163b797d8b
Note that our copy of GWEN is modified and GWEN is not under active development anymore. We plan to integrate and modify GWEN further into the Bullet Example Browser or rewrite the GUI and drop GWEN fix cube.obj and cube.mtl to enable textures
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[]={"./","./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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