03bdcc8737
fix texture support: flip texture to make OpenGL happy (lower-left is origin) add path prefix to .obj loader, so materials/textures are loaded ok.
150 lines
3.5 KiB
C++
150 lines
3.5 KiB
C++
#include "ImportObjExample.h"
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#include <vector>
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#include "../OpenGLWindow/GLInstancingRenderer.h"
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#include"Wavefront/tiny_obj_loader.h"
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#include "../OpenGLWindow/GLInstanceGraphicsShape.h"
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#include "btBulletDynamicsCommon.h"
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#include "../OpenGLWindow/SimpleOpenGL3App.h"
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#include "Wavefront2GLInstanceGraphicsShape.h"
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#include "../../Utils/b3ResourcePath.h"
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#include "Bullet3Common/b3FileUtils.h"
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#include "stb_image/stb_image.h"
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#include "../CommonInterfaces/CommonRigidBodyBase.h"
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class ImportObjSetup : public CommonRigidBodyBase
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{
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public:
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ImportObjSetup(struct GUIHelperInterface* helper);
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virtual ~ImportObjSetup();
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virtual void initPhysics();
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virtual void resetCamera()
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{
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float dist = 18;
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float pitch = 120;
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float yaw = 46;
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float targetPos[3]={-2,-2,-2};
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m_guiHelper->resetCamera(dist,pitch,yaw,targetPos[0],targetPos[1],targetPos[2]);
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}
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};
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ImportObjSetup::ImportObjSetup(struct GUIHelperInterface* helper)
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:CommonRigidBodyBase(helper)
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{
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}
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ImportObjSetup::~ImportObjSetup()
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{
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}
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void ImportObjSetup::initPhysics()
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{
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m_guiHelper->setUpAxis(2);
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this->createEmptyDynamicsWorld();
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m_guiHelper->createPhysicsDebugDrawer(m_dynamicsWorld);
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m_dynamicsWorld->getDebugDrawer()->setDebugMode(btIDebugDraw::DBG_DrawWireframe);
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const char* fileName = "cube.obj";//sphere8.obj";//sponza_closed.obj";//sphere8.obj";
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char relativeFileName[1024];
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if (b3ResourcePath::findResourcePath(fileName, relativeFileName, 1024))
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{
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char pathPrefix[1024];
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b3FileUtils::extractPath(relativeFileName, pathPrefix, 1024);
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btVector3 shift(0,0,0);
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btVector3 scaling(1,1,1);
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// int index=10;
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{
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std::vector<tinyobj::shape_t> shapes;
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std::string err = tinyobj::LoadObj(shapes, relativeFileName, pathPrefix);
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GLInstanceGraphicsShape* gfxShape = btgCreateGraphicsShapeFromWavefrontObj(shapes);
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btTransform trans;
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trans.setIdentity();
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trans.setRotation(btQuaternion(btVector3(1,0,0),SIMD_HALF_PI));
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btVector3 position = trans.getOrigin();
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btQuaternion orn = trans.getRotation();
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btVector3 color(1,1,1);
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int textureIndex = -1;
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//try to load some texture
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for (int i=0;i<shapes.size();i++)
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{
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const tinyobj::shape_t& shape = shapes[i];
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if (shape.material.diffuse_texname.length()>0)
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{
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int width,height,n;
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const char* filename = shape.material.diffuse_texname.c_str();
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const unsigned char* image=0;
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const char* prefix[]={ pathPrefix,"./","./data/","../data/","../../data/","../../../data/","../../../../data/"};
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int numprefix = sizeof(prefix)/sizeof(const char*);
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for (int i=0;!image && i<numprefix;i++)
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{
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char relativeFileName[1024];
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sprintf(relativeFileName,"%s%s",prefix[i],filename);
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image = stbi_load(relativeFileName, &width, &height, &n, 0);
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}
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if (image)
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{
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textureIndex = m_guiHelper->getRenderInterface()->registerTexture(image,width,height);
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if (textureIndex>=0)
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{
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break;
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}
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}
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}
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}
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if (1)
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{
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}
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int shapeId = m_guiHelper->getRenderInterface()->registerShape(&gfxShape->m_vertices->at(0).xyzw[0], gfxShape->m_numvertices, &gfxShape->m_indices->at(0), gfxShape->m_numIndices,B3_GL_TRIANGLES,textureIndex);
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//int id =
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m_guiHelper->getRenderInterface()->registerGraphicsInstance(shapeId,position,orn,color,scaling);
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}}
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else
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{
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b3Warning("Cannot find %s\n", fileName);
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}
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}
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CommonExampleInterface* ImportObjCreateFunc(struct CommonExampleOptions& options)
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{
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return new ImportObjSetup(options.m_guiHelper);
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}
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