circle – ページ 131 – プログラミング de 落描き

2018年4月11日2018年4月10日

黒白ドット openFrameworks

[ Video ]

[ About ]
画面の左端と右端を結ぶ線を作り、線より上部には白い丸だけ、下部には黒い丸だけを描写しています。結ばれた線上にかかっている円は切れて見えるようになっているので実際には描写していないのですが、線が見えてくる気がします。

[ 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(139);
	ofSetWindowTitle("Insta");
}

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

}

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

	ofPoint start = ofPoint(0, ofNoise(11, ofGetFrameNum() * 0.01) * ofGetHeight());
	ofPoint end = ofPoint(ofGetWidth(), ofNoise(3, ofGetFrameNum() * 0.01) * ofGetHeight());
	ofPoint distance = end - start;

	float radius = 72;
	bool flag = true;
	for (int circle_x = radius; circle_x < ofGetWidth() + radius; circle_x += radius * 2) {

		for (int circle_y = radius; circle_y < ofGetHeight() + radius; circle_y += radius * 2) {

			flag ? ofSetColor(39) : ofSetColor(239);

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

				float x = radius * cos(deg * DEG_TO_RAD) + circle_x;
				float y = radius * sin(deg * DEG_TO_RAD) + circle_y;
				ofPoint point = start + (distance / ofGetWidth()) * x;
				if (y > point.y) {

					flag ? ofVertex(x, y) : ofVertex(point);
				}
				else {

					flag ? ofVertex(point) : ofVertex(x, y);
				}
			}
			ofEndShape(true);

			flag = !flag;
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(139);

ofSetWindowTitle("Insta");

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofPoint start = ofPoint(0, ofNoise(11, ofGetFrameNum() * 0.01) * ofGetHeight());

ofPoint end = ofPoint(ofGetWidth(), ofNoise(3, ofGetFrameNum() * 0.01) * ofGetHeight());

ofPoint distance = end - start;

float radius = 72;

bool flag = true;

for (int circle_x = radius; circle_x < ofGetWidth() + radius; circle_x += radius * 2) {

for (int circle_y = radius; circle_y < ofGetHeight() + radius; circle_y += radius * 2) {

flag ? ofSetColor(39) : ofSetColor(239);

ofBeginShape();

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

float x = radius * cos(deg * DEG_TO_RAD) + circle_x;

float y = radius * sin(deg * DEG_TO_RAD) + circle_y;

ofPoint point = start + (distance / ofGetWidth()) * x;

if (y > point.y) {

flag ? ofVertex(x, y) : ofVertex(point);

}

else {

flag ? ofVertex(point) : ofVertex(x, y);

}

ofEndShape(true);

flag = !flag;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180410

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2018年4月10日2018年4月9日

ねじれにねじれ openFrameworks

[ Video ]

[ About ]
Z軸に等間隔で、ある半径の円周上に5度間隔で取得した座標を取得。それぞれの点でSphereを描写・下層の点と線を結んでいます。

5度間隔の開始位置となる角度はNoise関数とフレーム数でズラしていっているので、前後の円周でズレが大きくなったり、小さくなったりしています。

[ 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) {};

	// Make Member
	ofEasyCam cam;
};

#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) {};

// Make Member

ofEasyCam cam;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	int radius = 300;
	int z_span = 150;
	int deg_span = 5;

	vector<vector<ofPoint>> points_list;

	this->cam.begin();
	ofRotateX(-90);

	for (int z = -300; z <= 300; z += z_span) {

		vector<ofPoint> points;
		int deg_start = ofNoise(z * 0.1, ofGetFrameNum() * 0.005) * 720;
		for (int deg = deg_start; deg < deg_start + 360; deg += deg_span) {

			points.push_back(ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z));
		}
		points_list.push_back(points);
	}

	
	for (int list_index = 1; list_index < points_list.size(); list_index++) {

		for (int i = 0; i < points_list[list_index].size(); i++) {

			ofSetColor(239);
			ofDrawSphere(points_list[list_index][i], 2);

			if (list_index == 1) {

				ofDrawSphere(points_list[0][i], 2);
			}

			ofSetColor(239, ofMap(points_list[list_index][i].distance(points_list[list_index - 1][i]), 0, radius, 0, 255));
			ofDrawLine(points_list[list_index][i], points_list[list_index - 1][i]);
		}
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int radius = 300;

int z_span = 150;

int deg_span = 5;

vector<vector<ofPoint>> points_list;

this->cam.begin();

ofRotateX(-90);

for (int z = -300; z <= 300; z += z_span) {

vector<ofPoint> points;

int deg_start = ofNoise(z * 0.1, ofGetFrameNum() * 0.005) * 720;

