Implementado ventana de selección de color de fondo

main.cpp

@@ -9,6 +9,7 @@
 #include "gui.h"
 #include "log.h"
 #include "ventana_log.h"
+#include "ventana_color.h"
 
 // Helper que muestra un mensaje y cierra el programa
 #define panic(message) { \
@@ -53,33 +54,12 @@ void mouse_button_callback(GLFWwindow *window, int button, int action, int mods)
 	}
 }
 
-const double gradient_step = 0.05;
-const double gradient_colors[][3] = {{0.6, 0.6, 0.6}, {1, 0.65, 0}};
-
 void scroll_callback(GLFWwindow *window, double xoffset, double yoffset) {
 	static double position_in_gradient = 0;
 
 	PAG::log << "Movida la rueda del raton "
 		<< xoffset << " unidades en horizontal y "
 		<< yoffset << " unidades en vertical" << std::endl;
-
-	position_in_gradient += yoffset * gradient_step;
-
-	if (position_in_gradient > 1) {
-		position_in_gradient = 1;
-	} else if (position_in_gradient < 0) {
-		position_in_gradient = 0;
-	}
-
-	double a = (1 - position_in_gradient);
-	double b = position_in_gradient;
-
-	PAG::Renderer::getInstance().setClearColor(
-		gradient_colors[0][0] * a + gradient_colors[1][0] * b,
-		gradient_colors[0][1] * a + gradient_colors[1][1] * b,
-		gradient_colors[0][2] * a + gradient_colors[1][2] * b,
-		1.0
-	);
 }
 
 int main() {
@@ -115,6 +95,10 @@ int main() {
 	PAG::GUI::getInstance().init(window);
 	PAG::GUI::getInstance().addVentana(std::make_shared<PAG::VentanaLog>(PAG::VentanaLog()));
 
+	auto ventana_color = std::make_shared<PAG::VentanaColor>(PAG::VentanaColor());
+	ventana_color->addListener(&PAG::Renderer::getInstance());
+	PAG::GUI::getInstance().addVentana(ventana_color);
+
 	auto &renderer = PAG::Renderer::getInstance();
 
 	PAG::log << renderer.getRendererName() << std::endl;
@@ -129,7 +113,7 @@ int main() {
 	glfwSetScrollCallback(window, scroll_callback);
 
 
-	renderer.setClearColor(0.6, 0.6, 0.6, 1.0);
+	renderer.setClearColor(ventana_color->getColor());
 
 	renderer.enableDepthTest();
 

renderer.cpp

@@ -3,6 +3,8 @@
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 
+#include "ventana_color.h"
+
 namespace PAG {
 	// Basado en https://stackoverflow.com/a/1008289
 	Renderer &Renderer::getInstance() {
@@ -16,6 +18,10 @@ namespace PAG {
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 	}
 
+	void Renderer::setClearColor(std::array<float, 3> rgb) {
+		setClearColor(rgb[0], rgb[1], rgb[2], 1);
+	}
+
 	void Renderer::setClearColor(float r, float g, float b, float a) {
 		glClearColor(r, g, b, a);
 	}
@@ -41,6 +47,13 @@ namespace PAG {
 		return std::string((const char *) glGetString(GL_SHADING_LANGUAGE_VERSION));
 	}
 
+	void Renderer::wakeUp(Ventana &ventana) {
+		if (dynamic_cast<VentanaColor*>(&ventana)) {
+			auto ventana_color = dynamic_cast<VentanaColor&>(ventana);
+			setClearColor(ventana_color.getColor());
+		}
+	}
+
 	Renderer::Renderer() {};
 
 	Renderer::~Renderer() {};

renderer.h

 #pragma once
 
 #include <string>
+#include <array>
+
+#include "ventana.h"
 
 namespace PAG {
-	class Renderer {
+	class Renderer : public PAG::Ventana::Listener {
 	public:
 		static Renderer &getInstance();
 
@@ -13,6 +16,7 @@ namespace PAG {
 
 		// Funciones de opengl
 		void clear();
+		void setClearColor(std::array<float, 3> rgb);
 		void setClearColor(float, float, float, float);
 		void setViewport(int width, int height);
 
@@ -22,6 +26,8 @@ namespace PAG {
 		std::string getVendor();
 		std::string getVersion();
 		std::string getShadingLanguageVersion();
+
+		void wakeUp(Ventana &) override;
 	private:
 		Renderer();
 		~Renderer();

ventana.h

 #pragma once
 
+#include <vector>
+
 namespace PAG {
 	class Ventana {
 	public:
 		virtual void render() = 0;
 
 		virtual ~Ventana() = default;
+
+		class Listener {
+		public:
+			virtual void wakeUp(Ventana &) = 0;
+
+			virtual ~Listener() = default;
+		};
+
+		void addListener(Listener *listener) {
+			listeners.push_back(listener);
+		};
+	protected:
+		void notifyListeners() {
+			for (auto listener : listeners) {
+				listener->wakeUp(*this);
+			}
+		};
+
+		std::vector<Listener *> listeners;
 	};
 }

ventana_color.cpp

+#include "ventana_color.h"
+
+#include <imgui.h>
+
+namespace PAG {
+	void VentanaColor::render() {
+		ImGui::SetNextWindowPos(ImVec2(670, 110), ImGuiCond_FirstUseEver);
+
+		ImGui::ColorPicker3("Color", color.data(), ImGuiColorEditFlags_PickerHueWheel);
+
+		if (ImGui::IsItemEdited()) {
+			notifyListeners();
+		}
+	}
+
+	std::array<float, 3> VentanaColor::getColor() {
+		return color;
+	}
+}

ventana_color.h

+#pragma once
+
+#include "ventana.h"
+
+#include <array>
+
+namespace PAG {
+	class VentanaColor : public Ventana {
+	public:
+		void render() override;
+
+		std::array<float, 3> getColor();
+
+	private:
+		std::array<float, 3> color = {0.6, 0.6, 0.6};
+	};
+}