Hello,
I have a problem with the .asc file from 3ds max. I have drawn a 3d object in 3ds max, and had export it to a .asc file. I have written an converter which displays the object in opengl. Now I have a problem with my Texture coordinates, i have no idea how to use the exported ones.
And i have also no idea how to calculate texture coordinates for the Object.
thank you for reply
helda
p.s. i don’t want to use glTexGen
Hi there!
First hit “MESH_NUMTVERTEX” it says how many texture coordinates you have.
Then followed by “MESH_TVERT” keywords (for each texture coordinate) you have 3 values:
id u_coordinate v_coordinate.
After reading them you have “MESH_TFACE”'s (no.faces times) - each followed by 4 values: id and 3 ids of texture coordinates you’ve just read in.
Hope this helps.
are these parameters in the ase format? can i get this information in the .asc format?
helda
I have no experience with .asc at all.
As for .ASEs - these terms should be in exported file. Make sure you enable texture coordinates export in 3dsmax exporter.
do you have any specification of the .ase format, because i can test it with that. (or any code example)
Here’s cut’n’pasted ASE loader, should help, though its has some engine specific structs/macros.
bool Builder_c::ReadASE()
{
int i, j;
int NumFaces, NumVerts, NumTVerts;
int NumObjects;
int Flags, ShaderID;
Vec3_t *TmpVerts;
Vec2_t *TmpTVerts;
Parser_c Parser;if (!Parser.Open(“Base/Data/Maps_in/ASE/%s”, FileName))
{
LOL_WARN(“Couldn’t open map file "%s" in "%s"”, Parser.GetFileName());
return false;
}// Extract name without extension
Name = LOL_ALLOC char[strlen(FileName) - 3];
memcpy(Name, FileName, sizeof(char) * (strlen(FileName) - 4));
Name[strlen(FileName) - 4] = ‘\0’;LOL_PRINT(“$>Building map from "%s" (%.2f kB)…”, FileName, (float) Parser.FileSize() / 1024);
LOL_REFRESH;// Materials
//----------Parser.Next(“*MATERIAL_COUNT”);
LOL_FOR(i = Parser.NextInt(), i > 0, i–)
{
Parser.Next(“*BITMAP”);
ShaderRefs.Alloc();
strcpy(ShaderRefs.Get().Name, Parser.Next());
}// Objects
//--------NumObjects = 0;
NumVerts = 1;
NumTVerts = 1;
TmpVerts = LOL_ALLOC Vec3_t[NumVerts];
TmpTVerts = LOL_ALLOC Vec2_t[NumTVerts];while (!Parser.EOFile())
{
LOL_REFRESH;
if (!Parser.Next2(“*GEOMOBJECT”, “*LIGHTOBJECT”))
{
break;
}// Light object //------------- if (!stricmp("*LIGHTOBJECT", Parser.Curr())) { Lights.Alloc(); // Default Flags Lights.Get().Flags = LIGHT_SHADOWS | LIGHT_CORONA; // Position Parser.Next("*TM_POS"); Lights.Get().Origin[0] = -Parser.NextFloat(); Lights.Get().Origin[2] = Parser.NextFloat(); Lights.Get().Origin[1] = Parser.NextFloat(); // Color (Alpha == 1 by default) Parser.Next("*LIGHT_COLOR"); Lights.Get().Color[0] = Parser.NextFloat(); Lights.Get().Color[1] = Parser.NextFloat(); Lights.Get().Color[2] = Parser.NextFloat(); Lights.Get().Color[3] = 1.0f; continue; } // Geometric