mTransformation;

	/** Parent node. NULL if this node is the root node. */
	C_STRUCT aiNode* mParent;

	/** The number of child nodes of this node. */
	unsigned int mNumChildren;
	/** The child nodes of this node. NULL if mNumChildren is 0. */

	C_STRUCT aiNode** mChildren;

	/** The number of meshes of this node. */
	unsigned int mNumMeshes;

	/** The meshes of this node. Each entry is an index into the mesh */
	unsigned int* mMeshes;

#ifdef __cplusplus
	/** Constructor */
	aiNode() 
	{ 
		mParent = NULL; 
		mNumChildren = 0; mChildren = NULL;
		mNumMeshes = 0; mMeshes = NULL;
	}

	/** Destructor */
	~aiNode()
	{
		for( unsigned int a = 0; a < mNumChildren; a++)
			delete mChildren[a];
		delete [] mChildren;
		delete [] mMeshes;
	}
#endif // __cplusplus
};


// ---------------------------------------------------------------------------
/** The root structure of the imported data. 
* 
* Everything that was imported from the given file can be accessed from here.
*/
// ---------------------------------------------------------------------------
struct aiScene
{
	/** The root node of the hierarchy. 
	* 
	* There will always be at least the root node if the import
	* was successful. Presence of further nodes depends on the 
	* format and content of the imported file.
	*/
	C_STRUCT aiNode* mRootNode;

	/** The number of meshes in the scene. */
	unsigned int mNumMeshes;

	/** The array of meshes. 
	*
	* Use the indices given in the aiNode structure to access 
	* this array. The array is mNumMeshes in size.
	*/
	C_STRUCT aiMesh** mMeshes;

	/** The number of materials in the scene. */
	unsigned int mNumMaterials;

	/** The array of materials. 
	* 
	* Use the index given in each aiMesh structure to access this
	* array. The array is mNumMaterials in size.
	*/
	C_STRUCT aiMaterial** mMaterials;

	/** The number of animations in the scene. */
	unsigned int mNumAnimations; 

	/** The array of animations. 
	*
	* All animations imported from the given file are listed here.
	* The array is mNumAnimations in size.
	*/
	C_STRUCT aiAnimation** mAnimations;

	/** The number of textures embedded into the file */
	unsigned int mNumTextures;

	/** The array of embedded textures.
	* 
	* Not many file formats embedd their textures into the file.
	* Examples include Quake's MDL format (which is also used by
	* some GameStudio<69> versions)
	*/
	C_STRUCT aiTexture** mTextures;

#ifdef __cplusplus
	aiScene()
	{
		mRootNode = NULL;
		mNumMeshes = 0; mMeshes = NULL;
		mNumMaterials = 0; mMaterials = NULL;
		mNumAnimations = 0; mAnimations = NULL;
		mNumTextures = 0; mTextures = NULL;
	}

	~aiScene()
	{
		delete mRootNode;
		for( unsigned int a = 0; a < mNumMeshes; a++)
			delete mMeshes[a];
		delete [] mMeshes;
		for( unsigned int a = 0; a < mNumMaterials; a++)
			delete mMaterials[a];
		delete [] mMaterials;
		for( unsigned int a = 0; a < mNumAnimations; a++)
			delete mAnimations[a];
		delete [] mAnimations;
		for( unsigned int a = 0; a < mNumTextures; a++)
			delete mTextures[a];
		delete [] mTextures;
	}
#endif // __cplusplus
};

#ifdef __cplusplus
}
#endif

#endif // AI_SCENE_H_INC