openFrameworks – ページ 382 – プログラミング de 落描き

2022年5月17日

Tornado circle. Draw by openFrameworks

[ Video ]

[ About ]
伸び縮みする円。

A circle that expands and contracts.

[ 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) {};
};

#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) {};

};

#include "ofApp.h"	

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

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

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

//--------------------------------------------------------------
void ofApp::update() {
	
	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	auto max_loop = 5;
	auto max_radius = 480;
	for (int deg_start = 0; deg_start < 360; deg_start += 45) {

		auto loop = ofMap(ofNoise(cos(deg_start * DEG_TO_RAD) * 0.2, sin(deg_start * DEG_TO_RAD) * 0.2, ofGetFrameNum() * 0.01), 0, 1, -1.5, max_loop);

		ofBeginShape();
		for (int deg = deg_start; deg <= deg_start + 360 * loop; deg++) {

			auto radius = ofMap(deg, deg_start, deg_start + 360 * max_loop, 50, max_radius);
			auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

			ofVertex(location);

			if (deg == deg_start) {

				ofFill();
				ofDrawCircle(location, 3);
				ofNoFill();
			}
		}
		ofEndShape();
	}
}


//--------------------------------------------------------------
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);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

auto max_loop = 5;

auto max_radius = 480;

for (int deg_start = 0; deg_start < 360; deg_start += 45) {

auto loop = ofMap(ofNoise(cos(deg_start * DEG_TO_RAD) * 0.2, sin(deg_start * DEG_TO_RAD) * 0.2, ofGetFrameNum() * 0.01), 0, 1, -1.5, max_loop);

ofBeginShape();

for (int deg = deg_start; deg <= deg_start + 360 * loop; deg++) {

auto radius = ofMap(deg, deg_start, deg_start + 360 * max_loop, 50, max_radius);

auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

ofVertex(location);

if (deg == deg_start) {

ofFill();

ofDrawCircle(location, 3);

ofNoFill();

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220517

2022年5月16日

Bubbly Yin – Yang. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォークの中間地点に勾玉を描く。

[ 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_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, 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_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color);

};

#include "ofApp.h"	

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

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

	ofBackground(0);
}

//--------------------------------------------------------------
void ofApp::update() {
	
	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	vector<glm::vec2> location_list;
	vector<ofColor> color_list;

	ofColor color;
	for (int i = 0; i < 80; i++) {

		auto location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -320, 320), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -320, 320));
		location_list.push_back(location);
		color.setHsb(ofRandom(255), 180, 255);
		color_list.push_back(color);
	}

	vector<float> size_list;
	for (int i = 0; i < location_list.size(); i++) {

		for (int k = i + 1; k < location_list.size(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < 80) {

				auto rad = atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);
				auto location = location_list[i] + (location_list[k] - location_list[i]) * 0.5;

				this->draw_MAGATAMA(location, ofMap(distance, 0, 80, 40, 1), 180 + rad * RAD_TO_DEG, color_list[i]);
				this->draw_MAGATAMA(location, ofMap(distance, 0, 80, 40, 1), rad * RAD_TO_DEG, color_list[k]);
			}
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color) {

	float len = radius * 0.5522;
	float deg = 0;

	ofPushMatrix();
	ofTranslate(location);
	ofRotate(rotate_deg);

	vector<glm::vec2> vertices;
	vector<pair<glm::vec2, glm::vec2>> handle_list;

	vertices.push_back(glm::vec2(0, 0));
	deg = 180;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius * 0.5, radius * -0.5));
	deg = 90;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(0, radius * -1));
	deg = 0;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len  * sin(deg * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius, 0));
	deg = 270;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * cos((deg + 180) * DEG_TO_RAD), len * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(0, radius));
	deg = 0;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius * -0.5, radius * 0.5));
	deg = 90;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	ofSetColor(color);
	ofFill();
	ofBeginShape();
	for (int i = 0; i < vertices.size(); i++) {

		int n = (i + 1) % vertices.size();

		ofVertex(vertices[i]);
		ofBezierVertex(handle_list[i].second, handle_list[n].first, vertices[n]);
	}

	ofNextContour(true);
	for (deg = 0; deg <= 360; deg += 5) {

		ofVertex(glm::vec2(0, radius * 0.5) + glm::vec2(radius * 0.2 * cos(deg * DEG_TO_RAD), radius * 0.2 * sin(deg * DEG_TO_RAD)));
	}
	ofEndShape(true);

	ofSetColor(ofColor(255, color.a));
	ofNoFill();
	ofBeginShape();
	for (int i = 0; i < vertices.size(); i++) {

		int n = (i + 1) % vertices.size();

		ofVertex(vertices[i]);
		ofBezierVertex(handle_list[i].second, handle_list[n].first, vertices[n]);
	}

	ofNextContour(true);
	for (deg = 0; deg <= 360; deg += 5) {

		ofVertex(glm::vec2(0, radius * 0.5) + glm::vec2(radius * 0.2 * cos(deg * DEG_TO_RAD), radius * 0.2 * sin(deg * DEG_TO_RAD)));
	}
	ofEndShape(true);

	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);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

vector<glm::vec2> location_list;

vector<ofColor> color_list;

ofColor color;

for (int i = 0; i < 80; i++) {

auto location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -320, 320), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -320, 320));

location_list.push_back(location);

color.setHsb(ofRandom(255), 180, 255);

color_list.push_back(color);

}

vector<float> size_list;

for (int i = 0; i < location_list.size(); i++) {

for (int k = i + 1; k < location_list.size(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < 80) {

auto rad = atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);

auto location = location_list[i] + (location_list[k] - location_list[i]) * 0.5;

this->draw_MAGATAMA(location, ofMap(distance, 0, 80, 40, 1), 180 + rad * RAD_TO_DEG, color_list[i]);

this->draw_MAGATAMA(location, ofMap(distance, 0, 80, 40, 1), rad * RAD_TO_DEG, color_list[k]);

}

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

void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color) {

float len = radius * 0.5522;

float deg = 0;

ofPushMatrix();

ofTranslate(location);

ofRotate(rotate_deg);

vector<glm::vec2> vertices;

vector<pair<glm::vec2, glm::vec2>> handle_list;

vertices.push_back(glm::vec2(0, 0));

deg = 180;