mirror of
https://github.com/leozide/leocad
synced 2024-12-27 21:58:37 +01:00
419 lines
12 KiB
C++
419 lines
12 KiB
C++
#include "lc_global.h"
|
|
#include "lc_mesh.h"
|
|
#include "lc_colors.h"
|
|
#include "lc_texture.h"
|
|
#include "lc_file.h"
|
|
#include "lc_math.h"
|
|
#include "lc_application.h"
|
|
#include "lc_library.h"
|
|
|
|
lcMesh* gPlaceholderMesh;
|
|
|
|
lcMesh::lcMesh()
|
|
{
|
|
for (int LodIdx = 0; LodIdx < LC_NUM_MESH_LODS; LodIdx++)
|
|
{
|
|
mLods[LodIdx].Sections = NULL;
|
|
mLods[LodIdx].NumSections = 0;
|
|
}
|
|
|
|
mNumVertices = 0;
|
|
mNumTexturedVertices = 0;
|
|
mIndexType = 0;
|
|
mVertexData = NULL;
|
|
mVertexDataSize = 0;
|
|
mIndexData = NULL;
|
|
mIndexDataSize = 0;
|
|
mVertexCacheOffset = -1;
|
|
mIndexCacheOffset = -1;
|
|
}
|
|
|
|
lcMesh::~lcMesh()
|
|
{
|
|
free(mVertexData);
|
|
free(mIndexData);
|
|
for (int LodIdx = 0; LodIdx < LC_NUM_MESH_LODS; LodIdx++)
|
|
delete[] mLods[LodIdx].Sections;
|
|
}
|
|
|
|
void lcMesh::Create(lcuint16 NumSections[LC_NUM_MESH_LODS], int NumVertices, int NumTexturedVertices, int NumIndices)
|
|
{
|
|
for (int LodIdx = 0; LodIdx < LC_NUM_MESH_LODS; LodIdx++)
|
|
{
|
|
if (NumSections[LodIdx])
|
|
mLods[LodIdx].Sections = new lcMeshSection[NumSections[LodIdx]];
|
|
mLods[LodIdx].NumSections = NumSections[LodIdx];
|
|
}
|
|
|
|
mNumVertices = NumVertices;
|
|
mNumTexturedVertices = NumTexturedVertices;
|
|
mVertexDataSize = NumVertices * sizeof(lcVertex) + NumTexturedVertices * sizeof(lcVertexTextured);
|
|
mVertexData = malloc(mVertexDataSize);
|
|
|
|
if (NumVertices < 0x10000 && NumTexturedVertices < 0x10000)
|
|
{
|
|
mIndexType = GL_UNSIGNED_SHORT;
|
|
mIndexDataSize = NumIndices * sizeof(GLushort);
|
|
}
|
|
else
|
|
{
|
|
mIndexType = GL_UNSIGNED_INT;
|
|
mIndexDataSize = NumIndices * sizeof(GLuint);
|
|
}
|
|
|
|
mIndexData = malloc(mIndexDataSize);
|
|
}
|
|
|
|
void lcMesh::CreateBox()
|
|
{
|
|
lcuint16 NumSections[LC_NUM_MESH_LODS];
|
|
memset(NumSections, 0, sizeof(NumSections));
|
|
NumSections[LC_MESH_LOD_HIGH] = 2;
|
|
|
|
Create(NumSections, 8, 0, 36 + 24);
|
|
|
|
lcVector3 Min(-10.0f, -10.0f, -24.0f);
|
|
lcVector3 Max(10.0f, 10.0f, 4.0f);
|
|
mRadius = lcLength(Max - Min) / 2.0f;
|
|
mBoundingBox.Min = Min;
|
|
mBoundingBox.Max = Max;
|
|
|
|
lcVertex* Verts = (lcVertex*)mVertexData;
|
|
lcuint16* Indices = (lcuint16*)mIndexData;
|
|
|
|
Verts[0].Position = lcVector3(Min[0], Min[1], Min[2]);
|
|
Verts[1].Position = lcVector3(Min[0], Max[1], Min[2]);
|
|
Verts[2].Position = lcVector3(Max[0], Max[1], Min[2]);
|
|
Verts[3].Position = lcVector3(Max[0], Min[1], Min[2]);
|
|
Verts[4].Position = lcVector3(Min[0], Min[1], Max[2]);
|
|
Verts[5].Position = lcVector3(Min[0], Max[1], Max[2]);
|
|
Verts[6].Position = lcVector3(Max[0], Max[1], Max[2]);
|
|