object //----------------- NumObjects++; // Face Flags Parser.Next("*NODE_NAME"); if (stristr(Parser.Next(), "INVISIBLE")) { Flags = FACE_INVISIBLE | FACE_SEETHROUGH | FACE_NOTSOLID; } else if (stristr(Parser.Next(), "SEETHROUGH")) { Flags = FACE_SEETHROUGH | FACE_NOTSOLID; } else { Flags = 0; } Parser.Next("*MESH_NUMVERTEX"); i = Parser.NextInt(); Parser.Next("*MESH_NUMFACES"); NumFaces = Parser.NextInt(); // Verts if (i > NumVerts) { NumVerts = i; LOL_FREE1D( TmpVerts ); TmpVerts = LOL_ALLOC Vec3_t[NumVerts]; } else { NumVerts = i; } LOL_FOR(i = 0, i < NumVerts, i++) { Parser.Next("*MESH_VERTEX"); Parser.Next(); // Skip int // Exchange Y with Z, negate X TmpVerts[i][0] = -Parser.NextFloat(); TmpVerts[i][2] = Parser.NextFloat(); TmpVerts[i][1] = Parser.NextFloat(); } // Verts to Faces associations LOL_FOR(i = 0, i < NumFaces, i++) { Parser.Next("*MESH_FACE"); Parser.Next(); // Skip "int:" Parser.Next(); // Skip "A:" Faces.Alloc(); Faces.Get().FirstVert = Verts.GetNum(); Faces.Get().NumVerts = 3; // Inverse order to clockwise j = Verts.Alloc(); Verts.Alloc(); Verts.Alloc(); Verts.Get(j).Pos = TmpVerts[ Parser.NextInt() ]; Parser.Next(); // Skip "B:" Verts.Get(j + 2).Pos = TmpVerts[ Parser.NextInt() ]; Parser.Next(); // Skip "C:" Verts.Get(j + 1).Pos = TmpVerts[ Parser.NextInt() ]; // Set to NULL for Kill() reasons Faces.Get().EdgesID = NULL; } if (!(Flags & FACE_INVISIBLE)) { // Texture coords Parser.Next("*MESH_NUMTVERTEX"); i = Parser.NextInt(); if (i > NumTVerts) { NumTVerts = i; LOL_FREE1D( TmpTVerts ); TmpTVerts = LOL_ALLOC Vec2_t[NumTVerts]; } else { NumTVerts = i; } LOL_FOR(i = 0, i < NumTVerts, i++) { Parser.Next("*MESH_TVERT"); Parser.Next(); // Skip int TmpTVerts[i][0] = Parser.NextFloat(); TmpTVerts[i][1] = Parser.NextFloat(); } // Texture coords to faces associations j = Faces.GetNum() - NumFaces; LOL_FOR(i = 0, i < NumFaces, (i++, j++)) { Parser.Next("*MESH_TFACE"); Parser.Next(); // Skip int // Inverse order to clockwise Verts.Get( Faces.Get(j).FirstVert ).Tex0 = TmpTVerts[ Parser.NextInt() ]; Verts.Get( Faces.Get(j).FirstVert + 2 ).Tex0 = TmpTVerts[ Parser.NextInt() ]; Verts.Get( Faces.Get(j).FirstVert + 1 ).Tex0 = TmpTVerts[ Parser.NextInt() ]; } } // Material reference Parser.Next("*MATERIAL_REF"); ShaderID = Parser.NextInt(); // Assign common features for Faces j = Faces.GetNum() - NumFaces; LOL_FOR(i = 0, i < NumFaces, (i++, j++)) { Faces.Get(j).Flags = Flags; Faces.Get(j).ShaderID = ShaderID; }}
LOL_FREE1D( TmpVerts );
LOL_FREE1D( TmpTVerts );LOL_PRINT(“ASE File "%s" read [%d msec]”, FileName, Clock->TestTime());
LOL_PRINT(" - Verts %d", Verts.GetNum());
LOL_PRINT(" - Faces %d", Faces.GetNum());
LOL_PRINT(" - Shaders %d", ShaderRefs.GetNum());
LOL_PRINT(" - Lights %d", Lights.GetNum());
LOL_PRINT(" - Geometric objects %d", NumObjects);
LOL_REFRESH;return true;
}