プログラミング de 落描き – ページ 727 – クリエイティブ・コーディングによる生成物とソース

2018年12月7日2018年12月7日

Friendship(Box2d). openFrameworks

[ Video ]

[ About ]
エージェントはお互いに反発します。周りの円によって作用している力が可視化されました。物理エンジンはofxBox2dです。

Agents are rebounding each other. Force has been visualized by the around circle. Physic engine is ofxBox2d.

[ 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	float radius;
	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circles;
};

#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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

float radius;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circles;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofFill();

	this->radius = 25;

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

	for (int i = 0; i < 50; i++) {

		auto circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(0.5, 0.63, 0.1);
		circle->setup(this->box2d.getWorld(), ofRandom(0, ofGetWidth()), ofRandom(0, ofGetHeight()), this->radius);
		this->circles.push_back(circle);
	}
}

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

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

		for (int j = i + 1; j < this->circles.size(); j++) {

			float distance = this->circles[i]->getPosition().distance(this->circles[j]->getPosition());
			if (distance < this->radius * 4) {

				this->circles[i]->addForce(this->circles[i]->getPosition() - this->circles[j]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 0.5, 0.002));
				this->circles[j]->addForce(this->circles[j]->getPosition() - this->circles[i]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 0.5, 0.002));
			}
		}
	}

	this->box2d.update();
}

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

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

		ofDrawCircle(this->circles[i]->getPosition(), this->radius * 0.2);

		for (int j = 0; j < this->circles.size(); j++) {

			if (i == j) {

				continue;
			}

			glm::vec2 my = glm::vec2(this->circles[i]->getPosition().x, this->circles[i]->getPosition().y);
			glm::vec2 you = glm::vec2(this->circles[j]->getPosition().x, this->circles[j]->getPosition().y);
			glm::vec2 distance = my - you;

			if (glm::length(distance) < this->radius * 4) {

				float my_rad = std::atan2(you.y - my.y, you.x - my.x);
				float you_rad = std::atan2(my.y - you.y, my.x - you.x);

				glm::vec2 my_point = my + glm::vec2(radius * cos(my_rad), radius * sin(my_rad));
				glm::vec2 you_point = you + glm::vec2(radius * cos(you_rad), radius * sin(you_rad));
				ofDrawLine(my_point, you_point);

				float rad_span = PI / ofMap(glm::length(distance), this->radius * 2, this->radius * 4, 1, 10);
				float rad_step = rad_span / 10;

				ofBeginShape();
				for (float r = you_rad - rad_span; r <= you_rad + rad_span; r += rad_step) {

					ofVertex(you + glm::vec2(radius * cos(r), radius * sin(r)));
				}
				for (float r = you_rad + rad_span; r >= you_rad - rad_span; r -= rad_step) {

					ofVertex(you + glm::vec2(radius * 0.5 * cos(r), radius * 0.5 * sin(r)));
				}
				ofEndShape(true);
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofFill();

this->radius = 25;

this->box2d.init();

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

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

for (int i = 0; i < 50; i++) {

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.63, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(0, ofGetWidth()), ofRandom(0, ofGetHeight()), this->radius);

this->circles.push_back(circle);

}

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

void ofApp::update() {

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

for (int j = i + 1; j < this->circles.size(); j++) {

float distance = this->circles[i]->getPosition().distance(this->circles[j]->getPosition());

if (distance < this->radius * 4) {

this->circles[i]->addForce(this->circles[i]->getPosition() - this->circles[j]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 0.5, 0.002));

this->circles[j]->addForce(this->circles[j]->getPosition() - this->circles[i]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 0.5, 0.002));

}

this->box2d.update();

}

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

void ofApp::draw() {

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

ofDrawCircle(this->circles[i]->getPosition(), this->radius * 0.2);

for (int j = 0; j < this->circles.size(); j++) {

if (i == j) {

continue;

}

glm::vec2 my = glm::vec2(this->circles[i]->getPosition().x, this->circles[i]->getPosition().y);

glm::vec2 you = glm::vec2(this->circles[j]->getPosition().x, this->circles[j]->getPosition().y);

glm::vec2 distance = my - you;

if (glm::length(distance) < this->radius * 4) {

float my_rad = std::atan2(you.y - my.y, you.x - my.x);

float you_rad = std::atan2(my.y - you.y, my.x - you.x);

glm::vec2 my_point = my + glm::vec2(radius * cos(my_rad), radius * sin(my_rad));

glm::vec2 you_point = you + glm::vec2(radius * cos(you_rad), radius * sin(you_rad));

ofDrawLine(my_point, you_point);

float rad_span = PI / ofMap(glm::length(distance), this->radius * 2, this->radius * 4, 1, 10);

float rad_step = rad_span / 10;

ofBeginShape();

for (float r = you_rad - rad_span; r <= you_rad + rad_span; r += rad_step) {

ofVertex(you + glm::vec2(radius * cos(r), radius * sin(r)));

