プログラミング de 落描き – ページ 776 – クリエイティブ・コーディングによる生成物とソース

2019年5月11日2019年5月11日

Wave intersection point. Draw by openFrameworks

[ Video ]

[ About ]
波の交差点

Wave intersection point.

[ 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) {};

	vector<pair<glm::vec2, float>> circles;

	bool calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);
};

#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) {};

vector<pair<glm::vec2, float>> circles;

bool calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofSetColor(255);
	ofSetLineWidth(2);
	ofSetCircleResolution(36);

	for (int i = 0; i < 20; i++) {

		auto location = glm::vec2(ofRandom(ofGetWidth() * 0.1, ofGetWidth() * 0.9), ofRandom(ofGetHeight() * 0.1, ofGetHeight() * 0.9));
		auto radius = ofRandom(0, 200);

		auto circle = make_pair(location, radius);
		this->circles.push_back(circle);
	}

}

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

	for (auto& circle : this->circles) {

		circle.second += 1;

		if (circle.second > 200) {

			circle.first = glm::vec2(ofRandom(0, ofGetWidth()), ofRandom(0, ofGetHeight()));
			circle.second = 0;
		}
	}
}

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

	for (auto& circle : this->circles) {

		ofNoFill();
		ofDrawCircle(circle.first, circle.second);
		for (auto& other : this->circles) {

			if (circle == other) { continue; }

			double theta, a;
			if (this->calculate_angle(circle.first, circle.second, other.first, other.second, theta, a)) {

				auto point_1 = circle.first + glm::vec2(circle.second * cos(theta + a), circle.second * sin(theta + a));
				auto point_2 = circle.first + glm::vec2(circle.second * cos(theta - a), circle.second * sin(theta - a));

				ofFill();
				ofDrawCircle(point_1, 8);
				ofDrawCircle(point_2, 8);
			}
		}
	}

}

//--------------------------------------------------------------
bool ofApp::calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

	auto distance = glm::distance(location_1, location_2);
	if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

	theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);
	auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);
	a = acos(cos_a);
	return true;
}

//--------------------------------------------------------------
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(2);

ofSetCircleResolution(36);

for (int i = 0; i < 20; i++) {

auto location = glm::vec2(ofRandom(ofGetWidth() * 0.1, ofGetWidth() * 0.9), ofRandom(ofGetHeight() * 0.1, ofGetHeight() * 0.9));

auto radius = ofRandom(0, 200);

auto circle = make_pair(location, radius);

this->circles.push_back(circle);

}

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

void ofApp::update() {

for (auto& circle : this->circles) {

circle.second += 1;

if (circle.second > 200) {

circle.first = glm::vec2(ofRandom(0, ofGetWidth()), ofRandom(0, ofGetHeight()));

circle.second = 0;

}

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

void ofApp::draw() {

for (auto& circle : this->circles) {

ofNoFill();

ofDrawCircle(circle.first, circle.second);

for (auto& other : this->circles) {

if (circle == other) { continue; }

double theta, a;

if (this->calculate_angle(circle.first, circle.second, other.first, other.second, theta, a)) {

auto point_1 = circle.first + glm::vec2(circle.second * cos(theta + a), circle.second * sin(theta + a));

auto point_2 = circle.first + glm::vec2(circle.second * cos(theta - a), circle.second * sin(theta - a));

ofFill();

ofDrawCircle(point_1, 8);

ofDrawCircle(point_2, 8);

}

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

bool ofApp::calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

auto distance = glm::distance(location_1, location_2);

if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);

auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);

a = acos(cos_a);

return true;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190511

2019年5月10日2019年5月10日

Circle intersection point. openFrameworks

[ Video ]

[ About ]
円の交点

Circle intersection point.

[ 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) {};

	bool calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);
};

#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) {};

bool calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofSetColor(39);
	ofNoFill();
	ofSetLineWidth(2);
	ofSetCircleResolution(72);

}

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

	ofSeedRandom(39);
}

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

	vector<pair<glm::vec2, float>> circles;
	circles.push_back(make_pair(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5), 250));
	for (int i = 0; i < 20; i++) {

		auto 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()));
		auto radius = ofRandom(30, 60);

		auto circle = make_pair(location, radius);
		circles.push_back(circle);
	}

	for (auto circle : circles) {

		ofNoFill();
		ofDrawCircle(circle.first, circle.second);
		for (auto other : circles) {

			if (circle == other) { continue; }

			double theta, a;
			if (this->calculate_angle(circle.first, circle.second, other.first, other.second, theta, a)) {

				auto point_1 = circle.first + glm::vec2(circle.second * cos(theta + a), circle.second * sin(theta + a));
				auto point_2 = circle.first + glm::vec2(circle.second * cos(theta - a), circle.second * sin(theta - a));

				ofFill();
				ofDrawCircle(point_1, 7);
				ofDrawCircle(point_2, 7);
			}
		}
	}
	
