circle – ページ 134 – プログラミング de 落描き

2018年3月23日2018年3月22日

水玉のいず openFrameworks

[ Video ]

[ About ]
円周上に隙間を作らない形で円を並べたいなぁと何となく思たち。

その目的自体は割と早く作れたのですが、円周を重ねて順々に大きくしたいっ！と思った結果、ドツボにハマりました。結局、ループでちょっと(0.1)ずつ大きくして良い感じの半径を見つけるというショボい実装に…

ちなみに、動画ではNoiseで円の大きさを変えているので綺麗に並んでい姿は確認不可です。

[ 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);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	ofSetColor(39);
}

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

}

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

	int deg_span = 8;
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);
	ofRotate(deg_span * 0.5f);

	float radius = 50;
	float small_radius = 0;
	for (int i = 0; radius < 330; i++) {

		if (small_radius == 0) {
			
			ofPoint p1 = ofPoint(radius * cos(0), radius * sin(0));
			ofPoint p2 = ofPoint(radius * cos(deg_span * DEG_TO_RAD), radius * sin(deg_span * DEG_TO_RAD));
			small_radius = p1.distance(p2) * 0.5;
		}

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

			float noise_value = ofMap(ofNoise(i * 0.1, deg * 0.02 + ofGetFrameNum() * 0.03), 0, 1, 0, 1);
			ofPoint point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

			ofDrawCircle(point, small_radius * noise_value);
		}

		float next_small_radius = 0;
		float tmp_radius = radius;
		while (radius < tmp_radius + small_radius + next_small_radius) {

			ofPoint p1 = ofPoint(radius * cos(0), radius * sin(0));
			ofPoint p2 = ofPoint(radius * cos(deg_span * DEG_TO_RAD), radius * sin(deg_span * DEG_TO_RAD));
			next_small_radius = p1.distance(p2) * 0.5;

			radius += 0.1;
		}

		small_radius = next_small_radius;
	}
}

//========================================================================
int main() {

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetColor(39);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

int deg_span = 8;

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

ofRotate(deg_span * 0.5f);

float radius = 50;

float small_radius = 0;

for (int i = 0; radius < 330; i++) {

if (small_radius == 0) {

ofPoint p1 = ofPoint(radius * cos(0), radius * sin(0));

ofPoint p2 = ofPoint(radius * cos(deg_span * DEG_TO_RAD), radius * sin(deg_span * DEG_TO_RAD));

small_radius = p1.distance(p2) * 0.5;

}

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

float noise_value = ofMap(ofNoise(i * 0.1, deg * 0.02 + ofGetFrameNum() * 0.03), 0, 1, 0, 1);

ofPoint point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

ofDrawCircle(point, small_radius * noise_value);

}

float next_small_radius = 0;

float tmp_radius = radius;

while (radius < tmp_radius + small_radius + next_small_radius) {

ofPoint p1 = ofPoint(radius * cos(0), radius * sin(0));

ofPoint p2 = ofPoint(radius * cos(deg_span * DEG_TO_RAD), radius * sin(deg_span * DEG_TO_RAD));

next_small_radius = p1.distance(p2) * 0.5;

radius += 0.1;

}

small_radius = next_small_radius;

}

//========================================================================

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180322

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2018年3月21日2018年3月20日

街 openFrameworks

[ Video ]

[ About ]
無限ループ的なものを書きたかったので。ソースコードはゴリ押しで書いた感が否めませんが、久々に落書きしたっ！って感じがしました。

[ 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) {};

	ofEasyCam cam;
	void draw_building(float x, int y_span);
};

#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) {};

ofEasyCam cam;

void draw_building(float x, int y_span);

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	ofEnableDepthTest();
	ofSetLineWidth(3);
	ofSetCircleResolution(60);

	this->cam.setPosition(ofPoint(0, -620, 100));
	this->cam.setTarget(ofPoint(0, 0, 0));
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	
	int y;
	int y_span = 72;

	// Draw Line
	for (y = -ofGetHeight() - (ofGetFrameNum() * 5) % y_span; y < ofGetHeight(); y += y_span) {

		ofFill();
		ofSetColor(39);
		ofDrawRectangle(ofPoint(-50, y), 100, 20);
		ofDrawRectangle(ofPoint(-50, y), 5, y_span);
		ofDrawRectangle(ofPoint(45, y), 5, y_span);

		ofSetColor(239);
		ofDrawRectangle(ofPoint(-45, y + 20), 90, y_span - 20);
	}

	// Draw Building
	this->draw_building(50, y_span);
	this->draw_building(-50, y_span);

	// Draw Sun
	ofTranslate(ofPoint(0, ofGetHeight(), 0));
	ofRotateX(90);
	ofFill();
	ofSetColor(139, 0, 0);
	ofDrawCircle(ofPoint(), 500);