}

for (float r = you_rad + rad_span; r >= you_rad - rad_span; r -= rad_step) {

ofVertex(you + glm::vec2(radius * 0.5 * cos(r), radius * 0.5 * sin(r)));

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181207

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2018年12月6日2018年12月6日

Friendship(color). openFrameworks

[ Video ]

[ About ]
エージェントは自分の色を持っいます。エージェント同士が近づくと円が発生し、円は相手の色と距離で形状が変化します。

Agent has own color. When agents approach each other, a circle arises, and circle changes shape with the color and distance of the other party.

[ 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) {};

	vector<glm::vec2> locations;
	vector<ofColor> colors;
};

#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) {};

vector<glm::vec2> locations;

vector<ofColor> colors;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofSeedRandom(39);
	this->locations.clear();

	for (int i = 0; i < 35; i++) {

		glm::vec2 location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * ofRandom(0.001, 0.0005)), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * ofRandom(0.001, 0.0005)), 0, 1, 0, ofGetHeight()));
		this->locations.push_back(location);

		ofColor color;
		color.setHsb(ofMap(i, 0, 30, 0, 255), 200, 255);
		this->colors.push_back(color);
	}
}

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

	float radius = 30;
	for (int i = 0; i < this->locations.size(); i++) {

		ofSetColor(this->colors[i]);
		ofDrawCircle(this->locations[i], radius * 0.1);

		for (int j = 0; j < this->locations.size(); j++) {

			if (i == j) {

				continue;
			}

			glm::vec2 distance = this->locations[i] - this->locations[j];
			float distance_lenght = glm::length(distance);

			if (distance_lenght < 110) {

				float angle = std::atan2(this->locations[j].y - this->locations[i].y, this->locations[j].x - this->locations[i].x);
				float near_angle = std::atan2(this->locations[i].y - this->locations[j].y, this->locations[i].x - this->locations[j].x);

				glm::vec2 point = this->locations[i] + glm::vec2(radius * cos(angle), radius * sin(angle));
				glm::vec2 near_point = this->locations[j] + glm::vec2(radius * cos(near_angle), radius * sin(near_angle));

				ofDrawLine(point, near_point);

				float rad_span = PI / ofMap(distance_lenght, 0, 110, 30, 1);

				ofBeginShape();
				for (float rad = near_angle - rad_span; rad <= near_angle + rad_span; rad += PI / 60) {

					ofVertex(this->locations[j] + glm::vec2(radius * 0.8 * cos(rad), radius * 0.8 * sin(rad)));
				}
				for (float rad = near_angle + rad_span; rad >= near_angle - rad_span; rad -= PI / 60) {

					ofVertex(this->locations[j] + glm::vec2(radius * 0.3 * cos(rad), radius * 0.3 * sin(rad)));
				}
				ofEndShape(true);
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->locations.clear();

for (int i = 0; i < 35; i++) {

glm::vec2 location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * ofRandom(0.001, 0.0005)), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * ofRandom(0.001, 0.0005)), 0, 1, 0, ofGetHeight()));

this->locations.push_back(location);

ofColor color;

color.setHsb(ofMap(i, 0, 30, 0, 255), 200, 255);

this->colors.push_back(color);

}

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

void ofApp::draw() {

float radius = 30;

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

ofSetColor(this->colors[i]);

ofDrawCircle(this->locations[i], radius * 0.1);

for (int j = 0; j < this->locations.size(); j++) {

if (i == j) {

continue;

}

glm::vec2 distance = this->locations[i] - this->locations[j];

float distance_lenght = glm::length(distance);

if (distance_lenght < 110) {

float angle = std::atan2(this->locations[j].y - this->locations[i].y, this->locations[j].x - this->locations[i].x);

float near_angle = std::atan2(this->locations[i].y - this->locations[j].y, this->locations[i].x - this->locations[j].x);

glm::vec2 point = this->locations[i] + glm::vec2(radius * cos(angle), radius * sin(angle));

glm::vec2 near_point = this->locations[j] + glm::vec2(radius * cos(near_angle), radius * sin(near_angle));

ofDrawLine(point, near_point);

float rad_span = PI / ofMap(distance_lenght, 0, 110, 30, 1);

ofBeginShape();

for (float rad = near_angle - rad_span; rad <= near_angle + rad_span; rad += PI / 60) {

ofVertex(this->locations[j] + glm::vec2(radius * 0.8 * cos(rad), radius * 0.8 * sin(rad)));

