bool Grid::intersect(const Ray &r, Hit &h, float tmin)
{
//Prepare the Material objects
Vec3f diffuseColor(1, 1, 1);
Vec3f specularColor(0, 0, 0);
float exponent = 1;
Vec3f reflectiveColor(0, 0, 0);
Vec3f transparentColor(0, 0, 0);
float indexOfRefraction = 1;
PhongMaterial *m = new PhongMaterial(diffuseColor, specularColor, exponent,
reflectiveColor, transparentColor, indexOfRefraction);
//Start to do DDA
MarchingInfo mi;
initializeRayMarch(mi, r, tmin);
bool hitSomething = false;
int i, j, k;
do {
mi.getIndices(i, j, k);
printf("The current point is:%d,%d,%d\n", i, j, k);
if (mObjects[offset(i, j, k)].getNumObjects() > 0) {
h.set(mi.get_tmin(), m, mi.getNormal(), r);
return true;
}
mi.nextCell();
} while(i < mXSize && j < mYSize && k < mZSize);
return false;
}
/* Parse the "Materials" token */
void scene::parseMaterials()
{
char token[MAX_PARSER_TOKEN_LENGTH];
char texname[MAX_PARSER_TOKEN_LENGTH];
getToken(token);
assert (!strcmp(token, "{"));
/* Loop over each Material */
bool working=true;
while (working)
{
getToken(token);
if (!strcmp(token, "}"))
{
working = false;
}
else if (!strcmp(token, "Material"))
{
getToken(token);
assert (!strcmp(token, "{"));
texname[0] = '\0';
Vec3f diffuseColor(1,1,1);
Vec3f specularColor(0,0,0);
float shininess = 1;
Vec3f transparentColor(0,0,0);
Vec3f reflectiveColor(0,0,0);
float indexOfRefraction = 1;
while (1)
{
getToken(token);
if (!strcmp(token, "textureFilename"))
{
getToken(token);
strcpy(texname, token);
}
else if (!strcmp(token, "diffuseColor"))
diffuseColor = readVec3f();
else if (!strcmp(token, "specularColor"))
specularColor = readVec3f();
else if (!strcmp(token, "shininess"))
shininess = readFloat();
else if (!strcmp(token, "transparentColor"))
transparentColor = readVec3f();
else if (!strcmp(token, "reflectiveColor"))
reflectiveColor = readVec3f();
else if (!strcmp(token, "indexOfRefraction"))
indexOfRefraction = readFloat();
else
{
assert (!strcmp(token, "}"));
break;
}
}
material temp;
temp.diffuseCol=diffuseColor;
temp.specularCol=specularColor;
temp.shininess=shininess;
temp.transparentCol=transparentColor;
temp.reflectiveCol=reflectiveColor;
temp.refractionIndex=indexOfRefraction;
if(strcmp(texname, "NULL"))
temp.texture=jpeg_read(texname, NULL);
else
temp.texture=NULL;
myMaterials.push_back(temp);
}
}
}
