void Winding::getBounds(BoundingBox& bounds) const
{
bounds.reset();
unsigned x;
for (x=0; x<m_NumPoints; x++)
{
bounds.add(m_Points[x]);
}
}
void Winding::getBounds(vec3_t& mins, vec3_t& maxs) const
{
BoundingBox bounds;
unsigned x;
for (x=0; x<m_NumPoints; x++)
{
bounds.add(m_Points[x]);
}
VectorCopy(bounds.m_Mins, mins);
VectorCopy(bounds.m_Maxs, maxs);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
BoundingBox Scene::boundingBox() const
{
BoundingBox bb;
size_t numModels = m_models.size();
size_t i;
for (i = 0; i < numModels; i++)
{
const Model* model = m_models.at(i);
CVF_ASSERT(model);
bb.add(model->boundingBox());
}
return bb;
}
//--------------------------------------------------------------------------------------------------
/// Transform the min and max coordinate with the given transformation matrix
//--------------------------------------------------------------------------------------------------
void BoundingBox::transform(const Mat4d& matrix)
{
// Check if box is invalid, and don't transform if so
if (!isValid()) return;
BoundingBox newBox;
newBox.reset();
Vec3d node;
node.set(m_min.x(), m_min.y(), m_min.z());
node.transformPoint(matrix);
newBox.add(node);
node.set(m_max.x(), m_min.y(), m_min.z());
node.transformPoint(matrix);
newBox.add(node);
node.set(m_max.x(), m_max.y(), m_min.z());
node.transformPoint(matrix);
newBox.add(node);
node.set(m_min.x(), m_max.y(), m_min.z());
node.transformPoint(matrix);
newBox.add(node);
node.set(m_min.x(), m_min.y(), m_max.z());
node.transformPoint(matrix);
newBox.add(node);
node.set(m_max.x(), m_min.y(), m_max.z());
node.transformPoint(matrix);
newBox.add(node);
node.set(m_max.x(), m_max.y(), m_max.z());
node.transformPoint(matrix);
newBox.add(node);
node.set(m_min.x(), m_max.y(), m_max.z());
node.transformPoint(matrix);
newBox.add(node);
*this = newBox;
}
Sphere::Sphere( bool fullSphere, byte numSubDiv, float dim )
{
setPrimitiveType( PrimitiveType::Triangles );
VertexData position;
buildGeometry( fullSphere, numSubDiv, position, dim );
// Build Texture Coordinates.
BoundingBox box;
for( size_t i = 0; i < position.size(); i++ )
{
const Vector3& v = position[i];
box.add(v);
}
Vector3 center = box.getCenter();
std::vector<Vector3> texCoords;
for( size_t i = 0; i < position.size(); i++ )
{
const Vector3& vert = position[i];
Vector3 d = vert-center;
d.normalize();
// Conveert to spherical coordinates.
//float t = d.z / sqrt(d.x*d.x+d.y*d.y+d.z*d.z);
//float delta = acos(t);
//float phi = atan2(d.y, d.x);
//float u = delta / Math::PI;
//float v = phi / 2*Math::PI;
float u = std::asin(d.x) / PI + 0.5f;
float v = std::asin(d.y) / PI + 0.5f;
texCoords.push_back( Vector2(u, v) );
}
gb->set( VertexAttribute::Position, position );
gb->set( VertexAttribute::TexCoord0, texCoords );
}
