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ADDED: ExportMeshAsCode()
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@raysan5
raysan5 committed Nov 30, 2023
1 parent e84099b commit 6b136fa
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Showing 2 changed files with 100 additions and 1 deletion.
3 changes: 2 additions & 1 deletion src/raylib.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1536,9 +1536,10 @@ RLAPI void UpdateMeshBuffer(Mesh mesh, int index, const void *data, int dataSize
RLAPI void UnloadMesh(Mesh mesh); // Unload mesh data from CPU and GPU
RLAPI void DrawMesh(Mesh mesh, Material material, Matrix transform); // Draw a 3d mesh with material and transform
RLAPI void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, int instances); // Draw multiple mesh instances with material and different transforms
RLAPI bool ExportMesh(Mesh mesh, const char *fileName); // Export mesh data to file, returns true on success
RLAPI BoundingBox GetMeshBoundingBox(Mesh mesh); // Compute mesh bounding box limits
RLAPI void GenMeshTangents(Mesh *mesh); // Compute mesh tangents
RLAPI bool ExportMesh(Mesh mesh, const char *fileName); // Export mesh data to file, returns true on success
RLAPI bool ExportMeshAsCode(Mesh mesh, const char *fileName); // Export mesh as code file (.h) defining multiple arrays of vertex attributes

// Mesh generation functions
RLAPI Mesh GenMeshPoly(int sides, float radius); // Generate polygonal mesh
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98 changes: 98 additions & 0 deletions src/rmodels.c
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Expand Up @@ -1850,6 +1850,104 @@ bool ExportMesh(Mesh mesh, const char *fileName)
return success;
}

// Export mesh as code file (.h) defining multiple arrays of vertex attributes
bool ExportMeshAsCode(Mesh mesh, const char *fileName)
{
bool success = false;

#ifndef TEXT_BYTES_PER_LINE
#define TEXT_BYTES_PER_LINE 20
#endif

// NOTE: Text data buffer size is fixed to 64MB
char *txtData = (char *)RL_CALLOC(64*1024*1024, sizeof(char)); // 64 MB

int byteCount = 0;
byteCount += sprintf(txtData + byteCount, "////////////////////////////////////////////////////////////////////////////////////////\n");
byteCount += sprintf(txtData + byteCount, "// //\n");
byteCount += sprintf(txtData + byteCount, "// MeshAsCode exporter v1.0 - Mesh vertex data exported as arrays //\n");
byteCount += sprintf(txtData + byteCount, "// //\n");
byteCount += sprintf(txtData + byteCount, "// more info and bugs-report: github.com/raysan5/raylib //\n");
byteCount += sprintf(txtData + byteCount, "// feedback and support: ray[at]raylib.com //\n");
byteCount += sprintf(txtData + byteCount, "// //\n");
byteCount += sprintf(txtData + byteCount, "// Copyright (c) 2023 Ramon Santamaria (@raysan5) //\n");
byteCount += sprintf(txtData + byteCount, "// //\n");
byteCount += sprintf(txtData + byteCount, "////////////////////////////////////////////////////////////////////////////////////////\n\n");

// Get file name from path and convert variable name to uppercase
char varFileName[256] = { 0 };
strcpy(varFileName, GetFileNameWithoutExt(fileName));
for (int i = 0; varFileName[i] != '\0'; i++) if ((varFileName[i] >= 'a') && (varFileName[i] <= 'z')) { varFileName[i] = varFileName[i] - 32; }

// Add image information
byteCount += sprintf(txtData + byteCount, "// Mesh basic information\n");
byteCount += sprintf(txtData + byteCount, "#define %s_VERTEX_COUNT %i\n", varFileName, mesh.vertexCount);
byteCount += sprintf(txtData + byteCount, "#define %s_TRIANGLE_COUNT %i\n\n", varFileName, mesh.triangleCount);

