2021年8月29日 – プログラミング de 落描き

[ Video ]

[ About ]
物理演算のポリゴンで矢印を作る。
Make arrows with physics polygons.

最近、新しく開発環境のPCを買い換えました。
Recently, I bought a new PC for my development environment.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {}
	void keyReleased(int key) {}
	void mouseMoved(int x, int y) {}
	void mouseDragged(int x, int y, int button) {}
	void mousePressed(int x, int y, int button) {}
	void mouseReleased(int x, int y, int button) {}
	void mouseEntered(int x, int y) {}
	void mouseExited(int x, int y) {}
	void windowResized(int w, int h) {}
	void dragEvent(ofDragInfo dragInfo) {}
	void gotMessage(ofMessage msg) {}

	ofxBox2d box2d;

	vector<ofColor> base_color_list;
	vector<glm::vec2> noise_param_list;

	vector<shared_ptr<ofxBox2dPolygon>> polygon_list;
	vector<float> polygon_life_list;
	vector<ofColor> polygon_color_list;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {}

void keyReleased(int key) {}

void mouseMoved(int x, int y) {}

void mouseDragged(int x, int y, int button) {}

void mousePressed(int x, int y, int button) {}

void mouseReleased(int x, int y, int button) {}

void mouseEntered(int x, int y) {}

void mouseExited(int x, int y) {}

void windowResized(int w, int h) {}

void dragEvent(ofDragInfo dragInfo) {}

void gotMessage(ofMessage msg) {}

ofxBox2d box2d;

vector<ofColor> base_color_list;

vector<glm::vec2> noise_param_list;

vector<shared_ptr<ofxBox2dPolygon>> polygon_list;

vector<float> polygon_life_list;

vector<ofColor> polygon_color_list;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetLineWidth(1);

	this->box2d.init();
	this->box2d.setGravity(0, 30);
	this->box2d.createBounds();
	this->box2d.setFPS(60);

	for (int i = 0; i < 4; i++) {

		this->noise_param_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));
		
		ofColor base_color;
		base_color.setHsb(ofMap(i, 0, 4, 0, 255), 230, 255);
		this->base_color_list.push_back(base_color);
	}
}

//--------------------------------------------------------------
void ofApp::update() {

	if (ofGetFrameNum() % 8 == 0) {

		for (int i = 0; i < this->noise_param_list.size(); i++) {

			auto location = glm::vec2(
				ofMap(ofNoise(this->noise_param_list[i].x, ofGetFrameNum() * 0.0075), 0, 1, 20, 700),
				ofMap(ofNoise(this->noise_param_list[i].y, ofGetFrameNum() * 0.0075), 0, 1, 100, 360));
			auto target = glm::vec2(
				ofMap(ofNoise(this->noise_param_list[i].x, (ofGetFrameNum() + 1) * 0.0075), 0, 1, 20, 700),
				ofMap(ofNoise(this->noise_param_list[i].y, (ofGetFrameNum() + 1) * 0.0075), 0, 1, 100, 360));

			auto size = 30;
			auto angle = std::atan2(target.y - location.y, target.x - location.x);

			vector<glm::vec2> vertices;
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
			vertices.push_back(location + glm::vec2(size * cos(angle), size * sin(angle)));
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

			auto polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[0], vertices[1], vertices[2]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[i]);

			polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[0], vertices[2], vertices[4]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[i]);

			polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[4], vertices[2], vertices[3]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[i]);

			polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[5], vertices[6], vertices[7]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[i]);

			polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[5], vertices[7], vertices[8]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[i]);
		}
	}

	for (int i = this->polygon_list.size() - 1; i > -1; i--) {

		this->polygon_life_list[i] -= 1;

		if (this->polygon_life_list[i] < 0) {

			this->polygon_list[i]->destroy();
			this->polygon_list.erase(this->polygon_list.begin() + i);
			this->polygon_life_list.erase(this->polygon_life_list.begin() + i);
			this->polygon_color_list.erase(this->polygon_color_list.begin() + i);
		}
	}

	this->box2d.update();
}

//--------------------------------------------------------------
void ofApp::draw() {

	ofNoFill();
	ofSetColor(39);

	for (int i = 0; i < this->noise_param_list.size(); i++) {



		auto location = glm::vec2(
			ofMap(ofNoise(this->noise_param_list[i].x, ofGetFrameNum() * 0.0075), 0, 1, 20, 700),
			ofMap(ofNoise(this->noise_param_list[i].y, ofGetFrameNum() * 0.0075), 0, 1, 100, 360));
		auto target = glm::vec2(
			ofMap(ofNoise(this->noise_param_list[i].x, (ofGetFrameNum() + 1) * 0.0075), 0, 1, 20, 700),
			ofMap(ofNoise(this->noise_param_list[i].y, (ofGetFrameNum() + 1) * 0.0075), 0, 1, 100, 360));

		auto size = 30;
		auto angle = std::atan2(target.y - location.y, target.x - location.x);

		ofSetColor(this->base_color_list[i]);
		ofNoFill();
		ofBeginShape();
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
		ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);
		ofEndShape();

		ofBeginShape();
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
		ofEndShape();
	}

