| 92 | |
| 93 | template<class T> |
| 94 | T CurvesPrimitiveEvaluator::Result::primVar( const PrimitiveVariable &primVar, const float *coefficients ) const |
| 95 | { |
| 96 | switch( primVar.interpolation ) |
| 97 | { |
| 98 | case PrimitiveVariable::Constant : |
| 99 | { |
| 100 | const TypedData<T> *d = static_cast<TypedData<T> *>( primVar.data.get() ); |
| 101 | return d->readable(); |
| 102 | } |
| 103 | break; |
| 104 | case PrimitiveVariable::Uniform : |
| 105 | { |
| 106 | const vector<T> &d = static_cast<TypedData<vector<T> > *>( primVar.data.get() )->readable(); |
| 107 | return d[m_curveIndex]; |
| 108 | } |
| 109 | case PrimitiveVariable::Vertex : |
| 110 | { |
| 111 | const vector<T> &d = static_cast<TypedData<vector<T> > *>( primVar.data.get() )->readable(); |
| 112 | |
| 113 | if ( m_linear ) |
| 114 | { |
| 115 | return (T)( coefficients[0] * d[m_vertexDataIndices[0]] + |
| 116 | coefficients[1] * d[m_vertexDataIndices[1]] ); |
| 117 | } |
| 118 | else |
| 119 | { |
| 120 | return (T)( coefficients[0] * d[m_vertexDataIndices[0]] + |
| 121 | coefficients[1] * d[m_vertexDataIndices[1]] + |
| 122 | coefficients[2] * d[m_vertexDataIndices[2]] + |
| 123 | coefficients[3] * d[m_vertexDataIndices[3]] ); |
| 124 | } |
| 125 | } |
| 126 | case PrimitiveVariable::Varying : |
| 127 | case PrimitiveVariable::FaceVarying : |
| 128 | { |
| 129 | const vector<T> &d = static_cast<TypedData<vector<T> > *>( primVar.data.get() )->readable(); |
| 130 | return lerp( d[m_varyingDataIndices[0]], d[m_varyingDataIndices[1]], m_segmentV ); |
| 131 | } |
| 132 | default : |
| 133 | throw InvalidArgumentException( "PrimitiveVariable has invalid interpolation" ); |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | Imath::V3f CurvesPrimitiveEvaluator::Result::point() const |
| 138 | { |