Lucas de Vries
61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
#pragma once
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#include <vector>
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#include "vec3.h"
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#include "color.h"
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#include "scene/node.h"
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namespace render {
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namespace light {
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struct LightSource {
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//Returns a distance that can be used in comparative distance checks (not actual distance)
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virtual float distanceFrom(const vec3f& pos) = 0;
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//Enables the light, and advance <lightIndex>
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virtual void enable(unsigned& lightIndex, const vec3f& offset) = 0;
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//Get data from light
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virtual vec3f getPosition() const = 0;
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virtual float getRadius() const = 0;
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virtual ~LightSource() {}
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};
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struct PointLight : public LightSource {
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vec3f position;
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float radius;
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float att_constant, att_linear, att_quadratic;
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Colorf diffuse, specular;
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float distanceFrom(const vec3f& pos);
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void enable(unsigned& lightIndex, const vec3f& offset);
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vec3f getPosition() const;
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float getRadius() const;
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PointLight();
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};
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struct NodePointLight : public PointLight {
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scene::Node* followNode;
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void enable(unsigned& lightIndex, const vec3f& offset);
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vec3f getPosition() const;
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float getRadius() const;
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NodePointLight(scene::Node* follow);
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~NodePointLight();
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};
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void registerLight(LightSource* light);
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void unregisterLight(LightSource* light);
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//Removes all registered lights
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void destroyLights();
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//Returns lighting to its default state (a single white light at 0,0,0)
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void resetLights();
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//Finds up to <maximum> nearest lights to <from>
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unsigned findNearestLights(const vec3f& from, LightSource** lights, unsigned maximum);
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};
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};
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