// ------------------------------------------------------------------------------------------------
// Build a hexahedron with points.magnitude == 1
unsigned int StandardShapes::MakeHexahedron(std::vector<aiVector3D>& positions,
bool polygons /*= false*/)
{
positions.reserve(positions.size()+36);
const float length = 1.f/1.73205080f;
const aiVector3D v0 = aiVector3D(-1.f,-1.f,-1.f)*length;
const aiVector3D v1 = aiVector3D(1.f,-1.f,-1.f)*length;
const aiVector3D v2 = aiVector3D(1.f,1.f,-1.f)*length;
const aiVector3D v3 = aiVector3D(-1.f,1.f,-1.f)*length;
const aiVector3D v4 = aiVector3D(-1.f,-1.f,1.f)*length;
const aiVector3D v5 = aiVector3D(1.f,-1.f,1.f)*length;
const aiVector3D v6 = aiVector3D(1.f,1.f,1.f)*length;
const aiVector3D v7 = aiVector3D(-1.f,1.f,1.f)*length;
ADD_QUAD(v0,v3,v2,v1);
ADD_QUAD(v0,v1,v5,v4);
ADD_QUAD(v0,v4,v7,v3);
ADD_QUAD(v6,v5,v1,v2);
ADD_QUAD(v6,v2,v3,v7);
ADD_QUAD(v6,v7,v4,v5);
return (polygons ? 4 : 3);
}
RES Camera::_get_gizmo_geometry() const {
Ref<SurfaceTool> surface_tool( memnew( SurfaceTool ));
Ref<FixedMaterial> mat( memnew( FixedMaterial ));
mat->set_parameter( FixedMaterial::PARAM_DIFFUSE,Color(1.0,0.5,1.0,0.5) );
mat->set_line_width(4);
mat->set_flag(Material::FLAG_DOUBLE_SIDED,true);
mat->set_flag(Material::FLAG_UNSHADED,true);
//mat->set_hint(Material::HINT_NO_DEPTH_DRAW,true);
surface_tool->begin(Mesh::PRIMITIVE_LINES);
surface_tool->set_material(mat);
switch(mode) {
case PROJECTION_PERSPECTIVE: {
Vector3 side=Vector3( Math::sin(Math::deg2rad(fov)), 0, -Math::cos(Math::deg2rad(fov)) );
Vector3 nside=side;
nside.x=-nside.x;
Vector3 up=Vector3(0,side.x,0);
#define ADD_TRIANGLE( m_a, m_b, m_c)\
{\
surface_tool->add_vertex(m_a);\
surface_tool->add_vertex(m_b);\
surface_tool->add_vertex(m_b);\
surface_tool->add_vertex(m_c);\
surface_tool->add_vertex(m_c);\
surface_tool->add_vertex(m_a);\
}
ADD_TRIANGLE( Vector3(), side+up, side-up );
ADD_TRIANGLE( Vector3(), nside+up, nside-up );
ADD_TRIANGLE( Vector3(), side+up, nside+up );
ADD_TRIANGLE( Vector3(), side-up, nside-up );
side.x*=0.25;
nside.x*=0.25;
Vector3 tup( 0, up.y*3/2,side.z);
ADD_TRIANGLE( tup, side+up, nside+up );
} break;
case PROJECTION_ORTHOGONAL: {
#define ADD_QUAD( m_a, m_b, m_c, m_d)\
{\
surface_tool->add_vertex(m_a);\
surface_tool->add_vertex(m_b);\
surface_tool->add_vertex(m_b);\
surface_tool->add_vertex(m_c);\
surface_tool->add_vertex(m_c);\
surface_tool->add_vertex(m_d);\
surface_tool->add_vertex(m_d);\
surface_tool->add_vertex(m_a);\
}
float hsize=size*0.5;
Vector3 right(hsize,0,0);
Vector3 up(0,hsize,0);
Vector3 back(0,0,-1.0);
Vector3 front(0,0,0);
ADD_QUAD( -up-right,-up+right,up+right,up-right);
ADD_QUAD( -up-right+back,-up+right+back,up+right+back,up-right+back);
ADD_QUAD( up+right,up+right+back,up-right+back,up-right);
ADD_QUAD( -up+right,-up+right+back,-up-right+back,-up-right);
right.x*=0.25;
Vector3 tup( 0, up.y*3/2,back.z );
ADD_TRIANGLE( tup, right+up+back, -right+up+back );
} break;
}
return surface_tool->commit();
