unreal models texture format??
Author
Hello.
i''m working on unreal tournament model viewer and i have a little problem,
i read all the info form the model files, and draw it on screen but from some resone i didn''t understand the idea of storing the UV texture coords in a ''char'' variable.
i get some values of U = 178 , V = 56 and so on, my question is:
HOW DO I CONVERT THOSE VALUES TO BE USED IN MY glTexCoord function? (float vars!)
--> Thanks alot <--
A char takes a fourth of the place of a float, that''s why people store texcoords in chars. Conversion is easy, divide by 256.0, that''s it.
U_float = (float)U_char/256.0;
V_float = (float)V_char/256.0;
- JL
U_float = (float)U_char/256.0;
V_float = (float)V_char/256.0;
- JL
Author
well, i tried this ofcourse!, but my texture image size isn''t 256 x 256 it''s
252 x 195. and it''s not looking good at all, any ideas??
--> thanks <--
252 x 195. and it''s not looking good at all, any ideas??
--> thanks <--
Texture coordinates in a 3d file (unreal''s, quakes, whatever) are independent of texture resolution. They just tell you how the mapping plane is applied to the polygons. The 255 in a u/v char doesn''t mean you have to use 256*256 textures, it''s just the maximal range of a char and corresponds to 0.9999... float.
If your texture isn''t square and has a weird aspect ratio, then it''s upon you to adjust texture coordinates to prevent bad distortions.
-JL
If your texture isn''t square and has a weird aspect ratio, then it''s upon you to adjust texture coordinates to prevent bad distortions.
-JL
Author
this is my code:
A = (frame * header.numofVertices) + triangles.iVertex[0];
B = (frame * header.numofVertices) + triangles.iVertex[1];<br>C = (frame * header.numofVertices) + triangles.iVertex[2];<br><br>TexCoord[0][0] = (float)(triangles.mTex[0][0])/255;<br>TexCoord[0][1] = (float)(triangles.mTex[0][1])/255;<br><br>TexCoord[1][0] = (float)(triangles.mTex[1][0])/255;<br>TexCoord[1][1] = (float)(triangles.mTex[1][1])/255;<br><br>TexCoord[2][0] = (float)(triangles.mTex[2][0])/255;<br>TexCoord[2][1] = (float)(triangles.mTex[2][1])/255;<br><br>glTexCoord2d(TexCoord[0][0] , TexCoord[0][1]);<br>glVertex3f(x+(points<A href='http://.x*scale),y+(points[A].y*scale),z+(points[A].z*scale));<br><br>glTexCoord2d(TexCoord[1][0] , TexCoord[1][1]);<br>glVertex3f(x+(points<b>.x*scale),y+(points.y*scale),z+(points.z*scale));<br> <br>glTexCoord2d(TexCoord[2][0] , TexCoord[2][1]);<br>glVertex3f(x+(points[C].x*scale),y+(points[C].y*scale),z+(points[C].z*scale));<br><br>ofcourse with the (glBegin(GL_TRIANGLES) and glEnd)<br>do you see something wrong?? , because i don''t. as you said char is 0 to 255 so i use /255 to get the ratio!. well any help (maybe the syntax!) will be great!!!.<br><br>–> THANKS ALOT <–<br> </b> </i> ' Target=_Blank>Link</a>
A = (frame * header.numofVertices) + triangles.iVertex[0];
B = (frame * header.numofVertices) + triangles.iVertex[1];<br>C = (frame * header.numofVertices) + triangles.iVertex[2];<br><br>TexCoord[0][0] = (float)(triangles.mTex[0][0])/255;<br>TexCoord[0][1] = (float)(triangles.mTex[0][1])/255;<br><br>TexCoord[1][0] = (float)(triangles.mTex[1][0])/255;<br>TexCoord[1][1] = (float)(triangles.mTex[1][1])/255;<br><br>TexCoord[2][0] = (float)(triangles.mTex[2][0])/255;<br>TexCoord[2][1] = (float)(triangles.mTex[2][1])/255;<br><br>glTexCoord2d(TexCoord[0][0] , TexCoord[0][1]);<br>glVertex3f(x+(points<A href='http://.x*scale),y+(points[A].y*scale),z+(points[A].z*scale));<br><br>glTexCoord2d(TexCoord[1][0] , TexCoord[1][1]);<br>glVertex3f(x+(points<b>.x*scale),y+(points.y*scale),z+(points.z*scale));<br> <br>glTexCoord2d(TexCoord[2][0] , TexCoord[2][1]);<br>glVertex3f(x+(points[C].x*scale),y+(points[C].y*scale),z+(points[C].z*scale));<br><br>ofcourse with the (glBegin(GL_TRIANGLES) and glEnd)<br>do you see something wrong?? , because i don''t. as you said char is 0 to 255 so i use /255 to get the ratio!. well any help (maybe the syntax!) will be great!!!.<br><br>–> THANKS ALOT <–<br> </b> </i> ' Target=_Blank>Link</a>
Author
(hey why the code cut away??!) well this is the rest of the code:
glTexCoord2d(TexCoord[0][0] , TexCoord[0][1]);
glVertex3f(x+(points<A href='http://.x*scale),y+(points[A].y*scale),z+(points[A].z*scale));<br>
glTexCoord2d(TexCoord[1][0] , TexCoord[1][1]);
glVertex3f(x+(points.x*scale),y+(points.y*scale),z+(points.z*scale));<br> <br>glTexCoord2d(TexCoord[2][0] , TexCoord[2][1]);<br>glVertex3f(x+(points[C].x*scale),y+(points[C].y*scale),z+(points[C].z*scale));<br> </b> ' Target=_Blank>Link</a>
glTexCoord2d(TexCoord[0][0] , TexCoord[0][1]);
glVertex3f(x+(points<A href='http://.x*scale),y+(points[A].y*scale),z+(points[A].z*scale));<br>
glTexCoord2d(TexCoord[1][0] , TexCoord[1][1]);
glVertex3f(x+(points.x*scale),y+(points.y*scale),z+(points.z*scale));<br> <br>glTexCoord2d(TexCoord[2][0] , TexCoord[2][1]);<br>glVertex3f(x+(points[C].x*scale),y+(points[C].y*scale),z+(points[C].z*scale));<br> </b> ' Target=_Blank>Link</a>
orenk2k : Could you send me some specifications(structure/file reading code/your code?/links..anything would be useful) of UT models.. can your program also open levels? ... could you post some images...
TNX
email : mirko.teran@guest.arnes.si
There are more worlds than the one that you hold in your hand...
TNX
email : mirko.teran@guest.arnes.si
There are more worlds than the one that you hold in your hand...
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