void CPlaneCallback::FillMeshData(Engine::Graphics::IMesh *pMesh)
{
// Declaration
SVertexElement elems[4];
elems[0] = SVertexElement(0, ETYPE_FLOAT3, USG_POSITION, 0);
elems[1] = SVertexElement(sizeof(float) * 3, ETYPE_FLOAT3, USG_NORMAL, 0);
elems[2] = SVertexElement(sizeof(float) * 6, ETYPE_FLOAT2, USG_TEXCOORD, 0);
elems[3] = END_DECLARATION();
pMesh->SetVertexDeclaration(elems);
pMesh->setPrimitiveType(PT_TRIANGLE_STRIP);
float x = m_x * 0.5f;
float y = m_y * 0.5f;
// Data
const int n_verts = 4;
struct Vert { float data[8]; };
Vert v[] =
{
{ -x, 0, y, 0, 1, 0, 0, 0 },
{ x, 0, y, 0, 1, 0, 1, 0 },
{ -x, 0, -y, 0, 1, 0, 0, 1 },
{ x, 0, -y, 0, 1, 0, 1, 1 },
};
IBuffer *vb = pMesh->GetVertexBuffer();
vb->Resize(sizeof(Vert) * n_verts);
void *pData;
vb->Lock(&pData, LOCK_DISCARD);
memcpy(pData, v, sizeof(Vert) * n_verts);
vb->Unlock();
// Subset
IGeometry::TInterval vi(0, n_verts);
IGeometry::TInterval ii(0, 0);
pMesh->AddSubset(vi, ii);
SBoundingVolume bv(VML::Vector3(-x, 0, -y), VML::Vector3(x, 0.001f, y));
pMesh->SetBoundingVolume(bv);
}
void CBoxCallback::FillMeshData(Engine::Graphics::IMesh *pMesh)
{
// Declaration
SVertexElement elems[4];
elems[0] = SVertexElement(0, ETYPE_FLOAT3, USG_POSITION, 0);
elems[1] = SVertexElement(sizeof(float) * 3, ETYPE_FLOAT3, USG_NORMAL, 0);
elems[2] = SVertexElement(sizeof(float) * 6, ETYPE_FLOAT2, USG_TEXCOORD, 0);
elems[3] = END_DECLARATION();
pMesh->SetVertexDeclaration(elems);
pMesh->setPrimitiveType(PT_INDEXED_TRIANGLE_LIST);
// Data
const int n_verts = 36;
struct Vert { float data[8]; };
Vert v[] =
{
{ mA[0], mB[1], mA[2], 0, 1, 0 , 0, 1 },
{ mA[0], mB[1], mB[2], 0, 1, 0 , 0, 0 },
{ mB[0], mB[1], mB[2], 0, 1, 0 , 1, 0 },
{ mB[0], mB[1], mB[2], 0, 1, 0 , 1, 0 },
{ mB[0], mB[1], mA[2], 0, 1, 0 , 1, 1 },
{ mA[0], mB[1], mA[2], 0, 1, 0 , 0, 1 },
{ mA[0], mA[1], mA[2], 0, 0, -1 , 0, 1 },
{ mA[0], mB[1], mA[2], 0, 0, -1 , 0, 0 },
{ mB[0], mB[1], mA[2], 0, 0, -1 , 1, 0 },
{ mB[0], mB[1], mA[2], 0, 0, -1 , 1, 0 },
{ mB[0], mA[1], mA[2], 0, 0, -1 , 1, 1 },
{ mA[0], mA[1], mA[2], 0, 0, -1 , 0, 1 },
{ mA[0], mA[1], mB[2], -1, 0, 0 , 0, 1 },
{ mA[0], mB[1], mB[2], -1, 0, 0 , 0, 0 },
{ mA[0], mB[1], mA[2], -1, 0, 0 , 1, 0 },
{ mA[0], mB[1], mA[2], -1, 0, 0 , 1, 0 },
{ mA[0], mA[1], mA[2], -1, 0, 0 , 1, 1 },
{ mA[0], mA[1], mB[2], -1, 0, 0 , 0, 1 },
{ mA[0], mB[1], mB[2], 0, 0, 1 , 1, 0 },
{ mA[0], mA[1], mB[2], 0, 0, 1 , 1, 1 },
{ mB[0], mA[1], mB[2], 0, 0, 1 , 0, 1 },
{ mB[0], mA[1], mB[2], 0, 0, 1 , 0, 1 },
{ mB[0], mB[1], mB[2], 0, 0, 1 , 0, 0 },
{ mA[0], mB[1], mB[2], 0, 0, 1 , 1, 0 },
{ mB[0], mA[1], mA[2], 1, 0, 0 , 0, 1 },
{ mB[0], mB[1], mA[2], 1, 0, 0 , 0, 0 },
{ mB[0], mB[1], mB[2], 1, 0, 0 , 1, 0 },
{ mB[0], mB[1], mB[2], 1, 0, 0 , 1, 0 },
{ mB[0], mA[1], mB[2], 1, 0, 0 , 1, 1 },
{ mB[0], mA[1], mA[2], 1, 0, 0 , 0, 1 },
{ mA[0], mA[1], mB[2], 0, -1, 0 , 0, 1 },
{ mA[0], mA[1], mA[2], 0, -1, 0 , 0, 0 },
{ mB[0], mA[1], mA[2], 0, -1, 0 , 1, 0 },
{ mB[0], mA[1], mA[2], 0, -1, 0 , 1, 0 },
{ mB[0], mA[1], mB[2], 0, -1, 0 , 1, 1 },
{ mA[0], mA[1], mB[2], 0, -1, 0 , 0, 1 },