	ofNoFill();
	for (int i = 0; i < this->polygon_list.size(); i++) {

		if (this->polygon_life_list[i] > 64) {

			ofSetColor(this->polygon_color_list[i]);
		}
		else {

			ofSetColor(this->polygon_color_list[i], ofMap(this->polygon_life_list[i], 64, 0, 255, 0));
		}

		this->polygon_list[i]->draw();
	}

	ofFill();
	for (int i = 0; i < this->polygon_list.size(); i++) {

		if (this->polygon_life_list[i] > 64) {

			ofSetColor(this->polygon_color_list[i], 128);
		}
		else {

			ofSetColor(this->polygon_color_list[i], ofMap(this->polygon_life_list[i], 64, 0, 128, 0));
		}

		this->polygon_list[i]->draw();
	}
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1);

this->box2d.init();

this->box2d.setGravity(0, 30);

this->box2d.createBounds();

this->box2d.setFPS(60);

for (int i = 0; i < 4; i++) {

this->noise_param_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));

ofColor base_color;

base_color.setHsb(ofMap(i, 0, 4, 0, 255), 230, 255);

this->base_color_list.push_back(base_color);

}

//--------------------------------------------------------------

void ofApp::update() {

if (ofGetFrameNum() % 8 == 0) {

for (int i = 0; i < this->noise_param_list.size(); i++) {

auto location = glm::vec2(

ofMap(ofNoise(this->noise_param_list[i].x, ofGetFrameNum() * 0.0075), 0, 1, 20, 700),

ofMap(ofNoise(this->noise_param_list[i].y, ofGetFrameNum() * 0.0075), 0, 1, 100, 360));

auto target = glm::vec2(

ofMap(ofNoise(this->noise_param_list[i].x, (ofGetFrameNum() + 1) * 0.0075), 0, 1, 20, 700),

ofMap(ofNoise(this->noise_param_list[i].y, (ofGetFrameNum() + 1) * 0.0075), 0, 1, 100, 360));

auto size = 30;

auto angle = std::atan2(target.y - location.y, target.x - location.x);

vector<glm::vec2> vertices;

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

vertices.push_back(location + glm::vec2(size * cos(angle), size * sin(angle)));

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

auto polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[0], vertices[1], vertices[2]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

this->polygon_color_list.push_back(this->base_color_list[i]);

polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[0], vertices[2], vertices[4]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

this->polygon_color_list.push_back(this->base_color_list[i]);

polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[4], vertices[2], vertices[3]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

this->polygon_color_list.push_back(this->base_color_list[i]);

polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[5], vertices[6], vertices[7]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

this->polygon_color_list.push_back(this->base_color_list[i]);

polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[5], vertices[7], vertices[8]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

this->polygon_color_list.push_back(this->base_color_list[i]);

}

for (int i = this->polygon_list.size() - 1; i > -1; i--) {

this->polygon_life_list[i] -= 1;

if (this->polygon_life_list[i] < 0) {

this->polygon_list[i]->destroy();

this->polygon_list.erase(this->polygon_list.begin() + i);

this->polygon_life_list.erase(this->polygon_life_list.begin() + i);

this->polygon_color_list.erase(this->polygon_color_list.begin() + i);

}

this->box2d.update();

}

//--------------------------------------------------------------

void ofApp::draw() {

ofNoFill();

ofSetColor(39);

for (int i = 0; i < this->noise_param_list.size(); i++) {

auto location = glm::vec2(

ofMap(ofNoise(this->noise_param_list[i].x, ofGetFrameNum() * 0.0075), 0, 1, 20, 700),

ofMap(ofNoise(this->noise_param_list[i].y, ofGetFrameNum() * 0.0075), 0, 1, 100, 360));

auto target = glm::vec2(

ofMap(ofNoise(this->noise_param_list[i].x, (ofGetFrameNum() + 1) * 0.0075), 0, 1, 20, 700),

ofMap(ofNoise(this->noise_param_list[i].y, (ofGetFrameNum() + 1) * 0.0075), 0, 1, 100, 360));

auto size = 30;

auto angle = std::atan2(target.y - location.y, target.x - location.x);

ofSetColor(this->base_color_list[i]);

ofNoFill();

ofBeginShape();

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

ofEndShape();

ofBeginShape();

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

ofEndShape();

}

ofNoFill();

for (int i = 0; i < this->polygon_list.size(); i++) {

if (this->polygon_life_list[i] > 64) {

ofSetColor(this->polygon_color_list[i]);

}

else {

ofSetColor(this->polygon_color_list[i], ofMap(this->polygon_life_list[i], 64, 0, 255, 0));

}

this->polygon_list[i]->draw();

}

ofFill();

for (int i = 0; i < this->polygon_list.size(); i++) {

if (this->polygon_life_list[i] > 64) {

ofSetColor(this->polygon_color_list[i], 128);

}

else {

ofSetColor(this->polygon_color_list[i], ofMap(this->polygon_life_list[i], 64, 0, 128, 0));

}

this->polygon_list[i]->draw();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210829

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日: 2021年8月29日

Broken color arrows. Draw by openFrameworks

2021年8月
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