Verts[7].Position = lcVector3(Max[0], Min[1], Max[2]);
|
|
|
|
lcMeshSection* Section = &mLods[LC_MESH_LOD_HIGH].Sections[0];
|
|
Section->ColorIndex = gDefaultColor;
|
|
Section->IndexOffset = 0;
|
|
Section->NumIndices = 36;
|
|
Section->PrimitiveType = LC_MESH_TRIANGLES;
|
|
Section->Texture = NULL;
|
|
|
|
*Indices++ = 0; *Indices++ = 1; *Indices++ = 2;
|
|
*Indices++ = 0; *Indices++ = 2; *Indices++ = 3;
|
|
|
|
*Indices++ = 7; *Indices++ = 6; *Indices++ = 5;
|
|
*Indices++ = 7; *Indices++ = 5; *Indices++ = 4;
|
|
|
|
*Indices++ = 0; *Indices++ = 1; *Indices++ = 5;
|
|
*Indices++ = 0; *Indices++ = 5; *Indices++ = 4;
|
|
|
|
*Indices++ = 2; *Indices++ = 3; *Indices++ = 7;
|
|
*Indices++ = 2; *Indices++ = 7; *Indices++ = 6;
|
|
|
|
*Indices++ = 0; *Indices++ = 3; *Indices++ = 7;
|
|
*Indices++ = 0; *Indices++ = 7; *Indices++ = 4;
|
|
|
|
*Indices++ = 1; *Indices++ = 2; *Indices++ = 6;
|
|
*Indices++ = 1; *Indices++ = 6; *Indices++ = 5;
|
|
|
|
Section = &mLods[LC_MESH_LOD_HIGH].Sections[1];
|
|
Section->ColorIndex = gEdgeColor;
|
|
Section->IndexOffset = 36 * 2;
|
|
Section->NumIndices = 24;
|
|
Section->PrimitiveType = LC_MESH_LINES;
|
|
Section->Texture = NULL;
|
|
|
|
*Indices++ = 0; *Indices++ = 1; *Indices++ = 1; *Indices++ = 2;
|
|
*Indices++ = 2; *Indices++ = 3; *Indices++ = 3; *Indices++ = 0;
|
|
|
|
*Indices++ = 4; *Indices++ = 5; *Indices++ = 5; *Indices++ = 6;
|
|
*Indices++ = 6; *Indices++ = 7; *Indices++ = 7; *Indices++ = 4;
|
|
|
|
*Indices++ = 0; *Indices++ = 4; *Indices++ = 1; *Indices++ = 5;
|
|
*Indices++ = 2; *Indices++ = 6; *Indices++ = 3; *Indices++ = 7;
|
|
}
|
|
|
|
template<typename IndexType>
|
|
bool lcMesh::MinIntersectDist(const lcVector3& Start, const lcVector3& End, float& MinDistance)
|
|
{
|
|
float Distance;
|
|
if (!lcBoundingBoxRayIntersectDistance(mBoundingBox.Min, mBoundingBox.Max, Start, End, &Distance, NULL) || (Distance >= MinDistance))
|
|
return false;
|
|
|
|
lcVertex* Verts = (lcVertex*)mVertexData;
|
|
bool Hit = false;
|
|
lcVector3 Intersection;
|
|
|
|
for (int SectionIdx = 0; SectionIdx < mLods[LC_MESH_LOD_HIGH].NumSections; SectionIdx++)
|
|
{
|
|
lcMeshSection* Section = &mLods[LC_MESH_LOD_HIGH].Sections[SectionIdx];
|
|
|
|
if (Section->PrimitiveType != LC_MESH_TRIANGLES && Section->PrimitiveType != LC_MESH_TEXTURED_TRIANGLES)
|
|
continue;
|
|
|
|
IndexType* Indices = (IndexType*)mIndexData + Section->IndexOffset / sizeof(IndexType);
|
|
|
|
for (int Idx = 0; Idx < Section->NumIndices; Idx += 3)
|
|
{
|
|
const lcVector3& v1 = Verts[Indices[Idx]].Position;
|
|
const lcVector3& v2 = Verts[Indices[Idx + 1]].Position;
|
|
const lcVector3& v3 = Verts[Indices[Idx + 2]].Position;
|
|
|
|
if (lcLineTriangleMinIntersection(v1, v2, v3, Start, End, &MinDistance, &Intersection))
|
|
Hit = true;
|
|
}
|
|
}
|
|
|
|
return Hit;
