Class CurveTessellation
Synopsis
#include <Source/Falcor/Scene/Curves/CurveTessellation.h>
class dlldecl CurveTessellation
Description
No description yet.
Structures
| MeshResult | ||
| SweptSphereResult |
Methods
| convertToLinearSweptSphere | Convert cubic B-splines to a couple of linear swept sphere segments. | |
| convertToMesh | Tessellate cubic B-splines to a triangular mesh. |
Source
Lines 33-90 in Source/Falcor/Scene/Curves/CurveTessellation.h.
class dlldecl CurveTessellation
{
public:
// Swept spheres
struct SweptSphereResult
{
uint32_t degree;
std::vector<uint32_t> indices;
std::vector<float3> points;
std::vector<float> radius;
std::vector<float3> tangents;
std::vector<float3> normals;
std::vector<float2> texCrds;
};
/** Convert cubic B-splines to a couple of linear swept sphere segments.
\param[in] strandCount Number of curve strands.
\param[in] vertexCountsPerStrand Number of control points per strand.
\param[in] controlPoints Array of control points.
\param[in] widths Array of curve widths, i.e., diameters of swept spheres.
\param[in] UVs Array of texture coordinates.
\param[in] degree Polynomial degree of strand (linear -- cubic).
\param[in] subdivPerSegment Number of sub-segments within each cubic bspline segment (defined by 4 control points).
\param[in] xform Row-major 4x4 transformation matrix. We apply pre-transformation to curve geometry.
\return Linear swept sphere segments.
*/
static SweptSphereResult convertToLinearSweptSphere(size_t strandCount, const int* vertexCountsPerStrand, const float3* controlPoints, const float* widths, const float2* UVs, uint32_t degree, uint32_t subdivPerSegment, const glm::mat4& xform);
// Tessellated mesh
struct MeshResult
{
std::vector<float3> vertices;
std::vector<float3> normals;
std::vector<float4> tangents;
std::vector<uint32_t> faceVertexCounts;
std::vector<uint32_t> faceVertexIndices;
std::vector<float2> texCrds;
};
/** Tessellate cubic B-splines to a triangular mesh.
\param[in] strandCount Number of curve strands.
\param[in] vertexCountsPerStrand Number of control points per strand.
\param[in] controlPoints Array of control points.
\param[in] widths Array of curve widths, i.e., diameters of swept spheres.
\param[in] UVs Array of texture coordinates.
\param[in] subdivPerSegment Number of sub-segments within each cubic bspline segment (defined by 4 control points).
\param[in] pointCountPerCrossSection Number of points sampled at each cross-section.
\return Tessellated mesh.
*/
static MeshResult convertToMesh(size_t strandCount, const int* vertexCountsPerStrand, const float3* controlPoints, const float* widths, const float2* UVs, uint32_t subdivPerSegment, uint32_t pointCountPerCrossSection);
private:
CurveTessellation() = default;
CurveTessellation(const CurveTessellation&) = delete;
void operator=(const CurveTessellation&) = delete;
};