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updated vehicle demo to load heightfield data from file

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This commit is contained in:
ejcoumans
2007-06-27 19:12:09 +00:00
parent fa2ff30db4
commit 9099d6bed5
1 changed files with 35 additions and 7 deletions
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42
Demos/VehicleDemo/VehicleDemo.cpp
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@@ -130,7 +130,10 @@ void VehicleDemo::setupPhysics()
m_dynamicsWorld->setDebugDrawer(&debugDrawer); m_dynamicsWorld->setDebugDrawer(&debugDrawer);
//m_dynamicsWorld->setGravity(btVector3(0,0,0)); //m_dynamicsWorld->setGravity(btVector3(0,0,0));
btTransform tr;
tr.setIdentity();
//either use heightfield or triangle mesh
//#define USE_TRIMESH_GROUND 1 //#define USE_TRIMESH_GROUND 1
#ifdef USE_TRIMESH_GROUND #ifdef USE_TRIMESH_GROUND
int i; int i;
@@ -199,28 +202,53 @@ const float TRIANGLE_SIZE=20.f;
bool useQuantizedAabbCompression = true; bool useQuantizedAabbCompression = true;
groundShape = new btBvhTriangleMeshShape(indexVertexArrays,useQuantizedAabbCompression); groundShape = new btBvhTriangleMeshShape(indexVertexArrays,useQuantizedAabbCompression);
tr.setOrigin(btVector3(0,-4.5f,0));
#else #else
//testing btHeightfieldTerrainShape //testing btHeightfieldTerrainShape
int width=128; int width=128;
int length=128; int length=128;
unsigned char* heightfieldData = new unsigned char[width*length]; unsigned char* heightfieldData = new unsigned char[width*length];
{
for (int i=0;i<width*length;i++)
{
heightfieldData[i]=0;
}
}
// mRawData = new unsigned char [mSize*mSize]; //allocate memory for data char* filename="heightfield128x128.raw";
// loadFile(filename,mSize*mSize,mRawData); FILE* heightfieldFile = fopen(filename,"r");
if (!heightfieldFile)
{
filename="../../heightfield128x128.raw";
heightfieldFile = fopen(filename,"r");
}
if (heightfieldFile)
{
int numBytes =fread(heightfieldData,1,width*length,heightfieldFile);
//btAssert(numBytes);
if (!numBytes)
{
printf("couldn't read heightfield at %s\n",filename);
}
fclose (heightfieldFile);
}
btScalar maxHeight = 1.f; btScalar maxHeight = 20000.f;
groundShape = new btHeightfieldTerrainShape(width,length,heightfieldData,maxHeight,upIndex); groundShape = new btHeightfieldTerrainShape(width,length,heightfieldData,maxHeight,upIndex);
btVector3 localScaling(10,10,10); btVector3 localScaling(20,20,20);
localScaling[upIndex]=1.f; localScaling[upIndex]=1.f;
groundShape->setLocalScaling(localScaling); groundShape->setLocalScaling(localScaling);
tr.setOrigin(btVector3(0,-64.5f,0));
#endif // #endif //
btTransform tr;
tr.setIdentity();
tr.setOrigin(btVector3(0,-4.5f,0));