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REVIEWED: ExportMesh() #2220

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raysan5 2021-12-17 20:55:38 +01:00
parent 87fa23beee
commit ef5be632fe
2 changed files with 90 additions and 69 deletions
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41
src/rmodels.c
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@ -1649,13 +1649,13 @@ bool ExportMesh(Mesh mesh, const char *fileName)
if (IsFileExtension(fileName, ".obj"))
{
// Estimated data size, it should be enough...
int dataSize = mesh.vertexCount/3*(int)strlen("v 0000.00f 0000.00f 0000.00f") +
mesh.vertexCount/2*(int)strlen("vt 0.000f 0.00f") +
mesh.vertexCount/3*(int)strlen("vn 0.000f 0.00f 0.00f") +
mesh.triangleCount/3*(int)strlen("f 00000/00000/00000 00000/00000/00000 00000/00000/00000");
int dataSize = mesh.vertexCount*(int)strlen("v 0000.00f 0000.00f 0000.00f") +
mesh.vertexCount*(int)strlen("vt 0.000f 0.00f") +
mesh.vertexCount*(int)strlen("vn 0.000f 0.00f 0.00f") +
mesh.triangleCount*(int)strlen("f 00000/00000/00000 00000/00000/00000 00000/00000/00000");
// NOTE: Text data buffer size is estimated considering mesh data size
char *txtData = (char *)RL_CALLOC(dataSize + 2000, sizeof(char));
char *txtData = (char *)RL_CALLOC(dataSize*2 + 2000, sizeof(char));
int byteCount = 0;
byteCount += sprintf(txtData + byteCount, "# //////////////////////////////////////////////////////////////////////////////////\n");
@ -1665,7 +1665,7 @@ bool ExportMesh(Mesh mesh, const char *fileName)
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) 2018 Ramon Santamaria (@raysan5) //\n");
byteCount += sprintf(txtData + byteCount, "# // Copyright (c) 2018-2021 Ramon Santamaria (@raysan5) //\n");
byteCount += sprintf(txtData + byteCount, "# // //\n");
byteCount += sprintf(txtData + byteCount, "# //////////////////////////////////////////////////////////////////////////////////\n\n");
byteCount += sprintf(txtData + byteCount, "# Vertex Count: %i\n", mesh.vertexCount);
@ -1688,9 +1688,22 @@ bool ExportMesh(Mesh mesh, const char *fileName)
byteCount += sprintf(txtData + byteCount, "vn %.3f %.3f %.3f\n", mesh.normals[v], mesh.normals[v + 1], mesh.normals[v + 2]);
}
for (int i = 0; i < mesh.triangleCount; i++)
if (mesh.indices != NULL)
{
byteCount += sprintf(txtData + byteCount, "f %i/%i/%i %i/%i/%i %i/%i/%i\n", i, i, i, i + 1, i + 1, i + 1, i + 2, i + 2, i + 2);
for (int i = 0, v = 0; i < mesh.triangleCount; i++, v += 3)
{
byteCount += sprintf(txtData + byteCount, "f %i/%i/%i %i/%i/%i %i/%i/%i\n",
mesh.indices[v] + 1, mesh.indices[v] + 1, mesh.indices[v] + 1,
mesh.indices[v + 1] + 1, mesh.indices[v + 1] + 1, mesh.indices[v + 1] + 1,
mesh.indices[v + 2] + 1, mesh.indices[v + 2] + 1, mesh.indices[v + 2] + 1);
}
}
else
{
for (int i = 0, v = 1; i < mesh.triangleCount; i++, v += 3)
{
byteCount += sprintf(txtData + byteCount, "f %i/%i/%i %i/%i/%i %i/%i/%i\n", v, v, v, v + 1, v + 1, v + 1, v + 2, v + 2, v + 2);
}
}
byteCount += sprintf(txtData + byteCount, "\n");
@ -2252,14 +2265,14 @@ Mesh GenMeshCube(float width, float height, float length)
int k = 0;
// Indices can be initialized right now
for (int i = 0; i < 36; i+=6)
for (int i = 0; i < 36; i += 6)
{
mesh.indices[i] = 4*k;
mesh.indices[i+1] = 4*k+1;
mesh.indices[i+2] = 4*k+2;
mesh.indices[i+3] = 4*k;
mesh.indices[i+4] = 4*k+2;
mesh.indices[i+5] = 4*k+3;
mesh.indices[i + 1] = 4*k + 1;
mesh.indices[i + 2] = 4*k + 2;
mesh.indices[i + 3] = 4*k;
mesh.indices[i + 4] = 4*k + 2;
mesh.indices[i + 5] = 4*k + 3;
k++;
}