プログラミング de 落描き – ページ 346 – クリエイティブ・コーディングによる生成物とソース

2022年11月20日2022年11月20日

Accelerated arrows. Draw by openFrameworks

[ Video ]

[ About ]
加速する矢印。

[ 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(255);
	ofSetLineWidth(1.5);

	for (int i = 0; i < 2; i++) {

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

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

	int index = 0;
	auto radius = 30;
	ofColor color;

	if (ofGetFrameNum() % 3 == 0) {

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

			auto deg = ofRandom(360);
			auto speed = 1.0;

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

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

			this->location_list.push_back(location);
			this->velocity_list.push_back(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] *= 1.035;

		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);
		size = 20;
		this->draw_arrow(glm::vec2(), this->velocity_list[index], size, ofColor(255), ofColor(0));

		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);
	auto speed = glm::length(target) - 0.8;

	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 * speed * cos(angle + PI), size * speed * sin(angle + PI)));
	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);
	ofVertex(glm::vec2(size * speed * cos(angle + PI), size * speed * sin(angle + PI)));
	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(255);

ofSetLineWidth(1.5);

for (int i = 0; i < 2; i++) {

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

}

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

void ofApp::update() {

int index = 0;

auto radius = 30;

ofColor color;

if (ofGetFrameNum() % 3 == 0) {

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

auto deg = ofRandom(360);

auto speed = 1.0;

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

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

auto distance = next - location;

distance *= 1;

this->location_list.push_back(location);

this->velocity_list.push_back(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] *= 1.035;

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);

size = 20;

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

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);

auto speed = glm::length(target) - 0.8;

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 * speed * cos(angle + PI), size * speed * sin(angle + PI)));

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);

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

ofEndShape(true);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221120

2022年11月19日

Circle of dot line. Draw by openFrameworks

[ Video ]

[ About ]
点線の円。

[ 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(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetColor(255);
	ofSetLineWidth(3);
}

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

	ofSeedRandom(19);
}

//--------------------------------------------------------------
void ofApp::draw() {
	
	ofTranslate(ofGetWindowSize() * 0.5);

	float radius = 300;
	float deg_span = 30;

	for (float radius = 130; radius <= 300; radius += 5) {

		for (float deg_start = 0; deg_start < 360; deg_start += deg_span) {

			float deg_param = ofMap(ofNoise(radius * 0.01 + ofGetFrameNum() * 0.0025), 0, 1, -360, 360);

			ofNoFill();
			ofBeginShape();
			for (float deg = deg_start + deg_param; deg < deg_start + deg_param + deg_span * 0.5; deg += 1) {

				ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			}
			ofEndShape(false);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetColor(255);

ofSetLineWidth(3);

}

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

void ofApp::update() {

ofSeedRandom(19);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

float radius = 300;

float deg_span = 30;

for (float radius = 130; radius <= 300; radius += 5) {

for (float deg_start = 0; deg_start < 360; deg_start += deg_span) {

float deg_param = ofMap(ofNoise(radius * 0.01 + ofGetFrameNum() * 0.0025), 0, 1, -360, 360);

ofNoFill();

ofBeginShape();

for (float deg = deg_start + deg_param; deg < deg_start + deg_param + deg_span * 0.5; deg += 1) {

ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

}

ofEndShape(false);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221119

2022年11月18日

Box waving. Draw by openFrameworks

[ Video ]

[ About ]
波打つ箱。

[ 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) {};

	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 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) {};

ofEasyCam cam;

};

#include "ofApp.h"	

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

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

	ofBackground(255);
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
}

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

	ofSeedRandom(19);
}

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

	this->cam.begin();

	int span = 20;
	int size = span * 0.75;

	vector<ofColor> color_list = { ofColor(255, 128, 0), ofColor(128, 255, 0), ofColor(0, 128, 255) };

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

		auto color = color_list[i];
		auto noise_seed = ofRandom(1000);

		for (int x = span * 1.5 - ofGetWidth() * 0.5; x <= ofGetWidth() - span * 1.5 - ofGetWidth() * 0.5; x += span) {

			auto noise_y = ofMap(ofNoise(noise_seed, x * 0.003 + ofGetFrameNum() * 0.0025), 0, 1, ofGetHeight() * -0.5, ofGetHeight() * 0.5);

			for (int y = span * 1.5 - ofGetHeight() * 0.5; y <= ofGetWidth() - span * 1.5 - ofGetHeight() * 0.5; y += span) {

				auto gap_y = abs(noise_y - y);
				auto box_size = 0;
				if (gap_y <= span * 4) {

					box_size = ofMap(gap_y, 0, span * 4, size * 2, 0);
					box_size = box_size > size ? size : box_size;
				}

				if (box_size > 0) {

					ofFill();
					ofSetColor(color, 64);
					ofDrawBox(glm::vec3(x, y, 0), box_size);

					ofNoFill();
					ofSetColor(color);
					ofDrawBox(glm::vec3(x, y, 0), box_size);

					
				}
			}
		}
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

}

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

void ofApp::update() {

ofSeedRandom(19);

}

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

void ofApp::draw() {

this->cam.begin();

int span = 20;

int size = span * 0.75;

vector<ofColor> color_list = { ofColor(255, 128, 0), ofColor(128, 255, 0), ofColor(0, 128, 255) };

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

auto color = color_list[i];

auto noise_seed = ofRandom(1000);

for (int x = span * 1.5 - ofGetWidth() * 0.5; x <= ofGetWidth() - span * 1.5 - ofGetWidth() * 0.5; x += span) {

auto noise_y = ofMap(ofNoise(noise_seed, x * 0.003 + ofGetFrameNum() * 0.0025), 0, 1, ofGetHeight() * -0.5, ofGetHeight() * 0.5);

for (int y = span * 1.5 - ofGetHeight() * 0.5; y <= ofGetWidth() - span * 1.5 - ofGetHeight() * 0.5; y += span) {

auto gap_y = abs(noise_y - y);

auto box_size = 0;

if (gap_y <= span * 4) {

box_size = ofMap(gap_y, 0, span * 4, size * 2, 0);

box_size = box_size > size ? size : box_size;

}

if (box_size > 0) {

ofFill();

ofSetColor(color, 64);

ofDrawBox(glm::vec3(x, y, 0), box_size);

ofNoFill();

ofSetColor(color);

ofDrawBox(glm::vec3(x, y, 0), box_size);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221118

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