void Radiosity::Reset() {
delete [] area;
delete [] undistributed;
delete [] absorbed;
delete [] radiance;
// create and fill the data structures
num_faces = mesh->numFaces();
area = new float[num_faces];
undistributed = new glm::vec3[num_faces];
absorbed = new glm::vec3[num_faces];
radiance = new glm::vec3[num_faces];
for (int i = 0; i < num_faces; i++) {
Face *f = mesh->getFace(i);
f->setRadiosityPatchIndex(i);
setArea(i,f->getArea());
glm::vec3 emit = f->getMaterial()->getEmittedColor();
setUndistributed(i,emit);
setAbsorbed(i,glm::vec3(0,0,0));
setRadiance(i,emit);
}
// find the patch with the most undistributed energy
findMaxUndistributed();
}
double Radiosity::Iterate() {
if (formfactors == NULL)
ComputeFormFactors();
assert (formfactors != NULL);
// ==========================================
// ASSIGNMENT: IMPLEMENT RADIOSITY ALGORITHM
// ==========================================
for (int i = 0; i < num_faces; ++i) {
Face *f1 = mesh->getFace(i);
Material *m = f1->getMaterial();
Vec3f p_i = m->getDiffuseColor();
int j = max_undistributed_patch;
if (i == j) {
continue;
}
Vec3f ff = formfactors[i * num_faces + j] * getUndistributed(j);
setRadiance(i, getRadiance(i) + ff * p_i);
setUndistributed(i, getUndistributed(i) + ff * p_i);
setAbsorbed(i, getAbsorbed(i) + (Vec3f(1,1,1)-p_i) * ff);
}
setUndistributed(max_undistributed_patch, Vec3f(0,0,0));
// return the total light yet undistributed
// (so we can decide when the solution has sufficiently converged)
findMaxUndistributed();
return total_undistributed;
}
float Radiosity::Iterate() {
if (formfactors == NULL)
ComputeFormFactors();
assert (formfactors != NULL);
// ==========================================
// ASSIGNMENT: IMPLEMENT RADIOSITY ALGORITHM
// ==========================================
//printf("\n\n");
//take the thing with the most undistributed radiosity
findMaxUndistributed();
float totalUnd = 0;
for(int j = 0; j<num_faces; j++)
{
if (j == max_undistributed_patch)
{
continue;
}
//use max_undistributed_patch for the thing giving away radience
//the j panel absorbs some of the light and reflects the rest
/*printf("MaxUndist: (%f %f %f)\tJDiffuseColor: (%f %f %f)\tAbsorbed: (%f %f %f)\tRadiance: (%f %f %f)\tUndistributed: (%f %f %f)\t\n\n", getUndistributed(max_undistributed_patch).x, getUndistributed(max_undistributed_patch).y, getUndistributed(max_undistributed_patch).z,
mesh->getFace(j)->getMaterial()->getDiffuseColor().x, mesh->getFace(j)->getMaterial()->getDiffuseColor().y, mesh->getFace(j)->getMaterial()->getDiffuseColor().z,
getAbsorbed(j).x, getAbsorbed(j).y, getAbsorbed(j).z,
getRadiance(j).x, getRadiance(j).y, getRadiance(j).x,
getUndistributed(j).x, getUndistributed(j).y, getUndistributed(j).z);//*/
//give it to everyone else based on form factor
setRadiance(j, getUndistributed(max_undistributed_patch)*(getFormFactor(max_undistributed_patch, j)/
totalFormFactori[max_undistributed_patch])*mesh->getFace(j)->getMaterial()->getDiffuseColor() +//- getAbsorbed(j) + *******INSTEAD OF GET ABSORBED THIS SHOULD BE PANEL COLOR)
getRadiance(j));//*/
setAbsorbed(j, (getUndistributed(max_undistributed_patch)*(1.0f-mesh->getFace(j)->getMaterial()->getDiffuseColor()))*
(getFormFactor(max_undistributed_patch, j)/totalFormFactori[max_undistributed_patch]) +
(getAbsorbed(j)));//*/
setUndistributed(j, getUndistributed(max_undistributed_patch)*(getFormFactor(max_undistributed_patch, j)/
totalFormFactori[max_undistributed_patch])*mesh->getFace(j)->getMaterial()->getDiffuseColor() +
getUndistributed(j));//*/
totalUnd += glm::length(getUndistributed(j));
/*printf("MaxUndist: (%f %f %f)\tJDiffuseColor: (%f %f %f)\tAbsorbed: (%f %f %f)\tRadiance: (%f %f %f)\tUndistributed: (%f %f %f)\t\n", getUndistributed(max_undistributed_patch).x, getUndistributed(max_undistributed_patch).y, getUndistributed(max_undistributed_patch).z,
mesh->getFace(j)->getMaterial()->getDiffuseColor().x, mesh->getFace(j)->getMaterial()->getDiffuseColor().y, mesh->getFace(j)->getMaterial()->getDiffuseColor().z,
getAbsorbed(j).x, getAbsorbed(j).y, getAbsorbed(j).z,
getRadiance(j).x, getRadiance(j).y, getRadiance(j).x,
getUndistributed(j).x, getUndistributed(j).y, getUndistributed(j).z);
printf("***************************************************************************************\n");//*/
}
//setRadiance(max_undistributed_patch, glm::vec3(0,0,0));
setUndistributed(max_undistributed_patch, glm::vec3(0, 0, 0));
//==============================================
// return the total light yet undistributed
//==============================================
// (so we can decide when the solution has sufficiently converged)
//printf("TotalUndistributed: %f", totalUnd);
return totalUnd;
}
