2018年4月 – ページ 6 – プログラミング de 落描き

2018年4月15日2018年4月14日

蜃気楼 openFrameworks

[ Video ]

[ About ]
円の両端を結ぶ線を描写しながら、Noise関数を使ってX座標をズラしています。Noise関数の値は0-1の間のになりますが、0.75以上であれば+方向にズラし、0.35以下であれば-方向にズラすという事をしています。そうすることで、円の形をある程度保ちながら、ぐねぐねした表現をすることができます。

[ 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(239, 39, 39);
	ofSetLineWidth(3);
}

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

}

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

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

	int radius = 250;
	for (int deg = 90; deg <= 270; deg += 3) {

		ofPoint point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		float noise_value = ofNoise(deg * 0.05, ofGetFrameNum() * 0.005);
		float x_param = 0;

		if (noise_value > 0.75) {
	
			x_param = ofMap(noise_value, 0.75, 1.0, 0, 200);
		}
		else if(noise_value < 0.35) {

			x_param = ofMap(noise_value, 0.35, 0.0, 0, -200);
		}

		ofDrawLine(point.x + x_param, point.y, -point.x + x_param, point.y);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetColor(239, 39, 39);

ofSetLineWidth(3);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

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

int radius = 250;

for (int deg = 90; deg <= 270; deg += 3) {

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

float noise_value = ofNoise(deg * 0.05, ofGetFrameNum() * 0.005);

float x_param = 0;

if (noise_value > 0.75) {

x_param = ofMap(noise_value, 0.75, 1.0, 0, 200);

}

else if(noise_value < 0.35) {

x_param = ofMap(noise_value, 0.35, 0.0, 0, -200);

}

ofDrawLine(point.x + x_param, point.y, -point.x + x_param, point.y);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180414

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2018年4月14日2018年4月12日

十字をくるくる openFrameworks

[ Video ]

[ About ]
十字をくるくるさせているだけですが、意外と綺麗だったので。

[ 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(39);
	ofSetWindowTitle("Insta");

	ofSetLineWidth(5);

}

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

}

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

	int span = 72;
	ofColor line_color;
	for (int x = span / 2; x < ofGetWidth() + span / 2; x += span) {

		for (int y = span / 2; y < ofGetHeight() + span / 2; y += span) {

			ofPoint point = ofPoint(x, y);

			ofPushMatrix();
			ofTranslate(point);
			ofRotate(ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.03) * 360);

			line_color.setHsb((x + y) % 255, 239, 239);
			ofSetColor(line_color);

			ofDrawLine(ofPoint(0, -span / 2), ofPoint(0, span / 2));
			ofDrawLine(ofPoint(-span / 2, 0), ofPoint(span / 2, 0));
			
			ofPopMatrix();
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofSetLineWidth(5);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

int span = 72;

ofColor line_color;

for (int x = span / 2; x < ofGetWidth() + span / 2; x += span) {

for (int y = span / 2; y < ofGetHeight() + span / 2; y += span) {

ofPoint point = ofPoint(x, y);

ofPushMatrix();

ofTranslate(point);

ofRotate(ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.03) * 360);

line_color.setHsb((x + y) % 255, 239, 239);

ofSetColor(line_color);

ofDrawLine(ofPoint(0, -span / 2), ofPoint(0, span / 2));

ofDrawLine(ofPoint(-span / 2, 0), ofPoint(span / 2, 0));

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180413

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2018年4月13日2018年4月12日

ノイズのスケールを可視化 openFrameworks

[ Video ]

[ About ]
Noise関数の引数として、頻繁にx, y座標を与えたるする事が多いのですが、その間隔を変化させたらどうなるだろう？と思いついた結果です。

四角を描写、色をNoise関数の結果で表しています。中央付近は小さい四角なのでx, y座標の値が近く模様っぽいものが現れますが、中央から離れるにしたがって四角が大きくなるので、x, y座標の値も離れます。

[ 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");

	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
}

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

	ofSeedRandom(39);
}

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

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

	float size = 1;
	float noise_value;
	ofColor rect_color;
	for (int y = size / 2; y < ofGetHeight() / 2 + size;) {

		for (int x = size / 2; x < ofGetWidth() / 2 + size / 2; x += size) {

			noise_value = ofNoise(x * 0.005, y * 0.005 - ofGetFrameNum() * 0.005);
			ofSetColor(noise_value * 255);

			ofDrawRectangle(ofPoint(x, y), size, size);
			ofDrawRectangle(ofPoint(x, -y), size, size);
			ofDrawRectangle(ofPoint(-x, y), size, size);
			ofDrawRectangle(ofPoint(-x, -y), size, size);
		}

		y += size * 1.25;
		size *= 1.5;
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

float size = 1;

float noise_value;

ofColor rect_color;

for (int y = size / 2; y < ofGetHeight() / 2 + size;) {

for (int x = size / 2; x < ofGetWidth() / 2 + size / 2; x += size) {

noise_value = ofNoise(x * 0.005, y * 0.005 - ofGetFrameNum() * 0.005);

ofSetColor(noise_value * 255);

ofDrawRectangle(ofPoint(x, y), size, size);

ofDrawRectangle(ofPoint(x, -y), size, size);

ofDrawRectangle(ofPoint(-x, y), size, size);

ofDrawRectangle(ofPoint(-x, -y), size, size);

}

y += size * 1.25;

size *= 1.5;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180412

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