void PyramidObject::draw( void )
{
glBindVertexArray(this->pyramidModel->vao);
this->isCulled = checkCulling();
char buffer[16];
this->getName(buffer,16);
if (!isCulled)
glDrawElements(GL_TRIANGLES, 6*3, GL_UNSIGNED_SHORT, 0); //The starting point of the IBO
else
{
printf("\n");
printf("Object Culled: %s",buffer);
}
if (SphereRender)
glutWireSphere(this->pyramidModel->cullR, 20,20);
};
void PlanetMesh::generate(const PxVec3& center, PxF32 radius, PxU32 nbX, PxU32 nbY)
{
DELETEARRAY(mIndices);
DELETEARRAY(mVerts);
mNbVerts = 6*nbX*nbY;
mVerts = new PxVec3[mNbVerts];
PxU32 index=0;
for(PxU32 i=0;i<6;i++)
{
for(PxU32 y=0;y<nbY;y++)
{
const PxF32 coeffY = float(y)/float(nbY-1);
for(PxU32 x=0;x<nbX;x++)
{
const PxF32 coeffX = float(x)/float(nbX-1);
const PxF32 xr = coeffX-0.5f;
const PxF32 yr = coeffY-0.5f;
PxVec3 offset;
if(i==0)
{
offset = PxVec3(xr, yr, 0.5f);
}
else if(i==1)
{
offset = PxVec3(xr, yr, -0.5f);
}
else if(i==2)
{
offset = PxVec3(xr, 0.5f, yr);
}
else if(i==3)
{
offset = PxVec3(xr, -0.5f, yr);
}
else if(i==4)
{
offset = PxVec3(0.5f, xr, yr);
}
else
{
offset = PxVec3(-0.5f, xr, yr);
}
offset.normalize();
const float h = sinf(offset.z*10.0f)*sinf(offset.x*10.0f)*sinf(offset.y*10.0f)*2.0f;
offset *= (radius + h);
mVerts[index++] = center + offset;
}
}
}
PX_ASSERT(index==mNbVerts);
mNbTris = 6*(nbX-1)*(nbY-1)*2;
mIndices = new PxU32[mNbTris*3];
PxU32 offset = 0;
PxU32 baseOffset = 0;
for(PxU32 i=0;i<6;i++)
{
for(PxU32 y=0;y<nbY-1;y++)
{
for(PxU32 x=0;x<nbX-1;x++)
{
const PxU32 index0a = baseOffset + x;
const PxU32 index1a = baseOffset + x + nbX;
const PxU32 index2a = baseOffset + x + nbX + 1;
const PxU32 index0b = index0a;
const PxU32 index1b = index2a;
const PxU32 index2b = baseOffset + x + 1;
{
const PxU8 c = checkCulling(center, index0a, index1a, index2a);
mIndices[offset] = index0a;
mIndices[offset+1+c] = index1a;
mIndices[offset+2-c] = index2a;
offset+=3;
}
{
const PxU8 c = checkCulling(center, index0b, index1b, index2b);
mIndices[offset] = index0b;
mIndices[offset+1+c] = index1b;
mIndices[offset+2-c] = index2b;
offset+=3;
}
}
baseOffset += nbX;
}
baseOffset += nbX;
}
PX_ASSERT(offset==mNbTris*3);
}
