bool SPARSE_SDF::absoluteNearestSurfacePoint(const VEC3F& position, VEC3F& surface)
{
MyVec3 vecNormal;
Real sdf;
MyVec3 positionVec(position[0], position[1], position[2]);
MyVec3 tmpSurface = positionVec;
bool inNarrowBand = _grid->lookupDistanceAndNormalFast(positionVec, sdf, vecNormal);
if(!inNarrowBand){
cout << "lookup point inside the mesh but not captured by the narrow band!!!" << endl;
// Core::throwDefaultException(std::string("lookup point inside the mesh but not captured by the narrow band!!!"), __FILE__, __LINE__);
return false;
}
Real initSdf = sdf;
int iter = 0;
while(abs(sdf) > 1e-9 && iter < 100){
tmpSurface += (-sdf) * vecNormal;
sdf = (*_grid)(tmpSurface);
iter++;
}
Real dist = (tmpSurface - positionVec).length();
if(dist > abs(initSdf * 1.5)){
return false;
}
surface[0] = tmpSurface[0];
surface[1] = tmpSurface[1];
surface[2] = tmpSurface[2];
return true;
}
void Material::bindMaterial(Transform &T, Camera &camera)
{
glUseProgram(shaderProgram);
// MATRICES FROM TRANSFORM
GLint loc = glGetUniformLocation(shaderProgram, "uObjectWorldM");
if (loc != -1) glUniformMatrix4fv(loc, 1, GL_FALSE, glm::value_ptr(T.transform));
//
loc = glGetUniformLocation(shaderProgram, "uObjectWorldInverseM");
//printMat(T.invTransform);
if (loc != -1) glUniformMatrix4fv(loc, 1, GL_FALSE, glm::value_ptr(T.invTransform));
//
glm::mat4x4 objectWorldViewPerspect = camera.worldViewProject * T.transform;
loc = glGetUniformLocation(shaderProgram, "uObjectPerpsectM");
if (loc != -1) glUniformMatrix4fv(loc, 1, GL_FALSE, glm::value_ptr(objectWorldViewPerspect));
// MATERIAL COLORS
for (int i = 0; i < (int) colors.size(); i++) {
if (colors[i].id == -1) {
loc = glGetUniformLocation(shaderProgram, colors[i].name.c_str());
colors[i].id = loc;
}
if (colors[i].id >= 0) {
glUniform4fv(colors[i].id, 1, &colors[i].val[0]);
}
}
loc = glGetUniformLocation(shaderProgram, "uViewPosition");
if(loc != -1)
{
glm::vec4 positionVec(camera.center, 0);
glUniform4fv(loc, 1, &positionVec[0]);
}
loc = glGetUniformLocation(shaderProgram, "uViewDirection");
if(loc != -1)
{
glm::vec4 directionVec(glm::normalize(camera.eye - camera.center), 0);
glUniform4fv(loc, 1, &directionVec[0]);
}
// MATERIAL TEXTURES
for (int i = 0; i < (int) textures.size(); i++) {
if (textures[i].id == -1) {
loc = glGetUniformLocation(shaderProgram, textures[i].name.c_str());
textures[i].id = loc;
}
if (textures[i].id >= 0) {
//printf("\n%d %d\n", textures[i].id, textures[i].val->samplerId);
glActiveTexture(GL_TEXTURE0 + i);
glUniform1i(textures[i].id, i);
glBindTexture(GL_TEXTURE_2D, textures[i].val->textureId);
glBindSampler(textures[i].id, textures[i].val->samplerId);
}
}
}