};
int i[] = {
0,1,2, 3,4,5, 6,7,8, 9,10,11,
12,13,14, 15,16,17, 18,19,20, 21,22,23,
24,25,26, 27,28,29, 30,31,32, 33,34,35, };
IBuffer *vb = pMesh->GetVertexBuffer();
vb->Resize(sizeof(Vert) * n_verts);
void *pData;
vb->Lock(&pData, LOCK_DISCARD);
memcpy(pData, v, sizeof(Vert) * n_verts);
vb->Unlock();
IBuffer *ib = pMesh->GetIndexBuffer();
ib->Resize(sizeof(int) * n_verts);
ib->Lock(&pData, LOCK_DISCARD);
memcpy(pData, i, sizeof(int) * n_verts);
ib->Unlock();
// Subset
IGeometry::TInterval vi(0, n_verts);
IGeometry::TInterval ii(0, n_verts);
pMesh->AddSubset(vi, ii);
VML::Vector3 vmin(mA[0], mA[1], mA[2]);
VML::Vector3 vmax(mB[0], mB[1], mB[2]);
SBoundingVolume bv(vmin, vmax);
pMesh->SetBoundingVolume(bv);
}
void CSphereCallback::FillMeshData(Engine::Graphics::IMesh *pMesh)
{
// Declaration
SVertexElement elems[4];
elems[0] = SVertexElement(0, ETYPE_FLOAT3, USG_POSITION, 0);
elems[1] = SVertexElement(sizeof(float) * 3, ETYPE_FLOAT3, USG_NORMAL, 0);
elems[2] = SVertexElement(sizeof(float) * 6, ETYPE_FLOAT2, USG_TEXCOORD, 0);
elems[3] = END_DECLARATION();
pMesh->SetVertexDeclaration(elems);
pMesh->setPrimitiveType(PT_INDEXED_TRIANGLE_LIST);
// Data
const int n_verts = (mRings + 1) * (mSegments + 1);
const int n_indcs = 6 * mRings * (mSegments + 1);
void *vertices, *indices;
IBuffer* vb = pMesh->GetVertexBuffer();
IBuffer* ib = pMesh->GetIndexBuffer();
vb->Resize(n_verts * sizeof(float) * 8);
ib->Resize(n_indcs * sizeof(int));
vb->Lock(&vertices, LOCK_DISCARD);
ib->Lock(&indices, LOCK_DISCARD);
const float PI = 3.1415926f;
float fDeltaRingAngle = (PI / mRings);
float fDeltaSegAngle = (2.0f * PI / mSegments);
unsigned short wVerticeIndex = 0 ;
float* pVertex = (float*)vertices;
int* pIndices = (int*)indices;
// Generate the group of rings for the sphere
for(int ring = 0; ring <= mRings; ring++)
{
float r0 = mRadius * sinf (ring * fDeltaRingAngle);
float y0 = mRadius * cosf (ring * fDeltaRingAngle);
// Generate the group of segments for the current ring
for(int seg = 0; seg <= mSegments; seg++)
{
float x0 = r0 * sinf(seg * fDeltaSegAngle);
float z0 = r0 * cosf(seg * fDeltaSegAngle);
// Position
*pVertex++ = x0;
*pVertex++ = y0;
*pVertex++ = z0;
// Normal
VML::Vector3 vNormal(x0, y0, z0);
vNormal.normalize();
*pVertex++ = vNormal.getX();
*pVertex++ = vNormal.getY();
*pVertex++ = vNormal.getZ();
// Texture coordinates
*pVertex++ = 1.0f - (float) seg / (float) mSegments;
*pVertex++ = (float) ring / (float) mRings;
if (ring != mRings)
{
// each vertex (except the last) has six indices pointing to it
*pIndices++ = wVerticeIndex + mSegments + 1;
*pIndices++ = wVerticeIndex;
*pIndices++ = wVerticeIndex + mSegments;
*pIndices++ = wVerticeIndex + mSegments + 1;
*pIndices++ = wVerticeIndex + 1;
*pIndices++ = wVerticeIndex;
wVerticeIndex ++;
}
} // end for seg
} // end for ring
vb->Unlock();
ib->Unlock();
// Subset
IGeometry::TInterval vi(0, n_verts);
IGeometry::TInterval ii(0, n_indcs);
pMesh->AddSubset(vi, ii);
SBoundingVolume bv(VML::Vector3(0), mRadius);
pMesh->SetBoundingVolume(bv);
}
