programming – ページ 173 – プログラミング de 落描き

2022年4月7日

Shaken by ripples. Draw by openFrameworks

[ Video ]

[ About ]
波紋に揺られる。

Shaken by ripples.

[ Source ]

#pragma once
#include "ofMain.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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofTrueTypeFont font;
};

#pragma once

#include "ofMain.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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofTrueTypeFont font;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);
	ofSetColor(0);
	ofNoFill();
	ofSetLineWidth(2);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 120, true, true, true);
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	
	auto radius = (ofGetFrameNum() * 10) % 600;

	for (int y = -360 + 60; y < ofGetHeight() - 360; y += 120) {

		string word = "RIPPLE";
		auto path_list = font.getStringAsPoints(word, true, false);
		for (auto path : path_list) {

			auto outline = path.getOutline();

			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				if (outline_index != 0) { ofNextContour(true); }

				outline[outline_index] = outline[outline_index].getResampledByCount(300);
				auto vertices = outline[outline_index].getVertices();
				for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) {

					auto location = glm::vec2(vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, y + vertices[vertices_index].y + this->font.stringHeight(word) * 0.5);
					auto len = glm::length(location);

					if (len > radius - 25 && len < radius) {

						location =  glm::normalize(location) * radius;
					}

					if (len < radius + 25 && len > radius) {

						location = glm::normalize(location) * (radius + 25);
					}

					ofVertex(location);
				}
			}
			ofEndShape(true);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetColor(0);

ofNoFill();

ofSetLineWidth(2);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 120, true, true, true);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

auto radius = (ofGetFrameNum() * 10) % 600;

for (int y = -360 + 60; y < ofGetHeight() - 360; y += 120) {

string word = "RIPPLE";

auto path_list = font.getStringAsPoints(word, true, false);

for (auto path : path_list) {

auto outline = path.getOutline();

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

outline[outline_index] = outline[outline_index].getResampledByCount(300);

auto vertices = outline[outline_index].getVertices();

for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) {

auto location = glm::vec2(vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, y + vertices[vertices_index].y + this->font.stringHeight(word) * 0.5);

auto len = glm::length(location);

if (len > radius - 25 && len < radius) {

location = glm::normalize(location) * radius;

}

if (len < radius + 25 && len > radius) {

location = glm::normalize(location) * (radius + 25);

}

ofVertex(location);

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220407

[ほしいものリスト]
Amazon

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2022年4月6日

Top arrow and bottom arrow. Draw by openFrameworks

[ Video ]

[ About ]
上から矢印、下から矢印。

Top arrow and bottom arrow.

[ Source ]

#pragma once
#include "ofMain.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) {};

	void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);
};

#pragma once

#include "ofMain.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) {};

void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(255);
	ofSetLineWidth(2);
}

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

	ofSeedRandom(39);
}

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

	// 配色デザイン ビビッドブルー P144
	vector<ofColor> color_palette;
	color_palette.push_back(ofColor(18, 85, 163));
	color_palette.push_back(ofColor(0, 165, 231));
	color_palette.push_back(ofColor(93, 177, 186));
	color_palette.push_back(ofColor(44, 121, 191));
	color_palette.push_back(ofColor(136, 185, 79));
	color_palette.push_back(ofColor(246, 221, 80));
	color_palette.push_back(ofColor(200, 59, 57));
	//color_palette.push_back(ofColor(255, 255, 255));
	
	int color_index = 0;
	for (int x = 0; x <= ofGetWidth(); x += 40) {

		color_index = (color_index + 1) % color_palette.size();
		ofColor color = color_palette[color_index];

		if (x % 60 == 0) {

			auto y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 0, 1, 0, ofGetHeight()) - 30;
			this->draw_arrow(glm::vec2(x, 0), glm::vec2(x, y), 35, color);

			y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 1, 0, 0, ofGetHeight()) + 30;
			this->draw_arrow(glm::vec2(x, ofGetHeight()), glm::vec2(x, y), 35, color);
		}
		else {

			auto y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 1, 0, 0, ofGetHeight()) + 30;
			this->draw_arrow(glm::vec2(x, ofGetHeight()), glm::vec2(x, y), 35, color);

			y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 0, 1, 0, ofGetHeight()) - 30;
			this->draw_arrow(glm::vec2(x, 0), glm::vec2(x, y), 35, color);
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

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

	ofPushMatrix();
	ofTranslate(target);

	ofSetColor(color);
	ofFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofEndShape();

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

	ofSetColor(255);
	ofNoFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
	ofEndShape();

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

	ofPopMatrix();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

// 配色デザインビビッドブルー P144

vector<ofColor> color_palette;

color_palette.push_back(ofColor(18, 85, 163));

color_palette.push_back(ofColor(0, 165, 231));

color_palette.push_back(ofColor(93, 177, 186));

color_palette.push_back(ofColor(44, 121, 191));

color_palette.push_back(ofColor(136, 185, 79));

color_palette.push_back(ofColor(246, 221, 80));

color_palette.push_back(ofColor(200, 59, 57));

//color_palette.push_back(ofColor(255, 255, 255));

int color_index = 0;

for (int x = 0; x <= ofGetWidth(); x += 40) {

color_index = (color_index + 1) % color_palette.size();

ofColor color = color_palette[color_index];

if (x % 60 == 0) {

auto y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 0, 1, 0, ofGetHeight()) - 30;

this->draw_arrow(glm::vec2(x, 0), glm::vec2(x, y), 35, color);

y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 1, 0, 0, ofGetHeight()) + 30;

this->draw_arrow(glm::vec2(x, ofGetHeight()), glm::vec2(x, y), 35, color);

