From 37a8af6b65aa9e10ac771cf00c9c60ee11ec1e12 Mon Sep 17 00:00:00 2001
From: Tleety <dahltobbe@hotmail.com>
Date: Sun, 11 May 2014 01:05:22 +0200
Subject: [PATCH] Added being able to change attenuation in real time

---
 src/Components/PointLight.h |  6 ++--
 src/Renderer.cpp            | 55 ++++++++++++++++++++++++++++++++++++-
 src/Renderer.h              |  1 +
 3 files changed, 58 insertions(+), 4 deletions(-)

diff --git a/src/Components/PointLight.h b/src/Components/PointLight.h
index 646ea01..b08be67 100755
--- a/src/Components/PointLight.h
+++ b/src/Components/PointLight.h
@@ -11,11 +11,11 @@ struct PointLight : Component
 {
 	PointLight() 
 		: Specular(1.0f, 1.0f, 1.0f)
-		, Diffuse(0.4f, 0.4f, 0.4f)
+		, Diffuse(1.0f, 1.0f, 1.0f)
 		, specularExponent(50.0f)
-		, ConstantAttenuation(1.05f)
+		, ConstantAttenuation(1.0f)
 		, LinearAttenuation(0.f)
-		, QuadraticAttenuation(2.55f)
+		, QuadraticAttenuation(3.f)
 	{ }
 
 	float ConstantAttenuation, LinearAttenuation, QuadraticAttenuation;
diff --git a/src/Renderer.cpp b/src/Renderer.cpp
index b8204c7..f652a28 100755
--- a/src/Renderer.cpp
+++ b/src/Renderer.cpp
@@ -133,6 +133,9 @@ void Renderer::LoadContent()
 	m_FinalPassProgram.Compile();
 	m_FinalPassProgram.Link();
 	Gamma = 2.2f;
+	CAtt = 1.0f;
+	LAtt = 0.0f;
+	QAtt = 3.0f;
 	m_ScreenQuad = CreateQuad();
 
 	FrameBufferTextures();
@@ -161,6 +164,49 @@ void Renderer::Draw(double dt)
 		LOG_INFO("Gamma_DOWN: %f", Gamma);
 	}
 
+	if(glfwGetKey(m_Window, GLFW_KEY_1))
+	{
+		if(glfwGetKey(m_Window, GLFW_KEY_KP_ADD))
+		{
+			CAtt += 0.5f * dt;
+			LOG_INFO("Const: %f", CAtt);
+		}
+		if(glfwGetKey(m_Window, GLFW_KEY_KP_SUBTRACT))
+		{
+			CAtt -= 0.5f * dt;
+			LOG_INFO("Const: %f", CAtt);
+		}
+	}
+	if(glfwGetKey(m_Window, GLFW_KEY_2))
+	{
+		if(glfwGetKey(m_Window, GLFW_KEY_KP_ADD))
+		{
+			LAtt += 0.5f * dt;
+			LOG_INFO("Linear: %f", LAtt);
+		}
+		if(glfwGetKey(m_Window, GLFW_KEY_KP_SUBTRACT))
+		{
+			LAtt -= 0.5f * dt;
+			LOG_INFO("Linear: %f", LAtt);
+		}
+	}
+	if(glfwGetKey(m_Window, GLFW_KEY_3))
+	{
+		if(glfwGetKey(m_Window, GLFW_KEY_KP_ADD))
+		{
+			QAtt += 0.5f * dt;
+			LOG_INFO("Quadratic: %f", QAtt);
+		}
+		if(glfwGetKey(m_Window, GLFW_KEY_KP_SUBTRACT))
+		{
+			QAtt -= 0.5f * dt;
+			LOG_INFO("Quadratic: %f", QAtt);
+		}
+	}
+	
+
+
+
 	glDisable(GL_BLEND);
 
 	DrawFBO();
@@ -657,7 +703,7 @@ void Renderer::DrawFBO()
 	m_FinalPassProgram.Bind();
 
 	// Ambient light
-	glUniform3fv(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "La"), 1, glm::value_ptr(glm::vec3(0.3f, 0.3f, 0.3f)));
+	glUniform3fv(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "La"), 1, glm::value_ptr(glm::vec3(0.1f, 0.1f, 0.1f)));
 	glUniform1f(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "Gamma"), Gamma);
 
 	glActiveTexture(GL_TEXTURE0);
@@ -733,6 +779,10 @@ void Renderer::DrawLightScene()
 		glUniform1f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "LinearAttenuation"), light.LinearAttenuation);
 		glUniform1f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "QuadraticAttenuation"), light.QuadraticAttenuation);
 
+// 		glUniform1f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "ConstantAttenuation"), CAtt);
+// 		glUniform1f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "LinearAttenuation"), LAtt);
+// 		glUniform1f(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "QuadraticAttenuation"), QAtt);
+
  		glDrawArrays(GL_TRIANGLES, 0, m_sphereModel->Vertices.size());
 	};
 	glEnable (GL_DEPTH_TEST);
@@ -750,6 +800,9 @@ glm::mat4 Renderer::CreateLightMatrix(Light &_light)
 	float c = _light.ConstantAttenuation;
 	float l = _light.LinearAttenuation;
 	float q = _light.QuadraticAttenuation;
+// 	float c = CAtt;
+// 	float l = LAtt;
+// 	float q = QAtt;
 	float cutOffRadius = abs(sqrt((-4*c*q) + pow(l, 2) + (1024*q) - l) / (2*q));
 
 	glm::mat4 model;
diff --git a/src/Renderer.h b/src/Renderer.h
index f1f728e..672c6f6 100755
--- a/src/Renderer.h
+++ b/src/Renderer.h
@@ -85,6 +85,7 @@ private:
 	bool m_DrawNormals;
 	bool m_DrawWireframe;
 	bool m_DrawBounds;
+	float CAtt, LAtt, QAtt;
 
 	std::shared_ptr<Skybox> m_Skybox;