|
|
}
|
|
|
|
bool lcMesh::MinIntersectDist(const lcVector3& Start, const lcVector3& End, float& MinDist)
|
|
{
|
|
if (mIndexType == GL_UNSIGNED_SHORT)
|
|
return MinIntersectDist<GLushort>(Start, End, MinDist);
|
|
else
|
|
return MinIntersectDist<GLuint>(Start, End, MinDist);
|
|
}
|
|
|
|
template<typename IndexType>
|
|
bool lcMesh::IntersectsPlanes(const lcVector4 Planes[6])
|
|
{
|
|
lcVertex* Verts = (lcVertex*)mVertexData;
|
|
|
|
for (int SectionIdx = 0; SectionIdx < mLods[LC_MESH_LOD_HIGH].NumSections; SectionIdx++)
|
|
{
|
|
lcMeshSection* Section = &mLods[LC_MESH_LOD_HIGH].Sections[SectionIdx];
|
|
|
|
if (Section->PrimitiveType != LC_MESH_TRIANGLES && Section->PrimitiveType != LC_MESH_TEXTURED_TRIANGLES)
|
|
continue;
|
|
|
|
IndexType* Indices = (IndexType*)mIndexData + Section->IndexOffset / sizeof(IndexType);
|
|
|
|
for (int Idx = 0; Idx < Section->NumIndices; Idx += 3)
|
|
if (lcTriangleIntersectsPlanes(Verts[Indices[Idx]].Position, Verts[Indices[Idx+1]].Position, Verts[Indices[Idx+2]].Position, Planes))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool lcMesh::IntersectsPlanes(const lcVector4 Planes[6])
|
|
{
|
|
if (mIndexType == GL_UNSIGNED_SHORT)
|
|
return IntersectsPlanes<GLushort>(Planes);
|
|
else
|
|
return IntersectsPlanes<GLuint>(Planes);
|
|
}
|
|
|
|
template<typename IndexType>
|
|
void lcMesh::ExportPOVRay(lcFile& File, const char* MeshName, const char** ColorTable)
|
|
{
|
|
char Line[1024];
|
|
|
|
sprintf(Line, "#declare lc_%s = union {\n", MeshName);
|
|
File.WriteLine(Line);
|
|
|
|
lcVertex* Verts = (lcVertex*)mVertexData;
|
|
|
|
for (int SectionIdx = 0; SectionIdx < mLods[LC_MESH_LOD_HIGH].NumSections; SectionIdx++)
|
|
{
|
|
lcMeshSection* Section = &mLods[LC_MESH_LOD_HIGH].Sections[SectionIdx];
|
|
|
|
if (Section->PrimitiveType != LC_MESH_TRIANGLES && Section->PrimitiveType != LC_MESH_TEXTURED_TRIANGLES)
|
|
continue;
|
|
|
|
IndexType* Indices = (IndexType*)mIndexData + Section->IndexOffset / sizeof(IndexType);
|
|
|
|
File.WriteLine(" mesh {\n");
|
|
|
|
for (int Idx = 0; Idx < Section->NumIndices; Idx += 3)
|
|
{
|
|
lcVector3& v1 = Verts[Indices[Idx]].Position;
|
|
lcVector3& v2 = Verts[Indices[Idx + 1]].Position;
|
|
lcVector3& v3 = Verts[Indices[Idx + 2]].Position;
|
|
|
|
sprintf(Line, " triangle { <%.2f, %.2f, %.2f>, <%.2f, %.2f, %.2f>, <%.2f, %.2f, %.2f> }\n", -v1.y / 25.0f, -v1.x / 25.0f, v1.z / 25.0f, -v2.y / 25.0f, -v2.x / 25.0f, v2.z / 25.0f, -v3.y / 25.0f, -v3.x / 25.0f, v3.z / 25.0f);
|
|
File.WriteLine(Line);
|
|
}
|
|
|
|
if (Section->ColorIndex != gDefaultColor)
|
|
{
|
|
sprintf(Line, "material { texture { %s normal { bumps 0.1 scale 2 } } }", ColorTable[Section->ColorIndex]);
|
|
File.WriteLine(Line);
|
|
}
|
|
|
|
File.WriteLine(" }\n");
|
|
}
|
|
}
|
|
|
|