}

else {

auto y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 1, 0, 0, ofGetHeight()) + 30;

this->draw_arrow(glm::vec2(x, ofGetHeight()), glm::vec2(x, y), 35, color);

y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 0, 1, 0, ofGetHeight()) - 30;

this->draw_arrow(glm::vec2(x, 0), glm::vec2(x, y), 35, color);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

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

auto distance = glm::distance(target, location);

ofPushMatrix();

ofTranslate(target);

ofSetColor(color);

ofFill();

ofBeginShape();

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

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

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

ofEndShape();

ofBeginShape();

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

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

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

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

ofEndShape();

ofSetColor(255);

ofNoFill();

ofBeginShape();

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

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

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

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

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

ofEndShape();

ofBeginShape();

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

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

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

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

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220406

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年4月5日

Write down arrows. Draw by openFrameworks

[ Video ]

[ About ]
矢印を書きなぐる。

Write down arrows.

[ Source ]

#pragma once
#include "ofMain.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) {};

	void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);

	vector<float> source_deg_list;
	vector<float> target_deg_list;
	vector<ofColor> color_list;
};

#pragma once

#include "ofMain.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) {};

void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);

vector<float> source_deg_list;

vector<float> target_deg_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetLineWidth(2);
}

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

	// 配色デザイン ソフトグリーン P114
	vector<ofColor> color_palette;
	color_palette.push_back(ofColor(97, 157, 110));
	color_palette.push_back(ofColor(119, 180, 106));
	color_palette.push_back(ofColor(143, 173, 91));
	color_palette.push_back(ofColor(145, 195, 161));
	color_palette.push_back(ofColor(93, 169, 145));
	color_palette.push_back(ofColor(255, 255, 255));
	color_palette.push_back(ofColor(131, 193, 215));
	color_palette.push_back(ofColor(249, 229, 128));

	auto source_deg = ofRandom(360);
	auto target_deg = source_deg + ofRandom(45, 315);

	this->source_deg_list.push_back(source_deg);
	this->target_deg_list.push_back(target_deg);
	this->color_list.push_back(color_palette[ofRandom(color_palette.size())]);

	while (this->source_deg_list.size() > 80) {

		this->source_deg_list.erase(this->source_deg_list.begin());
		this->target_deg_list.erase(this->target_deg_list.begin());
		this->color_list.erase(this->color_list.begin());
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	float radius = 250;


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

		auto base_location = glm::vec2(radius * cos(source_deg_list[i] * DEG_TO_RAD), radius * sin(source_deg_list[i] * DEG_TO_RAD));
		auto color = this->color_list[i];
		color.setHsb(color.getHue(), color.getSaturation(), ofMap(i, 0, 80, 0, 255));

		this->draw_arrow(base_location, glm::vec2(radius * cos(target_deg_list[i] * DEG_TO_RAD), radius * sin(target_deg_list[i] * DEG_TO_RAD)), 30, color);
	}
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

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

	ofPushMatrix();
	ofTranslate(target);

	ofSetColor(color);
	ofFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofEndShape();

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

	ofSetColor(0);
	ofNoFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
	ofEndShape();

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

	ofPopMatrix();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(2);

}

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

void ofApp::update() {

// 配色デザインソフトグリーン P114

vector<ofColor> color_palette;

color_palette.push_back(ofColor(97, 157, 110));

color_palette.push_back(ofColor(119, 180, 106));

color_palette.push_back(ofColor(143, 173, 91));

color_palette.push_back(ofColor(145, 195, 161));

color_palette.push_back(ofColor(93, 169, 145));

color_palette.push_back(ofColor(255, 255, 255));

color_palette.push_back(ofColor(131, 193, 215));

color_palette.push_back(ofColor(249, 229, 128));

auto source_deg = ofRandom(360);

auto target_deg = source_deg + ofRandom(45, 315);

this->source_deg_list.push_back(source_deg);

this->target_deg_list.push_back(target_deg);

this->color_list.push_back(color_palette[ofRandom(color_palette.size())]);

while (this->source_deg_list.size() > 80) {

this->source_deg_list.erase(this->source_deg_list.begin());

this->target_deg_list.erase(this->target_deg_list.begin());

this->color_list.erase(this->color_list.begin());

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

float radius = 250;

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

auto base_location = glm::vec2(radius * cos(source_deg_list[i] * DEG_TO_RAD), radius * sin(source_deg_list[i] * DEG_TO_RAD));

auto color = this->color_list[i];

color.setHsb(color.getHue(), color.getSaturation(), ofMap(i, 0, 80, 0, 255));

this->draw_arrow(base_location, glm::vec2(radius * cos(target_deg_list[i] * DEG_TO_RAD), radius * sin(target_deg_list[i] * DEG_TO_RAD)), 30, color);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

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

auto distance = glm::distance(target, location);

ofPushMatrix();

ofTranslate(target);

ofSetColor(color);

ofFill();

ofBeginShape();

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

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

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

ofEndShape();

ofBeginShape();

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

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

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

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

ofEndShape();

ofSetColor(0);

ofNoFill();

ofBeginShape();

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

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

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

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

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

ofEndShape();

ofBeginShape();

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

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

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

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

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220405

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