2022年10月 – プログラミング de 落描き

2022年10月31日

Connecting circles and squares. Draw by openFrameworks

[ Video ]

[ About ]
円と四角形をつなげる。

[ 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) {};

	glm::vec2 make_point(int len, int param);

	ofEasyCam cam;
};

#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) {};

glm::vec2 make_point(int len, int param);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
}

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

}

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

	this->cam.begin();

	int radius = 240;
	int len = radius * 2.5;

	for (int param = 0; param <= 100; param++) {

		int deg = (param * 3.6 - 135);
		deg += ofMap(ofNoise(ofGetFrameNum() * 0.01), 0, 1, -730, 720);

		auto location_1 = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);
		auto location_2 = this->make_point(len, param);

		ofDrawLine(location_1, location_2);

		ofDrawCircle(location_1, 3);
		ofDrawRectangle(location_2, 6, 6);
	}

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec2 ofApp::make_point(int len, int param) {

	param = param % 100;
	if (param < 25) {

		return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);
	}
	else if (param < 50) {

		return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));
	}
	else if (param < 75) {

		return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);
	}
	else {

		return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofSetLineWidth(2);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

int radius = 240;

int len = radius * 2.5;

for (int param = 0; param <= 100; param++) {

int deg = (param * 3.6 - 135);

deg += ofMap(ofNoise(ofGetFrameNum() * 0.01), 0, 1, -730, 720);

auto location_1 = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

auto location_2 = this->make_point(len, param);

ofDrawLine(location_1, location_2);

ofDrawCircle(location_1, 3);

ofDrawRectangle(location_2, 6, 6);

}

this->cam.end();

}

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

glm::vec2 ofApp::make_point(int len, int param) {

param = param % 100;

if (param < 25) {

return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);

}

else if (param < 50) {

return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));

}

else if (param < 75) {

return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);

}

else {

return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221031

2022年10月30日

Arrow whirlpool. Draw by openFrameworks

[ video ]

[ About ]
矢印の渦巻。

[ 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) {};

	void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor fill_color, ofColor no_fill_color);
	
	vector<glm::vec2> noise_seed_list;
	vector<glm::vec2> location_list;
	vector<glm::vec2> velocity_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 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 fill_color, ofColor no_fill_color);

vector<glm::vec2> noise_seed_list;

vector<glm::vec2> location_list;

vector<glm::vec2> velocity_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(1.5);
	
	for (int i = 0; i < 3; i++) {

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

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

	int index = 0;
	auto radius = 120;
	ofColor color;
	for (auto& noise_seed : this->noise_seed_list) {

		auto deg = ofGetFrameNum() * 3 + index * 120;
		auto next_deg = deg + 3;

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

		auto distance = location - next;
		distance *= 1;

		for (int i = 0; i < 3; i++) {

			auto future = location + distance * 8;
			auto random_deg = ofRandom(360);
			future += glm::vec2(15 * cos(random_deg * DEG_TO_RAD), 15 * sin(random_deg * DEG_TO_RAD));
			auto future_distance = future - location;

			color.setHsb(ofRandom(255), 230, 255);

			this->location_list.push_back(location);
			this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance));
		}

		index++;
	}

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

		this->location_list[i] += this->velocity_list[i];
		this->velocity_list[i] *= 1.01;

		if (glm::distance(glm::vec2(), this->location_list[i]) > 1000) {

			this->location_list.erase(this->location_list.begin() + i);
			this->velocity_list.erase(this->velocity_list.begin() + i);
		}
	}

}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	ofRotateY(180);

	int index = 0;
	for (auto& location : this->location_list) {

		ofPushMatrix();
		ofTranslate(location);

		auto size = ofMap(glm::length(location), 120, 360, 5, 46);
		this->draw_arrow(glm::vec2(), this->velocity_list[index], size, ofColor(0), ofColor(255));

		ofPopMatrix();

		index++;
	}

}

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

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

	ofPushMatrix();
	ofTranslate(target);

	ofSetColor(fill_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(no_fill_color);
	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(1.5);

for (int i = 0; i < 3; i++) {

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

}

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

void ofApp::update() {

int index = 0;

auto radius = 120;

ofColor color;

for (auto& noise_seed : this->noise_seed_list) {

auto deg = ofGetFrameNum() * 3 + index * 120;

auto next_deg = deg + 3;