void lcMesh::ExportPOVRay(lcFile& File, const char* MeshName, const char** ColorTable)
|
|
{
|
|
if (mIndexType == GL_UNSIGNED_SHORT)
|
|
ExportPOVRay<GLushort>(File, MeshName, ColorTable);
|
|
else
|
|
ExportPOVRay<GLuint>(File, MeshName, ColorTable);
|
|
}
|
|
|
|
template<typename IndexType>
|
|
void lcMesh::ExportWavefrontIndices(lcFile& File, int DefaultColorIndex, int VertexOffset)
|
|
{
|
|
char Line[1024];
|
|
|
|
for (int SectionIdx = 0; SectionIdx < mLods[LC_MESH_LOD_HIGH].NumSections; SectionIdx++)
|
|
{
|
|
lcMeshSection* Section = &mLods[LC_MESH_LOD_HIGH].Sections[SectionIdx];
|
|
|
|
if (Section->PrimitiveType != LC_MESH_TRIANGLES && Section->PrimitiveType != LC_MESH_TEXTURED_TRIANGLES)
|
|
continue;
|
|
|
|
IndexType* Indices = (IndexType*)mIndexData + Section->IndexOffset / sizeof(IndexType);
|
|
|
|
if (Section->ColorIndex == gDefaultColor)
|
|
sprintf(Line, "usemtl %s\n", gColorList[DefaultColorIndex].SafeName);
|
|
else
|
|
sprintf(Line, "usemtl %s\n", gColorList[Section->ColorIndex].SafeName);
|
|
File.WriteLine(Line);
|
|
|
|
for (int Idx = 0; Idx < Section->NumIndices; Idx += 3)
|
|
{
|
|
long int idx1 = Indices[Idx + 0] + VertexOffset;
|
|
long int idx2 = Indices[Idx + 1] + VertexOffset;
|
|
long int idx3 = Indices[Idx + 2] + VertexOffset;
|
|
|
|
if (idx1 != idx2 && idx1 != idx3 && idx2 != idx3)
|
|
sprintf(Line, "f %ld %ld %ld\n", idx1, idx2, idx3);
|
|
File.WriteLine(Line);
|
|
}
|
|
}
|
|
|
|
File.WriteLine("\n");
|
|
}
|
|
|
|
void lcMesh::ExportWavefrontIndices(lcFile& File, int DefaultColorIndex, int VertexOffset)
|
|
{
|
|
if (mIndexType == GL_UNSIGNED_SHORT)
|
|
ExportWavefrontIndices<GLushort>(File, DefaultColorIndex, VertexOffset);
|
|
else
|
|
ExportWavefrontIndices<GLuint>(File, DefaultColorIndex, VertexOffset);
|
|
}
|
|
|
|
bool lcMesh::FileLoad(lcMemFile& File)
|
|
{
|
|
if (File.ReadU32() != LC_MESH_FILE_ID || File.ReadU32() != LC_MESH_FILE_VERSION)
|
|
return false;
|
|
|
|
mBoundingBox.Min = File.ReadVector3();
|
|
mBoundingBox.Max = File.ReadVector3();
|
|
mRadius = File.ReadFloat();
|
|
|
|
lcuint32 NumVertices, NumTexturedVertices, NumIndices;
|
|
lcuint16 NumLods, NumSections[LC_NUM_MESH_LODS];
|
|
|
|
if (!File.ReadU32(&NumVertices, 1) || !File.ReadU32(&NumTexturedVertices, 1) || !File.ReadU32(&NumIndices, 1))
|
|
return false;
|
|
|
|
if (!File.ReadU16(&NumLods, 1) || NumLods != LC_NUM_MESH_LODS || !File.ReadU16(NumSections, LC_NUM_MESH_LODS))
|
|
return false;
|
|
|
|
Create(NumSections, NumVertices, NumTexturedVertices, NumIndices);
|
|
|
|
for (int LodIdx = 0; LodIdx < LC_NUM_MESH_LODS; LodIdx++)
|
|
{
|
|
for (int SectionIdx = 0; SectionIdx < mLods[LodIdx].NumSections; SectionIdx++)
|
|
{
|
|
lcMeshSection& Section = mLods[LodIdx].Sections[SectionIdx];
|
|
|
|
lcuint32 ColorCode, IndexOffset;
|
|
lcuint16 PrimtiveType, Length;
