small tweaks, addind mouse control and preview of chosen pattern

src/main.cpp

@@ -73,8 +73,30 @@ void clear_nodes(sf::Uint8 *nodes, sf::Vector2i dimensions) {
 	}
 }
 
-// Set up the copy pattern to load at a position, mouse click?
-// 
+std::unique_ptr<sf::Texture> generate_pattern_texture(pattern_info pattern) {
+	
+	sf::Vector2i dimensions = pattern.dimensions;
+
+	std::vector<sf::Uint8> pixels(dimensions.x * dimensions.y * 4, 0);
+
+	for (int i = 0; i < dimensions.x * dimensions.y; i += 4) {
+		
+		if (pattern.nodes[i] != 0) {
+			pixels.at(i + 0) = 125;
+			pixels.at(i + 1) = 125;
+			pixels.at(i + 2) = 125;
+			pixels.at(i + 3) = 125;
+		}
+	}
+
+
+	std::unique_ptr<sf::Texture> texture(new sf::Texture);
+	texture->create(dimensions.x, dimensions.y);
+	texture->update(pixels.data());
+
+	return std::move(texture);
+
+}
 
 int main() {
 
@@ -119,6 +141,10 @@ int main() {
 	Decoder d;
 	std::vector<const char*> pattern_list = d.getPatternList();
 
+	pattern_info pattern_info;
+	sf::Sprite pattern_sprite;
+	sf::Texture pattern_texture;
+
 	sf::Clock sf_delta_clock;
 	fps_counter render_fps;
 
@@ -141,38 +167,55 @@ int main() {
 			if (event.type == sf::Event::Closed) {
 				window.close();
 			}
-			if (event.type == sf::Event::MouseButtonPressed) {
-
+			else if (event.type == sf::Event::MouseButtonPressed) {
 				if (event.mouseButton.button == sf::Mouse::Right) {
 					mouse_state = PRESSED;
 					mouse_position = sf::Mouse::getPosition();
 				}
+				else if (event.mouseButton.button == sf::Mouse::Middle) {
+					mouse_position = sf::Mouse::getPosition();
+					copy_pattern(nodes, sf::Vector2i(WINDOW_X, WINDOW_Y), static_cast<sf::Vector2u>(mouse_position), pattern_info);
+					cl.create_buffer("first_node_buffer", WINDOW_X * WINDOW_Y, (void*)nodes, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR);
+					cl.create_buffer("second_node_buffer", WINDOW_X * WINDOW_Y, (void*)nodes, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR);
+					cl.set_kernel_arg("conways", 2, "first_node_buffer");
+					cl.set_kernel_arg("conways", 3, "second_node_buffer");
 
+				}
 			}
-			if (event.type == sf::Event::MouseButtonReleased) {
-				mouse_state = DEPRESSED;
+			else if (event.type == sf::Event::MouseButtonReleased) {
+				if (event.mouseButton.button == sf::Mouse::Right) {
+					mouse_state = DEPRESSED;
+				}
 			}
-
-			if (event.type == sf::Event::MouseWheelScrolled) {
+			else if (event.type == sf::Event::MouseWheelScrolled) {
 				zoom_level -= event.mouseWheelScroll.delta / 10;
 				sf::View v = window.getView();
 				v.setSize(static_cast<sf::Vector2f>(window.getSize()) * zoom_level);
 				window.setView(v);
 			}
-		}
+			else if (event.type == sf::Event::MouseMoved) {
+				if (mouse_state == PRESSED) {
 
-		if (mouse_state == PRESSED) {
+					sf::Vector2i mouse_delta = mouse_position - sf::Mouse::getPosition();
+					mouse_position -= mouse_delta;
 
-			sf::Vector2i mouse_delta = mouse_position - sf::Mouse::getPosition();
-			mouse_position -= mouse_delta;
+					sf::View v = window.getView();
+					auto center = v.getCenter() + (static_cast<sf::Vector2f>(mouse_delta) * zoom_level);
+					v.setCenter(center);
+					window.setView(v);
 
-			sf::View v = window.getView();
-			auto center = v.getCenter() + (static_cast<sf::Vector2f>(mouse_delta) * zoom_level);
-			v.setCenter(center);
-			window.setView(v);
+				}
+
+
+				pattern_sprite.setPosition(mouse_position.x, mouse_position.y);
+				
+
+			}
 
 		}
 
+
+
 		elapsed_time = elap_time(); // Handle time
 		delta_time = elapsed_time - current_time;
 		current_time = elapsed_time;
@@ -196,13 +239,7 @@ int main() {
 		if (ImGui::SliderInt("Simulation Speed", &simulation_speed, 30, 500)) {
 			window.setFramerateLimit(simulation_speed);
 		}
-		if (ImGui::Button("One shot")) {
 
-			std::cout << "sim" << std::endl;
-
-			/*std::cout << buffer_flip << std::endl;
-			cl.map_buffer("buffer_flip", sizeof(char), &buffer_flip);*/
-		}
 		cl.run_kernel("conways", image_resolution);
 		cl.draw(&window);
 		if (buffer_flip == 1)
@@ -220,13 +257,27 @@ int main() {
 		}
 
 		if (ImGui::Button("Load Pattern")) {
-			clear_nodes(nodes, sf::Vector2i(WINDOW_X, WINDOW_Y));
-			pattern_info p = d.decodePattern(pattern_list.at(pattern_number));
-			copy_pattern(nodes, sf::Vector2i(WINDOW_X, WINDOW_Y), sf::Vector2u(100, 300), p);
-			cl.create_buffer("first_node_buffer", WINDOW_X * WINDOW_Y, (void*)nodes, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR);
-			cl.create_buffer("second_node_buffer", WINDOW_X * WINDOW_Y, (void*)nodes, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR);
-			cl.set_kernel_arg("conways", 2, "first_node_buffer");
-			cl.set_kernel_arg("conways", 3, "second_node_buffer");
+			pattern_info = d.decodePattern(pattern_list.at(pattern_number));
+
+			sf::Vector2i dimensions = pattern_info.dimensions;
+
+			sf::Uint8* pixels = new sf::Uint8[dimensions.x * dimensions.y * 4]{ 0 };
+
+			for (int i = 0; i < dimensions.x * dimensions.y; i += 4) {
+
+				if (pattern_info.nodes[i] != 0) {
+					pixels[i + 0] = 0;
+					pixels[i + 1] = 0;
+					pixels[i + 2] = 255;
+					pixels[i + 3] = 255;
+				}
+			}
+
+			if (pattern_texture.create(dimensions.x, dimensions.y)) {
+				pattern_texture.update(pixels);
+				pattern_sprite.setTexture(pattern_texture, true);
+			}
+
 		}
 
 		if (ImGui::Button("Rerun")) {
@@ -249,14 +300,10 @@ int main() {
 
 		ImGui::Render();
 
-
-		
-
-		
-
-
 		// ImGui screws stuff up after the render, rendering a drawable resets it
-		window.draw(sf::CircleShape(0));
+		window.draw(sf::CircleShape(100));
+
+		window.draw(pattern_sprite);
 		window.display();
 
 	}