}
void
addWindowGeometry (CompWindow *w,
CompMatrix *matrix,
int nMatrix,
Region region,
Region clip)
{
BoxRec full;
w->texUnits = nMatrix;
full = clip->extents;
if (region->extents.x1 > full.x1)
full.x1 = region->extents.x1;
if (region->extents.y1 > full.y1)
full.y1 = region->extents.y1;
if (region->extents.x2 < full.x2)
full.x2 = region->extents.x2;
if (region->extents.y2 < full.y2)
full.y2 = region->extents.y2;
if (full.x1 < full.x2 && full.y1 < full.y2)
{
BoxPtr pBox;
int nBox;
BoxPtr pClip;
int nClip;
BoxRec cbox;
int vSize;
int n, it, x1, y1, x2, y2;
GLfloat *d;
Bool rect = TRUE;
for (it = 0; it < nMatrix; it++)
{
if (matrix[it].xy != 0.0f || matrix[it].yx != 0.0f)
{
rect = FALSE;
break;
}
}
pBox = region->rects;
nBox = region->numRects;
vSize = 3 + nMatrix * 2;
n = w->vCount / 4;
if ((n + nBox) * vSize * 4 > w->vertexSize)
{
if (!moreWindowVertices (w, (n + nBox) * vSize * 4))
return;
}
d = w->vertices + (w->vCount * vSize);
while (nBox--)
{
x1 = pBox->x1;
y1 = pBox->y1;
x2 = pBox->x2;
y2 = pBox->y2;
pBox++;
if (x1 < full.x1)
x1 = full.x1;
if (y1 < full.y1)
y1 = full.y1;
if (x2 > full.x2)
x2 = full.x2;
if (y2 > full.y2)
y2 = full.y2;
if (x1 < x2 && y1 < y2)
{
nClip = clip->numRects;
if (nClip == 1)
{
if (rect)
{
ADD_RECT (d, matrix, nMatrix, x1, y1, x2, y2);
}
else
{
ADD_QUAD (d, matrix, nMatrix, x1, y1, x2, y2);
}
n++;
}
else
{
pClip = clip->rects;
if (((n + nClip) * vSize * 4) > w->vertexSize)
{
if (!moreWindowVertices (w, (n + nClip) * vSize * 4))
return;
d = w->vertices + (n * vSize * 4);
}
while (nClip--)
{
cbox = *pClip;
pClip++;
if (cbox.x1 < x1)
cbox.x1 = x1;
if (cbox.y1 < y1)
cbox.y1 = y1;
if (cbox.x2 > x2)
cbox.x2 = x2;
if (cbox.y2 > y2)
cbox.y2 = y2;
if (cbox.x1 < cbox.x2 && cbox.y1 < cbox.y2)
{
if (rect)
{
ADD_RECT (d, matrix, nMatrix,
cbox.x1, cbox.y1, cbox.x2, cbox.y2);
}
else
{
ADD_QUAD (d, matrix, nMatrix,
cbox.x1, cbox.y1, cbox.x2, cbox.y2);
}
n++;
}
}
}
}
}
w->vCount = n * 4;
w->vertexStride = vSize;
w->texCoordSize = 2;
w->drawWindowGeometry = drawWindowGeometry;
}
}
void rIndexedShadowVolume_c::addDirectionalIndexedVertexList( const rIndexBuffer_c& oIndices, const rVertexBuffer_c& oVerts, const vec3_c& lightDir, const class planeArray_c* extraPlanesArray, float lightInfinity, const class aabb* bounds )
{
#if 1
// for a single triangle, in worst case we might need to create:
// front cap + end cap + 3 edge quads
// 1 + 1 + 3 * 2 = 2 + 6 = 8 triangles
indices.ensureAllocated_indices( indices.getNumIndices() + oIndices.getNumTriangles() * 8 * 3 );
points.ensureAllocated( points.size() + oVerts.size() * 2 );
#endif
#ifdef OPTIMIZE_SLOW_ADDTRIANGLE
if ( indices.getU16Ptr() == 0 )
return;
u16* pFirstIndex = ( ( u16* )indices.getU16Ptr() ) + indices.getNumIndices();
u16* pNextIndex = pFirstIndex;
#endif
vec3_c delta = lightDir * lightInfinity;
//if(rf_ssv_algorithm.getInt() == 0) {
// for(u32 i = 0; i < oIndices.getNumIndices(); i+=3){
// u32 i0 = oIndices[i+0];
// u32 i1 = oIndices[i+1];
// u32 i2 = oIndices[i+2];