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::draw_building(float x, int y_span) {

	int param = ofRandom(393939);

	std::vector<ofPoint> vertices;
	int y = -ofGetHeight() - (ofGetFrameNum() * 5) % y_span;
	vertices.push_back(ofPoint(x, y, 0));
	for (; y < ofGetHeight(); y += y_span) {

		float z = ofMap(ofNoise((y + param) * 0.3 + (ofGetFrameNum() * 5) * 0.3), 0, 1, 30, 250);
		vertices.push_back(ofPoint(x, y, z));
		vertices.push_back(ofPoint(x, y + y_span, z));
	}
	vertices.push_back(ofPoint(x, y, 0));

	ofFill();
	ofSetColor(239);
	ofBeginShape();
	ofVertices(vertices);
	ofEndShape(true);

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

//========================================================================
int main() {

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

ofSetLineWidth(3);

ofSetCircleResolution(60);

this->cam.setPosition(ofPoint(0, -620, 100));

this->cam.setTarget(ofPoint(0, 0, 0));

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

int y;

int y_span = 72;

// Draw Line

for (y = -ofGetHeight() - (ofGetFrameNum() * 5) % y_span; y < ofGetHeight(); y += y_span) {

ofFill();

ofSetColor(39);

ofDrawRectangle(ofPoint(-50, y), 100, 20);

ofDrawRectangle(ofPoint(-50, y), 5, y_span);

ofDrawRectangle(ofPoint(45, y), 5, y_span);

ofSetColor(239);

ofDrawRectangle(ofPoint(-45, y + 20), 90, y_span - 20);

}

// Draw Building

this->draw_building(50, y_span);

this->draw_building(-50, y_span);

// Draw Sun

ofTranslate(ofPoint(0, ofGetHeight(), 0));

ofRotateX(90);

ofFill();

ofSetColor(139, 0, 0);

ofDrawCircle(ofPoint(), 500);

this->cam.end();

}

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

void ofApp::draw_building(float x, int y_span) {

int param = ofRandom(393939);

std::vector<ofPoint> vertices;

int y = -ofGetHeight() - (ofGetFrameNum() * 5) % y_span;

vertices.push_back(ofPoint(x, y, 0));

for (; y < ofGetHeight(); y += y_span) {

float z = ofMap(ofNoise((y + param) * 0.3 + (ofGetFrameNum() * 5) * 0.3), 0, 1, 30, 250);

vertices.push_back(ofPoint(x, y, z));

vertices.push_back(ofPoint(x, y + y_span, z));

}

vertices.push_back(ofPoint(x, y, 0));

ofFill();

ofSetColor(239);

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

ofNoFill();

ofSetColor(39);

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

}

//========================================================================

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180320

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2018年3月14日2018年3月13日

円周を結ぶライン openFrameworks

[ Video ]

[ About ]
円周上の2点を結ぶ線が85(255 / 3)本あります。また、線の濃さ(Alpha)はそれぞれ違っています。線が無い場所でも円の輪郭が見えてくる気がして面白いですね。

[ 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) {};
};

#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);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	ofSetLineWidth(2);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	float radius = 300;
	for (int i = 0; i < 255; i += 3) {

		ofSetColor(239, i);

		float deg_1 = ofRandom(360);
		deg_1 += ofMap(ofNoise((deg_1 + i) * 0.1, ofGetFrameNum() * 0.0005), 0, 1, -180, 180);
		float deg_2 = ofRandom(360);
		deg_2 += ofMap(ofNoise((deg_2 + i) * 0.1, ofGetFrameNum() * 0.0005), 0, 1, -180, 180);

		ofPoint point_1 = ofPoint(radius * cos(deg_1 * DEG_TO_RAD), radius * sin(deg_1 * DEG_TO_RAD));
		ofPoint point_2 = ofPoint(radius * cos(deg_2 * DEG_TO_RAD), radius * sin(deg_2 * DEG_TO_RAD));

		ofDrawLine(point_1, point_2);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofSetLineWidth(2);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

float radius = 300;

for (int i = 0; i < 255; i += 3) {

ofSetColor(239, i);

float deg_1 = ofRandom(360);

deg_1 += ofMap(ofNoise((deg_1 + i) * 0.1, ofGetFrameNum() * 0.0005), 0, 1, -180, 180);

float deg_2 = ofRandom(360);

deg_2 += ofMap(ofNoise((deg_2 + i) * 0.1, ofGetFrameNum() * 0.0005), 0, 1, -180, 180);

ofPoint point_1 = ofPoint(radius * cos(deg_1 * DEG_TO_RAD), radius * sin(deg_1 * DEG_TO_RAD));

ofPoint point_2 = ofPoint(radius * cos(deg_2 * DEG_TO_RAD), radius * sin(deg_2 * DEG_TO_RAD));

ofDrawLine(point_1, point_2);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180313

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