Added light class

Former-commit-id: e2969fe35720e1ea2f982a86197237a50bef1389

src/Nazara/3D/Light.cpp

@@ -0,0 +1,196 @@
+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine - 3D Module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/3D/Light.hpp>
+#include <Nazara/Core/Error.hpp>
+#include <Nazara/Math/Basic.hpp>
+#include <Nazara/Renderer/Renderer.hpp>
+#include <Nazara/Renderer/Shader.hpp>
+#include <cstring>
+#include <Nazara/3D/Debug.hpp>
+
+NzLight::NzLight(nzLightType type) :
+m_type(type),
+m_ambientColor((type == nzLightType_Directional) ? NzColor(50, 50, 50) : NzColor::Black),
+m_diffuseColor(NzColor::White),
+m_specularColor(NzColor::White),
+m_attenuation(0.9f),
+m_innerAngle(15.f),
+m_outerAngle(45.f),
+m_radius(500.f)
+{
+}
+
+NzLight::NzLight(const NzLight& light)
+{
+	std::memcpy(this, &light, sizeof(NzLight)); // Aussi simple que ça
+}
+
+NzLight::~NzLight() = default;
+
+void NzLight::Apply(unsigned int i) const
+{
+	/*
+	struct Light
+	{
+		int type;
+		vec4 ambient;
+		vec4 diffuse;
+		vec4 specular;
+
+		vec4 parameters1;
+		vec4 parameters2;
+		vec2 parameters3;
+	};
+
+	Directional
+	-P1: vec3 direction
+
+	Point
+	-P1: vec3 position + float attenuation
+	-P2: float invRadius
+
+	Spot
+	-P1: vec3 position + float attenuation
+	-P2: vec3 direction + float invRadius
+	-P3: float cosInnerAngle + float cosOuterAngle
+	*/
+	const NzShader* shader = NzRenderer::GetShader();
+
+	int typeLocation = shader->GetUniformLocation("Lights[0].type");
+	int ambientLocation = shader->GetUniformLocation("Lights[0].ambient");
+	int diffuseLocation = shader->GetUniformLocation("Lights[0].diffuse");
+	int specularLocation = shader->GetUniformLocation("Lights[0].specular");
+	int parameters1Location = shader->GetUniformLocation("Lights[0].parameters1");
+	int parameters2Location = shader->GetUniformLocation("Lights[0].parameters2");
+	int parameters3Location = shader->GetUniformLocation("Lights[0].parameters3");
+
+	if (i > 0)
+	{
+		int type2Location = shader->GetUniformLocation("Lights[1].type");
+		int offset = i * (type2Location - typeLocation); // type2Location - typeLocation donne la taille de la structure
+
+		// On applique cet offset
+		typeLocation += offset;
+		ambientLocation += offset;
+		diffuseLocation += offset;
+		specularLocation += offset;
+		parameters1Location += offset;
+		parameters2Location += offset;
+		parameters3Location += offset;
+	}
+
+	shader->SendInteger(typeLocation, m_type);
+	shader->SendColor(ambientLocation, m_ambientColor);
+	shader->SendColor(diffuseLocation, m_diffuseColor);
+	shader->SendColor(specularLocation, m_specularColor);
+
+	if (!m_derivedUpdated)
+		UpdateDerived();
+
+	switch (m_type)
+	{
+		case nzLightType_Directional:
+			shader->SendVector(parameters1Location, NzVector4f(m_derivedRotation * NzVector3f::Forward()));
+			break;
+
+		case nzLightType_Point:
+			shader->SendVector(parameters1Location, NzVector4f(m_derivedTranslation, m_attenuation));
+			shader->SendVector(parameters2Location, NzVector4f(1.f/m_radius, 0.f, 0.f, 0.f));
+			break;
+
+		case nzLightType_Spot:
+			shader->SendVector(parameters1Location, NzVector4f(m_derivedTranslation, m_attenuation));
+			shader->SendVector(parameters2Location, NzVector4f(m_derivedRotation * NzVector3f::Forward(), 1.f/m_radius));
+			shader->SendVector(parameters3Location, NzVector2f(std::cos(NzDegreeToRadian(m_innerAngle)), std::cos(NzDegreeToRadian(m_outerAngle))));
+			break;
+	}
+}
+
+const NzAxisAlignedBox& NzLight::GetAABB() const
+{
+	return NzAxisAlignedBox::Null;
+}
+
+NzColor NzLight::GetAmbientColor() const
+{
+	return m_ambientColor;
+}
+
+float NzLight::GetAttenuation() const
+{
+	return m_attenuation;
+}
+
+NzColor NzLight::GetDiffuseColor() const
+{
+	return m_diffuseColor;
+}
+
+float NzLight::GetInnerAngle() const
+{
+	return m_innerAngle;
+}
+
+float NzLight::GetOuterAngle() const
+{
+	return m_outerAngle;
+}
+
+float NzLight::GetRadius() const
+{
+	return m_radius;
+}
+
+nzSceneNodeType NzLight::GetSceneNodeType() const
+{
+	return nzSceneNodeType_Light;
+}
+
+NzColor NzLight::GetSpecularColor() const
+{
+	return m_specularColor;
+}
+
+void NzLight::SetAmbientColor(const NzColor& ambient)
+{
+	m_ambientColor = ambient;
+}
+
+void NzLight::SetAttenuation(float attenuation)
+{
+	m_attenuation = attenuation;
+}
+
+void NzLight::SetDiffuseColor(const NzColor& diffuse)
+{
+	m_diffuseColor = diffuse;
+}
+
+void NzLight::SetInnerAngle(float innerAngle)
+{
+	m_innerAngle = innerAngle;
+}
+
+void NzLight::SetOuterAngle(float outerAngle)
+{
+	m_outerAngle = outerAngle;
+}
+
+void NzLight::SetRadius(float radius)
+{
+	m_radius = radius;
+}
+
+void NzLight::SetSpecularColor(const NzColor& specular)
+{
+	m_specularColor = specular;
+}
+
+NzLight& NzLight::operator=(const NzLight& light)
+{
+	std::memcpy(this, &light, sizeof(NzLight));
+
+	return *this;
+}