circle – ページ 110 – プログラミング de 落描き

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

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2018年12月4日2018年12月4日

Half circle and half noise. openFrameworks

[ Video ]

[ About ]
半分が円形、半分はofNoiseで変化する図形。

Shape is half circle and half shape is changing from ofNoise.

[ 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) {};
};

#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) {};

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);
	ofSetCircleResolution(36);
}

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

}

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

	int base_radius = ofGetWidth() / 14;
	for (int x = base_radius; x < ofGetWidth(); x += base_radius * 2) {

		for (int y = base_radius; y < ofGetHeight(); y += base_radius * 2) {

			ofPushMatrix();
			ofTranslate(x, y);

			int radius = base_radius * 0.95;

			ofNoFill();
			ofDrawCircle(glm::vec2(), radius);

			radius = base_radius * 0.85;

			ofFill();
			ofBeginShape();
			for (int deg = 0; deg < 360; deg += 10) {

				glm::vec2 point = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
				float threshold = ofMap(ofNoise((point.x + x) * 0.005, (point.y + y) * 0.005, ofGetFrameNum() * 0.03), 0, 1, 0, -radius);
				if (threshold > point.y) {

					point.y = threshold;
				}

				ofVertex(point);
			}
			ofEndShape(true);

			ofPopMatrix();
		}
	}
}

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

ofSetCircleResolution(36);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

int base_radius = ofGetWidth() / 14;

for (int x = base_radius; x < ofGetWidth(); x += base_radius * 2) {

for (int y = base_radius; y < ofGetHeight(); y += base_radius * 2) {

ofPushMatrix();

ofTranslate(x, y);

int radius = base_radius * 0.95;

ofNoFill();

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

radius = base_radius * 0.85;

ofFill();

ofBeginShape();

for (int deg = 0; deg < 360; deg += 10) {

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

float threshold = ofMap(ofNoise((point.x + x) * 0.005, (point.y + y) * 0.005, ofGetFrameNum() * 0.03), 0, 1, 0, -radius);

if (threshold > point.y) {

point.y = threshold;

}

ofVertex(point);

}

ofEndShape(true);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181204

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Amazon

[ Sponsor Link ]

2018年11月1日2018年11月19日

Infinity. openFrameworks

[ Video ]

[ About ]
無限.

Infinity.

[ 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) {};
};

#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) {};

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	int radius_min = 100;
	int radius_max = 185;

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

		int radius = ofRandom(radius_min, radius_max);
		int start_deg = ofGetFrameNum() * 5 + ofRandom(300);
		int len = ofRandom(60, 360);

		ofPoint point, prev_point, base_point;
		for (int deg = start_deg; deg < start_deg + len; deg += 1) {

			int position_deg = deg % 720;
			if (position_deg < 360) {
			
				point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)) + ofPoint((radius_min + radius_max) * -0.5, 0);
			}
			else {

				int tmp_radius = ofMap(radius, radius_min, radius_max, radius_max, radius_min);
				point = ofPoint(-1 * tmp_radius * cos(deg * DEG_TO_RAD), tmp_radius * sin(deg * DEG_TO_RAD)) + ofPoint((radius_min + radius_max) * 0.5, 0);
			}

			if (deg != start_deg) {

				ofSetColor(39, ofMap(deg, start_deg, start_deg + len, 0, 255));
				ofDrawLine(prev_point, point);
			}
			prev_point = point;
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

int radius_min = 100;

int radius_max = 185;

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

int radius = ofRandom(radius_min, radius_max);

int start_deg = ofGetFrameNum() * 5 + ofRandom(300);

int len = ofRandom(60, 360);

ofPoint point, prev_point, base_point;

for (int deg = start_deg; deg < start_deg + len; deg += 1) {

int position_deg = deg % 720;

if (position_deg < 360) {

point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)) + ofPoint((radius_min + radius_max) * -0.5, 0);

}

else {

int tmp_radius = ofMap(radius, radius_min, radius_max, radius_max, radius_min);

point = ofPoint(-1 * tmp_radius * cos(deg * DEG_TO_RAD), tmp_radius * sin(deg * DEG_TO_RAD)) + ofPoint((radius_min + radius_max) * 0.5, 0);

}

if (deg != start_deg) {

ofSetColor(39, ofMap(deg, start_deg, start_deg + len, 0, 255));

ofDrawLine(prev_point, point);

}

prev_point = point;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181101

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