|
|
|
|
if (!File.ReadU32(&ColorCode, 1) || !File.ReadU32(&IndexOffset, 1) || !File.ReadU32(&NumIndices, 1) || !File.ReadU16(&PrimtiveType, 1))
|
|
return false;
|
|
|
|
Section.ColorIndex = lcGetColorIndex(ColorCode);
|
|
Section.IndexOffset = IndexOffset;
|
|
Section.NumIndices = NumIndices;
|
|
Section.PrimitiveType = (lcMeshPrimitiveType)PrimtiveType;
|
|
|
|
if (!File.ReadU16(&Length, 1))
|
|
return false;
|
|
|
|
if (Length)
|
|
{
|
|
if (Length >= LC_TEXTURE_NAME_LEN)
|
|
return false;
|
|
|
|
char FileName[LC_TEXTURE_NAME_LEN];
|
|
|
|
File.ReadBuffer(FileName, Length);
|
|
FileName[Length] = 0;
|
|
|
|
Section.Texture = lcGetPiecesLibrary()->FindTexture(FileName);
|
|
}
|
|
else
|
|
Section.Texture = NULL;
|
|
}
|
|
}
|
|
|
|
File.ReadBuffer(mVertexData, mNumVertices * sizeof(lcVertex) + mNumTexturedVertices * sizeof(lcVertexTextured));
|
|
if (mIndexType == GL_UNSIGNED_SHORT)
|
|
File.ReadU16((lcuint16*)mIndexData, mIndexDataSize / 2);
|
|
else
|
|
File.ReadU32((lcuint32*)mIndexData, mIndexDataSize / 4);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool lcMesh::FileSave(lcMemFile& File)
|
|
{
|
|
File.WriteU32(LC_MESH_FILE_ID);
|
|
File.WriteU32(LC_MESH_FILE_VERSION);
|
|
|
|
File.WriteVector3(mBoundingBox.Min);
|
|
File.WriteVector3(mBoundingBox.Max);
|
|
File.WriteFloat(mRadius);
|
|
|
|
File.WriteU32(mNumVertices);
|
|
File.WriteU32(mNumTexturedVertices);
|
|
File.WriteU32(mIndexDataSize / (mIndexType == GL_UNSIGNED_SHORT ? 2 : 4));
|
|
|
|
File.WriteU16(LC_NUM_MESH_LODS);
|
|
for (int LodIdx = 0; LodIdx < LC_NUM_MESH_LODS; LodIdx++)
|
|
File.WriteU16(mLods[LodIdx].NumSections);
|
|
|
|
for (int LodIdx = 0; LodIdx < LC_NUM_MESH_LODS; LodIdx++)
|
|
{
|
|
for (int SectionIdx = 0; SectionIdx < mLods[LodIdx].NumSections; SectionIdx++)
|
|
{
|
|
lcMeshSection& Section = mLods[LodIdx].Sections[SectionIdx];
|
|
|
|
File.WriteU32(lcGetColorCode(Section.ColorIndex));
|
|
File.WriteU32(Section.IndexOffset);
|
|
File.WriteU32(Section.NumIndices);
|
|
File.WriteU16(Section.PrimitiveType);
|
|
|
|
if (Section.Texture)
|
|
{
|
|
lcuint16 Length = (lcuint16)strlen(Section.Texture->mName);
|
|
File.WriteU16(Length);
|
|
File.WriteBuffer(Section.Texture->mName, Length);
|
|
}
|
|
else
|
|
File.WriteU16(0);
|
|
}
|
|
}
|
|
|
|
File.WriteBuffer(mVertexData, mNumVertices * sizeof(lcVertex) + mNumTexturedVertices * sizeof(lcVertexTextured));
|
|
if (mIndexType == GL_UNSIGNED_SHORT)
|
|
File.WriteU16((lcuint16*)mIndexData, mIndexDataSize / 2);
|
|
else
|
|
File.WriteU32((lcuint32*)mIndexData, mIndexDataSize / 4);
|
|
|
|
return true;
|
|
}
|
|
|
|
int lcMesh::GetLodIndex(float Distance) const
|
|
{
|
|
if (mLods[LC_MESH_LOD_LOW].NumSections && (Distance - mRadius) > 250.0f)
|
|
return LC_MESH_LOD_LOW;
|
|
else
|
|
return LC_MESH_LOD_HIGH;
|
|
}
|