// const vec3_c &v0 = oVerts[i0].xyz;
// const vec3_c &v1 = oVerts[i1].xyz;
// const vec3_c &v2 = oVerts[i2].xyz;
// addTriangle(v0,v1,v2,light);
// }
//} else
{
//bool bMeshFullyInsideLight;
//if(bounds) {
// bMeshFullyInsideLight = IsAABBInsideSphere(*bounds,light,lightRadius);
//} else {
// bMeshFullyInsideLight = false;
//}
// do the same thing as above, but a little faster way
static arraySTD_c<byte> bPointTransformed;
if ( bPointTransformed.size() < oVerts.size() )
{
bPointTransformed.resize( oVerts.size() );
}
bPointTransformed.nullMemory();
static arraySTD_c<vec3_c> pointsTransformed;
if ( pointsTransformed.size() < oVerts.size() )
{
pointsTransformed.resize( oVerts.size() );
}
u32 tri = 0;
for ( u32 i = 0; i < oIndices.getNumIndices(); i += 3, tri++ )
{
u32 vi0 = oIndices[i + 0];
u32 vi1 = oIndices[i + 1];
u32 vi2 = oIndices[i + 2];
const vec3_c& p0 = oVerts[vi0].xyz;
const vec3_c& p1 = oVerts[vi1].xyz;
const vec3_c& p2 = oVerts[vi2].xyz;
// cull triangles that are outside light radius
// This is a good optimisation for very large models intersecting very small lights
//if(rf_ssv_cullTrianglesOutSideLightSpheres.getInt()) {
// // we can't cull that way any triangles if mesh bounds are entirely inside light sphere
// if(bMeshFullyInsideLight == false) {
// if(CU_IntersectSphereTriangle(light,lightRadius,p0,p1,p2) == false) {
// continue;
// }
// }
//}
float d;
if ( extraPlanesArray == 0 )
{
plane_c triPlane;
triPlane.fromThreePoints( p2, p1, p0 );
d = triPlane.norm.dotProduct( lightDir );
}
else
{
d = extraPlanesArray->getArray()[tri].norm.dotProduct( lightDir );
}
if ( d > 0 )
{
continue;
}
vec3_c& p0Projected = pointsTransformed[vi0];
if ( bPointTransformed[vi0] == 0 )
{
bPointTransformed[vi0] = 1;
p0Projected = p0 - delta;
}
vec3_c& p1Projected = pointsTransformed[vi1];
if ( bPointTransformed[vi1] == 0 )
{
bPointTransformed[vi1] = 1;
p1Projected = p1 - delta;
}
vec3_c& p2Projected = pointsTransformed[vi2];
if ( bPointTransformed[vi2] == 0 )
{
bPointTransformed[vi2] = 1;
p2Projected = p2 - delta;
}
u32 i0 = this->registerPoint( p0 );
u32 i1 = this->registerPoint( p1 );
u32 i2 = this->registerPoint( p2 );
u32 pi0 = this->registerPoint( p0Projected );
u32 pi1 = this->registerPoint( p1Projected );
u32 pi2 = this->registerPoint( p2Projected );
#ifdef OPTIMIZE_SLOW_ADDTRIANGLE
ADD_TRIANGLE( pNextIndex, i2, i1, i0 );
ADD_TRIANGLE( pNextIndex, pi0, pi1, pi2 );
ADD_QUAD( pNextIndex, i0, i1, pi0, pi1 );
ADD_QUAD( pNextIndex, i1, i2, pi1, pi2 );
ADD_QUAD( pNextIndex, i2, i0, pi2, pi0 );
#else
indices.addTriangle( i2, i1, i0 );
indices.addTriangle( pi0, pi1, pi2 );
c_capTriPairsAdded++;
indices.addQuad( i0, i1, pi0, pi1 );
c_edgeQuadsAdded++;
indices.addQuad( i1, i2, pi1, pi2 );
c_edgeQuadsAdded++;
indices.addQuad( i2, i0, pi2, pi0 );
c_edgeQuadsAdded++;
#endif
}
}
#ifdef OPTIMIZE_SLOW_ADDTRIANGLE
u32 numAddedIndices = pNextIndex - pFirstIndex;
indices.forceSetIndexCount( indices.getNumIndices() + numAddedIndices );
#endif
}
