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Model bounding box and sphere computation.

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git-svn-id: https://svn.eduke32.com/eduke32@1237 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
plagman 2009-03-10 09:26:25 +00:00
parent 4daa93c453
commit dec9c2cbac
2 changed files with 126 additions and 3 deletions
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100
polymer/eduke32/build/src/mdsprite.c
View file

@ -1534,6 +1534,98 @@ static md3model_t *md3load(int32_t fil)
return(m);
}
static void md3postload(md3model_t* m)
{
int framei, surfi, verti;
md3xyzn_t *frameverts;
float dist;
// apparently we can't trust loaded models bounding box/sphere information,
// so let's compute it ourselves
framei = 0;
while (framei < m->head.numframes)
{
m->head.frames[framei].min.x = 0.0f;
m->head.frames[framei].min.y = 0.0f;
m->head.frames[framei].min.z = 0.0f;
m->head.frames[framei].max.x = 0.0f;
m->head.frames[framei].max.y = 0.0f;
m->head.frames[framei].max.z = 0.0f;
m->head.frames[framei].r = 0.0f;
surfi = 0;
while (surfi < m->head.numsurfs)
{
frameverts = &m->head.surfs[surfi].xyzn[framei * m->head.surfs[surfi].numverts];
verti = 0;
while (verti < m->head.surfs[surfi].numverts)
{
if (!verti && !surfi)
{
m->head.frames[framei].min.x = frameverts[verti].x;
m->head.frames[framei].min.y = frameverts[verti].y;
m->head.frames[framei].min.z = frameverts[verti].z;
m->head.frames[framei].max.x = frameverts[verti].x;
m->head.frames[framei].max.y = frameverts[verti].y;
m->head.frames[framei].max.z = frameverts[verti].z;
} else {
if (m->head.frames[framei].min.x > frameverts[verti].x)
m->head.frames[framei].min.x = frameverts[verti].x;
if (m->head.frames[framei].max.x < frameverts[verti].x)
m->head.frames[framei].max.x = frameverts[verti].x;
if (m->head.frames[framei].min.y > frameverts[verti].y)
m->head.frames[framei].min.y = frameverts[verti].y;
if (m->head.frames[framei].max.y < frameverts[verti].y)
m->head.frames[framei].max.y = frameverts[verti].y;
if (m->head.frames[framei].min.z > frameverts[verti].z)
m->head.frames[framei].min.z = frameverts[verti].z;
if (m->head.frames[framei].max.z < frameverts[verti].z)
m->head.frames[framei].max.z = frameverts[verti].z;
}
verti++;
}
surfi++;
}
m->head.frames[framei].cen.x = (m->head.frames[framei].min.x + m->head.frames[framei].max.x) / 2.0f;
m->head.frames[framei].cen.y = (m->head.frames[framei].min.y + m->head.frames[framei].max.y) / 2.0f;
m->head.frames[framei].cen.z = (m->head.frames[framei].min.z + m->head.frames[framei].max.z) / 2.0f;
surfi = 0;
while (surfi < m->head.numsurfs)
{
frameverts = &m->head.surfs[surfi].xyzn[framei * m->head.surfs[surfi].numverts];
verti = 0;
while (verti < m->head.surfs[surfi].numverts)
{
dist = m->head.frames[framei].cen.x * frameverts[verti].x +
m->head.frames[framei].cen.y * frameverts[verti].y +
m->head.frames[framei].cen.z * frameverts[verti].z;
if (dist > m->head.frames[framei].r)
m->head.frames[framei].r = dist;
verti++;
}
surfi++;
}
m->head.frames[framei].r = sqrt(m->head.frames[framei].r);
framei++;
}
}
static int32_t md3draw(md3model_t *m, spritetype *tspr)
{
point3d fp, fp1, fp2, m0, m1, a0;
@ -2950,9 +3042,13 @@ mdmodel_t *mdload(const char *filnam)
{
case 0x32504449:
// initprintf("Warning: model '%s' is version IDP2; wanted version IDP3\n",filnam);
vm = (mdmodel_t*)md2load(fil,filnam); break; //IDP2
vm = (mdmodel_t*)md2load(fil,filnam);
md3postload((md3model_t*)vm);
break; //IDP2
case 0x33504449:
vm = (mdmodel_t*)md3load(fil); break; //IDP3
vm = (mdmodel_t*)md3load(fil);
md3postload((md3model_t*)vm);
break; //IDP3
default:
vm = (mdmodel_t*)0; break;
}

29
polymer/eduke32/build/src/polymer.c
View file

@ -273,7 +273,7 @@ _prprogrambit prprogrambits[PR_BIT_COUNT] = {
" }\n"
" result += diffuseTexel * vec4(lightAttenuation * dotNormalLightDir * lightDiffuse, 0.0);\n"
" float specular = pow( max(dot(reflect(-normalize(lightVector), fragmentNormal), normalize(-vertexPos)), 0.0), 60.0);\n"
" result += vec4(lightAttenuation * specular * vec3(1.0, 1.0, 1.0), 0.0);\n"
" result += diffuseTexel * vec4(lightAttenuation * specular * lightDiffuse * 10, 0.0);\n"
" }\n"
"\n"
" l++;\n"
@ -2484,6 +2484,33 @@ static void polymer_drawmdsprite(spritetype *tspr)
bglScalef(scale * tspr->xrepeat, scale * tspr->xrepeat, scale * tspr->yrepeat);
bglTranslatef(0.0f, 0.0, m->zadd * 64);
// debug code for drawing the model bounding sphere
// bglDisable(GL_TEXTURE_2D);
// bglBegin(GL_LINES);
// bglColor4f(1.0, 0.0, 0.0, 1.0);
// bglVertex3f(m->head.frames[m->cframe].cen.x,
// m->head.frames[m->cframe].cen.y,
// m->head.frames[m->cframe].cen.z);
// bglVertex3f(m->head.frames[m->cframe].cen.x + m->head.frames[m->cframe].r,
// m->head.frames[m->cframe].cen.y,
// m->head.frames[m->cframe].cen.z);
// bglColor4f(0.0, 1.0, 0.0, 1.0);
// bglVertex3f(m->head.frames[m->cframe].cen.x,
// m->head.frames[m->cframe].cen.y,
// m->head.frames[m->cframe].cen.z);
// bglVertex3f(m->head.frames[m->cframe].cen.x,
// m->head.frames[m->cframe].cen.y + m->head.frames[m->cframe].r,
// m->head.frames[m->cframe].cen.z);
// bglColor4f(0.0, 0.0, 1.0, 1.0);
// bglVertex3f(m->head.frames[m->cframe].cen.x,
// m->head.frames[m->cframe].cen.y,
// m->head.frames[m->cframe].cen.z);
// bglVertex3f(m->head.frames[m->cframe].cen.x,
// m->head.frames[m->cframe].cen.y,
// m->head.frames[m->cframe].cen.z + m->head.frames[m->cframe].r);
// bglEnd();
// bglEnable(GL_TEXTURE_2D);
polymer_getscratchmaterial(&mdspritematerial);
color = mdspritematerial.diffusemodulation;