viseq/src/main.cpp

/*
 *
 * VISEQ - Visual Sequencer
 *
 *
*/

#include "SFML/Graphics/Text.hpp"
#include "libremidi/libremidi.hpp"
#include "libremidi/message.hpp"
#include "libremidi/observer_configuration.hpp"

#include <SFML/Graphics/RectangleShape.hpp>
#include <SFML/Main.hpp>
#include <SFML/Graphics.hpp>
#include <SFML/Graphics/RenderWindow.hpp>
#include <SFML/System/Vector2.hpp>
#include <SFML/Window.hpp>
#include <SFML/OpenGL.hpp>

#include <SFML/Window/Mouse.hpp>
#include <cstdlib>
#include <iostream>
#include <stdio.h>
#include <cmath>

#include "node.h"
#include "signal.h"

libremidi::observer obs;
libremidi::midi_out midi_out;

std::vector<libremidi::input_port> midi_in_ports;
std::vector<libremidi::output_port> midi_out_ports;

std::vector<Node> nodes;
std::vector<Signal> signals;

Vec2D<float> mouse_pos;
Vec2D<float> drag_start;

bool mouse_pressed = false;
bool mouse_clicked = false;
bool mouse_touched = false;


int main(){

	srand(time(NULL));

	sf::RenderWindow window(sf::VideoMode({2560,1440}), "VISEQ");
	window.setFramerateLimit(120);

	for(const libremidi::input_port& port : obs.get_input_ports()){
		midi_in_ports.push_back(port);
	}
	
	for(const libremidi::output_port& port : obs.get_output_ports()){
		midi_out_ports.push_back(port);
	}

	for(int i = 0; i < 10; i++){
		nodes.emplace(nodes.end(), Node((float)(rand() % 2000 + 280), (float)(rand() % 1000 + 220), 15.0f));
	}
	
	for(int i = 0; i < 10; i++){
		signals.emplace(signals.end(), Signal(2560.f/2.f, 1440.f/2.f, 5.0f));
		signals[i].target_node_id = rand() % 9;
	}

	midi_out.open_port(midi_out_ports[2]);

	Vec2D<float> drag_origin;
	
	sf::Clock deltaClock;

	while(window.isOpen()){
		sf::Event event;
		while(window.pollEvent(event) ){

			if(event.type == sf::Event::Closed){
				window.close();
			}
		}

		sf::Vector2i mp = sf::Mouse::getPosition(window);
		Vec2D<float> mouse_pos = {(float)mp.x, (float)mp.y};
		
		bool mouse_toggled = false;
		mouse_pressed = sf::Mouse::isButtonPressed(sf::Mouse::Button::Left);

		if(!mouse_pressed && mouse_clicked) mouse_clicked = false;
		if(mouse_pressed && !mouse_clicked){
			mouse_clicked = true;
			mouse_toggled = true;
			drag_start = mouse_pos;
		}

		window.clear(sf::Color(46,46,46));
	
		bool hovering = false;

		for( auto& n : nodes){

			if((n.position - mouse_pos).length() <= n.radius && !hovering) {
				n.hover_move = true;
				hovering = true;
			} else {
				n.hover_move = false;
			}

			if(mouse_clicked && n.hover_move){
				n.clicked = true;
			}
			if(mouse_toggled) drag_origin = n.position;
			if(mouse_pressed && n.clicked){
				n.position = mouse_pos - (drag_start - drag_origin);
			}
			if(!mouse_pressed) n.clicked = false;
			n.update();
			n.draw(&window);
		}

		for( auto& n : signals){
			n.speed = 2.0f;
			n.direction = nodes[n.target_node_id].position - n.position;
			if(n.position.dist(&nodes[n.target_node_id].position) < n.speed * 1.5) {
				n.target_node_id++;
				midi_out.send_message(libremidi::channel_events::control_change(2, n.target_node_id, 50));
			}
			if(n.target_node_id == 10) n.target_node_id = 0;
			n.update();
			n.draw(&window);
		}
	
		if(!hovering && mouse_clicked) {
			Vec2D<float> ref = {1.f,0.f};
			Vec2D<float> lineVec = mouse_pos - drag_start; 
			float width = lineVec.length();
			float angle = ref.angleDeg(lineVec);

			sf::RectangleShape line;
			line.setSize(sf::Vector2f(width, 2));
			line.setPosition(drag_start.x, drag_start.y);
			line.setRotation(angle);
			line.setFillColor(sf::Color(100,0,0));
			window.draw(line);
		}
		//window.draw();
		window.display();
	}

}