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#include "video/model.h"
#include "filesystem/path.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "zlib.h"
void loadDefaultMaterial(Material *pMaterial) {
float ambient[] = { 0.2f, 0.2f, 0.2f, 1.0 };
float diffuse[] = { 1.0, 1.0, 0.0, 1.0 };
float specular[] = { 1.0, 1.0, 1.0, 1.0 };
float shininess = 2;
memcpy( pMaterial->ambient, ambient, sizeof(ambient) );
memcpy( pMaterial->diffuse, diffuse, sizeof(diffuse) );
memcpy( pMaterial->specular, specular, sizeof(specular) );
pMaterial->shininess = shininess;
pMaterial->name = NULL;
pMaterial->map_diffuse = NULL;
}
void readMaterialLibraryFromFile(char *filename, Mesh *pMesh) {
Material *pMaterials;
int iMaterial;
char buf[BUF_SIZE];
char name[BUF_SIZE];
char *path;
gzFile f;
int i;
path = getPath(PATH_DATA, filename);
if(path == NULL) {
fprintf(stderr, "** could not optain path to file '%s'\n", filename);
return;
}
if((f = gzopen(path, "r")) == 0) {
fprintf(stderr, "** could not open file '%s'\n", filename);
free(path);
return;
}
free(path);
pMaterials = malloc( MAX_MATERIALS * sizeof( Material ) );
iMaterial = -1;
while( gzgets(f, buf, sizeof(buf)) ) {
switch(buf[0]) {
case '#': break;
case 'n':
iMaterial++;
loadDefaultMaterial(pMaterials + iMaterial);
sscanf(buf, "newmtl %s ", name);
pMaterials[iMaterial].name = malloc( strlen(name) + 1 );
strcpy( pMaterials[iMaterial].name, name );
break;
default:
if(sscanf(buf, " Ka %f %f %f ",
pMaterials[iMaterial].ambient + 0,
pMaterials[iMaterial].ambient + 1,
pMaterials[iMaterial].ambient + 2) == 3) {
// nothing
} else if(sscanf(buf, " Kd %f %f %f ",
pMaterials[iMaterial].diffuse + 0,
pMaterials[iMaterial].diffuse + 1,
pMaterials[iMaterial].diffuse + 2) == 3) {
// nothing
} else if(sscanf(buf, " Ks %f %f %f ",
pMaterials[iMaterial].specular + 0,
pMaterials[iMaterial].specular + 1,
pMaterials[iMaterial].specular + 2) == 3) {
// nothing
} else if(sscanf(buf, " Ns %f ",
& (pMaterials[iMaterial].shininess) ) == 1 ) {
// nothing
} else {
/* FIXME: "disabled error message" */
/* fprintf(stderr, "+++ unparsed material property: %s", buf); */
}
}
}
pMesh->nMaterials = iMaterial + 1;
pMesh->pMaterials = malloc( sizeof(Material) * pMesh->nMaterials );
for(i = 0; i < pMesh->nMaterials; i++) {
memcpy( pMesh->pMaterials + i, pMaterials + i, sizeof(Material) );
}
free(pMaterials);
}
void readMaterialLibrary(char *buf, Mesh *pMesh) {
char filename[BUF_SIZE];
if(sscanf(buf, " mtllib %s ", filename) != 1) {
fprintf(stderr, "*** failing parsing filename from %s\n", buf);
return;
}
readMaterialLibraryFromFile(filename, pMesh);
}
void setMaterial(char *buf, Mesh *pMesh, int *iGroup) {
char name[BUF_SIZE];
int i;
if(sscanf(buf, " usemtl %s ", name) == 1) {
// search through all materials for the current one
for(i = 0; i < pMesh->nMaterials; i++) {
if(strstr(pMesh->pMaterials[i].name, name) ==
pMesh->pMaterials[i].name) {
*iGroup = i;
return;
}
}
fprintf(stderr, "*** error: material %s not found\n", name);
} else {
fprintf(stderr, "*** error: can't parse material line %s\n", buf);
}
}
void SetMaterialColor(Mesh *pMesh, char *name, ColorType eType,
float pColor[4]) {
int i;
for(i = 0; i < pMesh->nMaterials; i++) {
if(name == NULL || strstr(pMesh->pMaterials[i].name, name) ==
pMesh->pMaterials[i].name) {
switch(eType) {
case eAmbient:
memcpy( pMesh->pMaterials[i].ambient, pColor, sizeof(float[4]) );
break;
case eDiffuse:
memcpy( pMesh->pMaterials[i].diffuse, pColor, sizeof(float[4]) );
break;
case eSpecular:
memcpy( pMesh->pMaterials[i].specular, pColor, sizeof(float[4]) );
break;
}
}
}
}
/*
void copyMaterialColors(Material *pIn, Material *pOut) {
memcpy(pOut->ambient, pIn->ambient, sizeof( ambient ));
memcpy(pOut->diffuse, pIn->diffuse, sizeof( diffuse ));
memcpy(pOut->specular, pIn->specular, sizeof( specular ));
pOut->shininess = pIn->shininess;
}
*/
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