Point Light implemented

RayTracer/shape/PointLight.cpp

+#define _USE_MATH_DEFINES
+
+#include "PointLight.h"
+
+#include "../material/BackgroundMaterial.h"
+#include "math.h"
+
+namespace shapes {
+PointLight::PointLight(const util::Vec3& emission)
+    : material(std::make_shared<material::BackgroundMaterial>(emission)) {
+}
+util::SurfacePoint PointLight::sampleLight(const cam::Hit& h) const {
+	return util::SurfacePoint(util::Vec3(0), h.point().normalize(), {},
+	                          material);
+}
+util::Vec3 PointLight::calculateLightEmission(const util::SurfacePoint& p,
+                                              const util::Vec3& d) const {
+	// Basically this is just the emission at a surface point. And the pdf dimms
+	// the light in regard to the angle.
+	auto emission = p.emission();
+	// Illegally do not divide by area
+	// auto area = M_PI * std::pow(radius, 2);
+	auto pdf = std::pow(d.length(), 2);
+	return emission / pdf;
+}
+}  // namespace shapes

RayTracer/shape/PointLight.h

+#pragma once
+
+#include "Light.h"
+
+namespace shapes {
+class PointLight : public Light {
+   public:
+	PointLight(const util::Vec3& emission);
+
+	util::SurfacePoint sampleLight(const cam::Hit& h) const override;
+	util::Vec3 calculateLightEmission(const util::SurfacePoint& p,
+	                                  const util::Vec3& d) const override;
+
+   private:
+	std::shared_ptr<material::Material> material;
+};
+}  // namespace shapes