raytracing/Material.cpp

#include "Material.h"
#include "Ray.h"
#include "Texture.h"
#include <math.h>
bool LamberMaterial::Scatter(const Ray & input_ray, const HitPoint & hit_point, Ray & out_ray)
{
	Vector3 random_vector = UnitRandomVector3InSphere();
	Vector3 new_direction = hit_point.mNormal + random_vector;
	out_ray.Set(hit_point.mPosition, new_direction, input_ray.mLightAttenuation*mDiffuseTexture->Sample(hit_point.mU, hit_point.mV));
	return true;
}
bool MetalMaterial::Scatter(const Ray & input_ray, const HitPoint & hit_point, Ray & out_ray)
{
	Vector3 new_direction = Reflect(input_ray.mDirection, hit_point.mNormal);
	out_ray.Set(hit_point.mPosition, new_direction, input_ray.mLightAttenuation*mDiffuseTexture->Sample(hit_point.mU, hit_point.mV));
	return true;
}