}

//--------------------------------------------------------------
bool ofApp::calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

	auto distance = glm::distance(location_1, location_2);
	if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

	theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);
	auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);
	a = acos(cos_a);
	return 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);

ofNoFill();

ofSetLineWidth(2);

ofSetCircleResolution(72);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

vector<pair<glm::vec2, float>> circles;

circles.push_back(make_pair(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5), 250));

for (int i = 0; i < 20; i++) {

auto 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()));

auto radius = ofRandom(30, 60);

auto circle = make_pair(location, radius);

circles.push_back(circle);

}

for (auto circle : circles) {

ofNoFill();

ofDrawCircle(circle.first, circle.second);

for (auto other : circles) {

if (circle == other) { continue; }

double theta, a;

if (this->calculate_angle(circle.first, circle.second, other.first, other.second, theta, a)) {

auto point_1 = circle.first + glm::vec2(circle.second * cos(theta + a), circle.second * sin(theta + a));

auto point_2 = circle.first + glm::vec2(circle.second * cos(theta - a), circle.second * sin(theta - a));

ofFill();

ofDrawCircle(point_1, 7);

ofDrawCircle(point_2, 7);

}

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

bool ofApp::calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

auto distance = glm::distance(location_1, location_2);

if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);

auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);

a = acos(cos_a);

return true;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190510

2019年5月9日2019年5月9日

Double circle. openFrameworks

[ Video ]

[ About ]
二つの円周が重なったら交点を計算して、くり抜いた形状で描写

Double 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 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) {};

	bool compute_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);
};

#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) {};

bool compute_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofSetColor(39);
	ofNoFill();
	ofSetLineWidth(5);
	ofSetCircleResolution(72);

}

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

	ofSeedRandom(39);
}

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

	auto location_1 = glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	auto radius_1 = 280;

	auto location_2 = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, ofGetHeight()));
	auto radius_2 = 120;

	auto theta = 0.0;
	auto a = 0.0;
	auto result = this->compute_angle(location_1, radius_1, location_2, radius_2, theta, a);

	if (result) {

		vector<glm::vec2> vertices;
		for (auto rad = theta + a; rad <= theta + 2 * PI - a; rad += PI / 180) {

			vertices.push_back(location_1 + glm::vec2(radius_1 * cos(rad), radius_1 * sin(rad)));
		}

		this->compute_angle(location_2, radius_2, location_1, radius_1, theta, a);
		for (auto rad = theta + a; rad >= theta - a; rad -= PI / 180) {

			vertices.push_back(location_2 + glm::vec2(radius_2 * cos(rad), radius_2 * sin(rad)));
		}
		
		ofFill();
		ofSetColor(239, 39, 39);
		ofBeginShape();
		ofVertices(vertices);
		ofEndShape();

		ofNoFill();
		ofSetColor(39);
		ofBeginShape();
		ofVertices(vertices);
		ofEndShape();

	}
	else {

		ofFill();
		ofSetColor(239, 39, 39);
		ofDrawCircle(location_1, radius_1);
		ofNoFill();
		ofSetColor(39);
		ofDrawCircle(location_1, radius_1);
		
		ofFill();
		ofSetColor(239);
		ofDrawCircle(location_2, radius_2);
		ofNoFill();
		ofSetColor(39);
		ofDrawCircle(location_2, radius_2);
	}
}

//--------------------------------------------------------------
bool ofApp::compute_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

	auto distance = glm::distance(location_1, location_2);
	if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

	theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);
	auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);
	a = acos(cos_a);
	return 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);

ofNoFill();

ofSetLineWidth(5);

ofSetCircleResolution(72);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto location_1 = glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

auto radius_1 = 280;

auto location_2 = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, ofGetHeight()));

auto radius_2 = 120;

auto theta = 0.0;

auto a = 0.0;

auto result = this->compute_angle(location_1, radius_1, location_2, radius_2, theta, a);

if (result) {

vector<glm::vec2> vertices;

for (auto rad = theta + a; rad <= theta + 2 * PI - a; rad += PI / 180) {

vertices.push_back(location_1 + glm::vec2(radius_1 * cos(rad), radius_1 * sin(rad)));

}

this->compute_angle(location_2, radius_2, location_1, radius_1, theta, a);

for (auto rad = theta + a; rad >= theta - a; rad -= PI / 180) {

vertices.push_back(location_2 + glm::vec2(radius_2 * cos(rad), radius_2 * sin(rad)));

}

ofFill();

ofSetColor(239, 39, 39);

ofBeginShape();

ofVertices(vertices);

ofEndShape();

ofNoFill();

ofSetColor(39);

ofBeginShape();

ofVertices(vertices);

ofEndShape();

}

else {

ofFill();

ofSetColor(239, 39, 39);

ofDrawCircle(location_1, radius_1);

ofNoFill();

ofSetColor(39);

ofDrawCircle(location_1, radius_1);

ofFill();

ofSetColor(239);

ofDrawCircle(location_2, radius_2);

ofNoFill();

ofSetColor(39);

ofDrawCircle(location_2, radius_2);

}

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

bool ofApp::compute_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

auto distance = glm::distance(location_1, location_2);

if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);

auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);

a = acos(cos_a);

return true;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190509

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