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84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
#pragma once
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#include <GLM/glm.hpp>
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#include <string>
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#include <queue>
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#include "shader.h"
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#include "logger.h"
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class Illuminer {
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protected:
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glm::vec3 _lightColor;
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public:
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Illuminer(glm::vec3 color);
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~Illuminer();
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public:
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virtual glm::vec3 ambientLightColor() const = 0;
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virtual glm::vec3 diffuseLightColor() const = 0;
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virtual glm::vec3 specularLightColor() const = 0;
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virtual void updateShader(ShaderProgram shader) const = 0;
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public:
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glm::vec3 lightColor() const { return _lightColor; }
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void setLightColor(glm::vec3 lightColor) { _lightColor = lightColor; }
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};
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// Direction light
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class DirLight : public Illuminer{
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protected:
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glm::vec3 _direction; // The outgoing direction of the light source
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public:
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DirLight(glm::vec3 direction = glm::vec3(0.0f, -1.0f, 0.0f), glm::vec3 color = glm::vec3(1.0f));
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~DirLight();
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public:
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// Getter APIs
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glm::vec3 lightDirection() const { return _direction; } // The same direction as the outgoing direction
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// Setter
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void setLightDirection(glm::vec3 direction) { _direction = direction; }
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// Render util function
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virtual void updateShader(ShaderProgram shader) const override;
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};
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// Scoped Light is a combination of point light and spot light
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// Shader setting is automatically configured based on the phi value
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// If phi < 162.5, then the light is considered as spot light
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// Otherwise it's considered as point light
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class ScopedLight : public Illuminer{
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protected:
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// Light source status
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glm::vec3 _position;
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glm::vec3 _direction;
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float _innerCutOffAngle = 162.5f;
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float _outerCutOffAngle = 180.0f;
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// Light property
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int _idealDistance = 32; // ideally calculated distance
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const float _attConstant = 1.0f; // attenuation constant
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float _attLinear = 0.14f; // attenuation linear term
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float _attQuadratic = 0.07f; // attenuation quad term
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public:
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ScopedLight(glm::vec3 position, glm::vec3 direction = glm::vec3(0.0f, -1.0f, 0.0f), glm::vec3 color = glm::vec3(1.0f));
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ScopedLight(glm::vec3 distance, glm::vec3 position, glm::vec3 direction = glm::vec3(0.0f, -1.0f, 0.0f), glm::vec3 color = glm::vec3(1.0f));
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~ScopedLight();
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public:
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// Property setters and getters
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int idealDistance() const { return _idealDistance; }
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void setIdealDistance(int distance);
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glm::vec3 lightDirection() const { return _direction; }
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void setLightDirection(glm::vec3 direction) { _direction = direction; }
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float cutOffAngle() const { return _outerCutOffAngle; }
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void setCutOffAngle(float angle);
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// Render util function
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virtual void updateShader(ShaderProgram shader) const override;
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}; |