120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
|
// This code is in the public domain -- castanyo@yahoo.es
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
#ifndef NV_MESH_MESHBUILDER_H
|
||
|
|
#define NV_MESH_MESHBUILDER_H
|
||
|
|
|
||
|
|
#include "nvmesh.h"
|
||
|
|
#include "nvcore/Array.h"
|
||
|
|
#include "nvmath/Vector.h"
|
||
|
|
|
||
|
|
namespace nv
|
||
|
|
{
|
||
|
|
class String;
|
||
|
|
class TriMesh;
|
||
|
|
class QuadTriMesh;
|
||
|
|
namespace HalfEdge { class Mesh; }
|
||
|
|
|
||
|
|
|
||
|
|
/// Mesh builder is a helper class for importers.
|
||
|
|
/// Ideally it should handle any vertex data, but for now it only accepts positions,
|
||
|
|
/// normals and texcoords.
|
||
|
|
class MeshBuilder
|
||
|
|
{
|
||
|
|
NV_FORBID_COPY(MeshBuilder);
|
||
|
|
NV_FORBID_HEAPALLOC();
|
||
|
|
public:
|
||
|
|
MeshBuilder();
|
||
|
|
~MeshBuilder();
|
||
|
|
|
||
|
|
// Builder methods.
|
||
|
|
uint addPosition(const Vector3 & v);
|
||
|
|
uint addNormal(const Vector3 & v);
|
||
|
|
uint addTexCoord(const Vector2 & v, uint set = 0);
|
||
|
|
uint addColor(const Vector4 & v, uint set = 0);
|
||
|
|
|
||
|
|
void beginGroup(uint id);
|
||
|
|
void endGroup();
|
||
|
|
|
||
|
|
uint addMaterial(const char * name);
|
||
|
|
void beginMaterial(uint id);
|
||
|
|
void endMaterial();
|
||
|
|
|
||
|
|
void beginPolygon(uint id = 0);
|
||
|
|
uint addVertex(uint p, uint n = NIL, uint t0 = NIL, uint t1 = NIL, uint c0 = NIL, uint c1 = NIL, uint c2 = NIL);
|
||
|
|
uint addVertex(const Vector3 & p);
|
||
|
|
//uint addVertex(const Vector3 & p, const Vector3 & n, const Vector2 & t0 = Vector2(0), const Vector2 & t1 = Vector2(0), const Vector4 & c0 = Vector4(0), const Vector4 & c1 = Vector4(0));
|
||
|
|
bool endPolygon();
|
||
|
|
|
||
|
|
uint weldPositions();
|
||
|
|
uint weldNormals();
|
||
|
|
uint weldTexCoords(uint set = 0);
|
||
|
|
uint weldColors(uint set = 0);
|
||
|
|
void weldVertices();
|
||
|
|
|
||
|
|
void optimize(); // eliminate duplicate components and duplicate vertices.
|
||
|
|
void removeUnusedMaterials(Array<uint> & newMaterialId);
|
||
|
|
void sortFacesByGroup();
|
||
|
|
void sortFacesByMaterial();
|
||
|
|
|
||
|
|
void done();
|
||
|
|
void reset();
|
||
|
|
|
||
|
|
// Hints.
|
||
|
|
void hintTriangleCount(uint count);
|
||
|
|
void hintVertexCount(uint count);
|
||
|
|
void hintPositionCount(uint count);
|
||
|
|
void hintNormalCount(uint count);
|
||
|
|
void hintTexCoordCount(uint count, uint set = 0);
|
||
|
|
void hintColorCount(uint count, uint set = 0);
|
||
|
|
|
||
|
|
// Helpers.
|
||
|
|
void addTriangle(uint v0, uint v1, uint v2);
|
||
|
|
void addQuad(uint v0, uint v1, uint v2, uint v3);
|
||
|
|
|
||
|
|
// Get result.
|
||
|
|
TriMesh * buildTriMesh() const;
|
||
|
|
QuadTriMesh * buildQuadTriMesh() const;
|
||
|
|
|
||
|
|
enum Error {
|
||
|
|
Error_None,
|
||
|
|
Error_NonManifoldEdge,
|
||
|
|
Error_NonManifoldVertex,
|
||
|
|
};
|
||
|
|
|
||
|
|
HalfEdge::Mesh * buildHalfEdgeMesh(bool weldPositions, Error * error = NULL, Array<uint> * badFaces = NULL) const;
|
||
|
|
|
||
|
|
bool buildPositions(Array<Vector3> & positionArray);
|
||
|
|
bool buildNormals(Array<Vector3> & normalArray);
|
||
|
|
bool buildTexCoords(Array<Vector2> & texCoordArray, uint set = 0);
|
||
|
|
bool buildColors(Array<Vector4> & colorArray, uint set = 0);
|
||
|
|
void buildVertexToPositionMap(Array<int> & map);
|
||
|
|
|
||
|
|
|
||
|
|
// Expose attribute indices of the unified vertex array.
|
||
|
|
uint vertexCount() const;
|
||
|
|
|
||
|
|
uint positionCount() const;
|
||
|
|
uint normalCount() const;
|
||
|
|
uint texCoordCount(uint set = 0) const;
|
||
|
|
uint colorCount(uint set = 0) const;
|
||
|
|
|
||
|
|
uint materialCount() const;
|
||
|
|
const char * material(uint i) const;
|
||
|
|
|
||
|
|
uint positionIndex(uint vertex) const;
|
||
|
|
uint normalIndex(uint vertex) const;
|
||
|
|
uint texCoordIndex(uint vertex, uint set = 0) const;
|
||
|
|
uint colorIndex(uint vertex, uint set = 0) const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
struct PrivateData;
|
||
|
|
PrivateData * d;
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
} // nv namespace
|
||
|
|
|
||
|
|
#endif // NV_MESH_MESHBUILDER_H
|