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

auto next = glm::vec2(radius * cos(next_deg * DEG_TO_RAD), radius * sin(next_deg * DEG_TO_RAD));

auto distance = location - next;

distance *= 1;

for (int i = 0; i < 3; i++) {

auto future = location + distance * 8;

auto random_deg = ofRandom(360);

future += glm::vec2(15 * cos(random_deg * DEG_TO_RAD), 15 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

color.setHsb(ofRandom(255), 230, 255);

this->location_list.push_back(location);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance));

}

index++;

}

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

this->location_list[i] += this->velocity_list[i];

this->velocity_list[i] *= 1.01;

if (glm::distance(glm::vec2(), this->location_list[i]) > 1000) {

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

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofRotateY(180);

int index = 0;

for (auto& location : this->location_list) {

ofPushMatrix();

ofTranslate(location);

auto size = ofMap(glm::length(location), 120, 360, 5, 46);

this->draw_arrow(glm::vec2(), this->velocity_list[index], size, ofColor(0), ofColor(255));

ofPopMatrix();

index++;

}

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

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

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

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

ofPushMatrix();

ofTranslate(target);

ofSetColor(fill_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(no_fill_color);

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/Insta20221030

2022年10月29日2022年10月29日

whirlpool. Draw by openFrameworks

[ Video ]

[ About ]
渦巻。

[ Source ]

#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) {};

	ofMesh mesh;
};

#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) {};

ofMesh mesh;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetColor(255);
	ofSetLineWidth(0.5);

	ofNoFill();
	ofSetCircleResolution(120);

	this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

	this->mesh.clear();
	int max_radius = 300;

	for (float deg = 0; deg < 360; deg += 0.2) {

		int base = ofRandom(max_radius);
		int speed = ofRandom(2, 10);
		int tmp_deg = deg + ofGetFrameNum() * speed;

		auto radius = max_radius - (base + ofGetFrameNum() * speed) % max_radius;
		auto location_1 = glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD), 0);
		auto color_1 = ofColor(255, radius > max_radius - 50 ? 255 : radius < 50 ? 0 : ofMap(radius, 50, max_radius - 50, 0, 255));

		tmp_deg += speed;
		
		radius = max_radius - (base + (ofGetFrameNum() + 2) * speed) % max_radius;
		auto location_2 = glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD), 0);
		auto color_2 = ofColor(255, radius > max_radius - 50 ? 255 : radius < 50 ? 0 : ofMap(radius, 50, max_radius - 50, 0, 255));

		if (glm::distance(location_1, location_2) < 100) {

			this->mesh.addVertex(location_1);
			this->mesh.addVertex(location_2);

			this->mesh.addColor(color_1);
			this->mesh.addColor(color_2);

			this->mesh.addIndex(this->mesh.getNumVertices() - 1);
			this->mesh.addIndex(this->mesh.getNumVertices() - 2);
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	this->mesh.drawWireframe();

	ofNoFill();
	ofSetColor(255);
	ofDrawCircle(glm::vec2(), 300);
}


//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetColor(255);

ofSetLineWidth(0.5);

ofNoFill();

ofSetCircleResolution(120);

this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

int max_radius = 300;

for (float deg = 0; deg < 360; deg += 0.2) {

int base = ofRandom(max_radius);

int speed = ofRandom(2, 10);

int tmp_deg = deg + ofGetFrameNum() * speed;

auto radius = max_radius - (base + ofGetFrameNum() * speed) % max_radius;

auto location_1 = glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD), 0);

auto color_1 = ofColor(255, radius > max_radius - 50 ? 255 : radius < 50 ? 0 : ofMap(radius, 50, max_radius - 50, 0, 255));

tmp_deg += speed;

radius = max_radius - (base + (ofGetFrameNum() + 2) * speed) % max_radius;

auto location_2 = glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD), 0);

auto color_2 = ofColor(255, radius > max_radius - 50 ? 255 : radius < 50 ? 0 : ofMap(radius, 50, max_radius - 50, 0, 255));

if (glm::distance(location_1, location_2) < 100) {

this->mesh.addVertex(location_1);

this->mesh.addVertex(location_2);

this->mesh.addColor(color_1);

this->mesh.addColor(color_2);

this->mesh.addIndex(this->mesh.getNumVertices() - 1);

this->mesh.addIndex(this->mesh.getNumVertices() - 2);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

this->mesh.drawWireframe();

ofNoFill();

ofSetColor(255);

ofDrawCircle(glm::vec2(), 300);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221029

2022年10月
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