}

for (float rad = near_angle + rad_span; rad >= near_angle - rad_span; rad -= PI / 60) {

ofVertex(this->locations[j] + glm::vec2(radius * 0.3 * cos(rad), radius * 0.3 * sin(rad)));

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181206

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2018年12月5日2018年12月5日

Friendship. openFrameworks

[ Video ]

[ About ]
円同士が近づくと線を描きます。また、2つの円の角度を算出して欠けた円を描写します。

Draw line when circles approach each other. And, calculate the angle of two circles and draw the missing circle.

[ 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) {};

	vector<glm::vec2> locations;
};

#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) {};

vector<glm::vec2> locations;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(3);
	ofSetCircleResolution(36);
}

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

	ofSeedRandom(39);
	this->locations.clear();

	for (int i = 0; i < 39; i++) {

		glm::vec2 location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, 0, ofGetHeight()));
		this->locations.push_back(location);
	}
}

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

	float radius = 20;
	for (int i = 0; i < this->locations.size(); i++) {

		ofNoFill();
		ofDrawCircle(this->locations[i], radius);

		vector<glm::vec2> near_locations;
		for (int j = 0; j < this->locations.size(); j++) {

			if (i == j) {

				continue;
			}

			glm::vec2 distance = this->locations[i] - this->locations[j];
			float distance_lenght = glm::length(distance);

			if (distance_lenght < 80) {

				near_locations.push_back(this->locations[j]);
			}
		}

		if (near_locations.size() > 0) {

			int span = PI / near_locations.size();
			for (int j = 0; j < near_locations.size(); j++) {

				float angle = std::atan2(near_locations[j].y - this->locations[i].y, near_locations[j].x - this->locations[i].x);
				float near_angle = std::atan2(this->locations[i].y - near_locations[j].y, this->locations[i].x - near_locations[j].x);

				glm::vec2 point = this->locations[i] + glm::vec2(radius * cos(angle), radius * sin(angle));
				glm::vec2 near_point = near_locations[j] + glm::vec2(radius * cos(near_angle), radius * sin(near_angle));

				ofDrawLine(point, near_point);

				ofFill();
				ofBeginShape();
				for (float rad = near_angle - PI / 6; rad < near_angle + PI / 6; rad += PI / 360) {

					ofVertex(near_locations[j] + glm::vec2(radius * 0.8 * cos(rad), radius * 0.8 * sin(rad)));
				}
				ofVertex(near_locations[j]);
				ofEndShape(true);
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(3);

ofSetCircleResolution(36);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->locations.clear();

for (int i = 0; i < 39; i++) {

glm::vec2 location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, 0, ofGetHeight()));

this->locations.push_back(location);

}

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

void ofApp::draw() {

float radius = 20;

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

ofNoFill();

ofDrawCircle(this->locations[i], radius);

vector<glm::vec2> near_locations;

for (int j = 0; j < this->locations.size(); j++) {

if (i == j) {

continue;

}

glm::vec2 distance = this->locations[i] - this->locations[j];

float distance_lenght = glm::length(distance);

if (distance_lenght < 80) {

near_locations.push_back(this->locations[j]);

}

if (near_locations.size() > 0) {

int span = PI / near_locations.size();

for (int j = 0; j < near_locations.size(); j++) {

float angle = std::atan2(near_locations[j].y - this->locations[i].y, near_locations[j].x - this->locations[i].x);

float near_angle = std::atan2(this->locations[i].y - near_locations[j].y, this->locations[i].x - near_locations[j].x);

glm::vec2 point = this->locations[i] + glm::vec2(radius * cos(angle), radius * sin(angle));

glm::vec2 near_point = near_locations[j] + glm::vec2(radius * cos(near_angle), radius * sin(near_angle));

ofDrawLine(point, near_point);

ofFill();

ofBeginShape();

for (float rad = near_angle - PI / 6; rad < near_angle + PI / 6; rad += PI / 360) {

ofVertex(near_locations[j] + glm::vec2(radius * 0.8 * cos(rad), radius * 0.8 * sin(rad)));

}

ofVertex(near_locations[j]);

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181205

[ほしいものリスト]
Amazon

[ Sponsor Link ]

月	火	水	木	金	土	日
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30