// Define vertex attributes data as separate arrays
//-----------------------------------------------------------------------------------------
if (mesh.vertices != NULL) // Vertex position (XYZ - 3 components per vertex - float)
{
byteCount += sprintf(txtData + byteCount, "static float %s_VERTEX_DATA[%i] = { ", varFileName, mesh.vertexCount*3);
for (int i = 0; i < mesh.vertexCount*3 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.vertices[i]);
byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.vertices[mesh.vertexCount*3 - 1]);
}

if (mesh.texcoords != NULL) // Vertex texture coordinates (UV - 2 components per vertex - float)
{
byteCount += sprintf(txtData + byteCount, "static float %s_TEXCOORD_DATA[%i] = { ", varFileName, mesh.vertexCount*2);
for (int i = 0; i < mesh.vertexCount*2 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.texcoords[i]);
byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.texcoords[mesh.vertexCount*2 - 1]);
}

if (mesh.texcoords2 != NULL) // Vertex texture coordinates (UV - 2 components per vertex - float)
{
byteCount += sprintf(txtData + byteCount, "static float %s_TEXCOORD2_DATA[%i] = { ", varFileName, mesh.vertexCount*2);
for (int i = 0; i < mesh.vertexCount*2 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.texcoords2[i]);
byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.texcoords2[mesh.vertexCount*2 - 1]);
}

if (mesh.normals != NULL) // Vertex normals (XYZ - 3 components per vertex - float)
{
byteCount += sprintf(txtData + byteCount, "static float %s_NORMAL_DATA[%i] = { ", varFileName, mesh.vertexCount*3);
for (int i = 0; i < mesh.vertexCount*3 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.normals[i]);
byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.normals[mesh.vertexCount*3 - 1]);
}

if (mesh.tangents != NULL) // Vertex tangents (XYZW - 4 components per vertex - float)
{
byteCount += sprintf(txtData + byteCount, "static float %s_TANGENT_DATA[%i] = { ", varFileName, mesh.vertexCount*4);
for (int i = 0; i < mesh.vertexCount*4 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%.3ff,\n" : "%.3ff, "), mesh.tangents[i]);
byteCount += sprintf(txtData + byteCount, "%.3ff };\n\n", mesh.tangents[mesh.vertexCount*4 - 1]);
}

if (mesh.colors != NULL) // Vertex colors (RGBA - 4 components per vertex - unsigned char)
{
byteCount += sprintf(txtData + byteCount, "static unsigned char %s_COLOR_DATA[%i] = { ", varFileName, mesh.vertexCount*4);
for (int i = 0; i < mesh.vertexCount*4 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "0x%x,\n" : "0x%x, "), mesh.colors[i]);
byteCount += sprintf(txtData + byteCount, "0x%x };\n\n", mesh.colors[mesh.vertexCount*4 - 1]);
}

if (mesh.indices != NULL) // Vertex indices (3 index per triangle - unsigned short)
{
byteCount += sprintf(txtData + byteCount, "static unsigned short %s_INDEX_DATA[%i] = { ", varFileName, mesh.triangleCount*3);
for (int i = 0; i < mesh.triangleCount*3 - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "%i,\n" : "%i, "), mesh.indices[i]);
byteCount += sprintf(txtData + byteCount, "%i };\n", mesh.indices[mesh.triangleCount*3 - 1]);
}
//-----------------------------------------------------------------------------------------

// NOTE: Text data size exported is determined by '\0' (NULL) character
success = SaveFileText(fileName, txtData);

RL_FREE(txtData);

//if (success != 0) TRACELOG(LOG_INFO, "FILEIO: [%s] Image as code exported successfully", fileName);
//else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to export image as code", fileName);

return success;
}


#if defined(SUPPORT_FILEFORMAT_OBJ) || defined(SUPPORT_FILEFORMAT_MTL)
// Process obj materials
static void ProcessMaterialsOBJ(Material *materials, tinyobj_material_t *mats, int materialCount)
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