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

points.push_back(ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z));

}

points_list.push_back(points);

}

for (int list_index = 1; list_index < points_list.size(); list_index++) {

for (int i = 0; i < points_list[list_index].size(); i++) {

ofSetColor(239);

ofDrawSphere(points_list[list_index][i], 2);

if (list_index == 1) {

ofDrawSphere(points_list[0][i], 2);

}

ofSetColor(239, ofMap(points_list[list_index][i].distance(points_list[list_index - 1][i]), 0, radius, 0, 255));

ofDrawLine(points_list[list_index][i], points_list[list_index - 1][i]);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180409

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2018年4月8日2018年4月7日

さける線 openFrameworks

[ Video ]

[ About ]
中心から決まった距離を避けるように線が描写されます。中心からの距離や線の描写の有無をNoise関数で決めているので、時々で違った形に見えます。

[ 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) {};

	// Make Method
	ofPoint make_rect_point(int len, int deg, int z = 0);

	// Make Member
	ofEasyCam cam;
};

#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) {};

// Make Method

ofPoint make_rect_point(int len, int deg, int z = 0);

// Make Member

ofEasyCam cam;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofSeedRandom(39);
}

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

	float radius = 500 * ofNoise(ofGetFrameNum() * 0.05);
	ofColor line_color;

	this->cam.begin();

	for (int i = 0; i < 64; i++){

		line_color.setHsb(ofRandom(255), 239, 239);

		int z = ofRandom(-15, 15);
		ofPoint start = this->make_rect_point(ofGetWidth(), ofRandom(360) + ofNoise((ofRandom(360) + ofGetFrameNum()) * 0.003) * 360, z);
		ofPoint target = this->make_rect_point(ofGetWidth(), ofRandom(360) + ofNoise((ofRandom(360) + ofGetFrameNum()) * 0.003) * 360, z);
		ofPoint direction = target - start;
		float len = direction.length();
		direction.normalize();

		ofPoint point = start;
		for (int l = 0; l <= len; l++) {

			float noise_value = ofNoise(i * 0.5 + l * 0.005 + ofGetFrameNum() * 0.05);
			if (noise_value > 0.5) {
				
				point += direction;
				continue;
			}
			ofSetColor(line_color);

			if (point.distance(ofPoint()) <= radius) {

				ofPoint p1 = point.normalized() * radius;
				ofPoint p2 = (point + direction).normalized() * radius;
				if (p1.distance(p2) < radius) {
				
					ofDrawLine(p1, p2);
				}
			}
			else {

				ofDrawLine(point, point + direction);
			}
			point += direction;
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
ofPoint ofApp::make_rect_point(int len, int deg, int z) {

	deg += 45;
	int param = deg / 90;
	len = len / 2;

	switch (param % 4) {

	case 0:

		return ofPoint(len, ofMap(deg % 90, 0, 89, -len, len), z);
	case 1:

		return ofPoint(ofMap(deg % 90, 0, 89, len, -len), len, z);
	case 2:

		return ofPoint(-len, ofMap(deg % 90, 0, 89, len, -len), z);
	case 3:

		return ofPoint(ofMap(deg % 90, 0, 89, -len, len), -len, z);
	}

	return ofPoint();
}

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

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

100

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

float radius = 500 * ofNoise(ofGetFrameNum() * 0.05);

ofColor line_color;

this->cam.begin();

for (int i = 0; i < 64; i++){

line_color.setHsb(ofRandom(255), 239, 239);

int z = ofRandom(-15, 15);

ofPoint start = this->make_rect_point(ofGetWidth(), ofRandom(360) + ofNoise((ofRandom(360) + ofGetFrameNum()) * 0.003) * 360, z);

ofPoint target = this->make_rect_point(ofGetWidth(), ofRandom(360) + ofNoise((ofRandom(360) + ofGetFrameNum()) * 0.003) * 360, z);

ofPoint direction = target - start;

float len = direction.length();

direction.normalize();

ofPoint point = start;

for (int l = 0; l <= len; l++) {

float noise_value = ofNoise(i * 0.5 + l * 0.005 + ofGetFrameNum() * 0.05);

if (noise_value > 0.5) {

point += direction;

continue;

}

ofSetColor(line_color);

if (point.distance(ofPoint()) <= radius) {

ofPoint p1 = point.normalized() * radius;

ofPoint p2 = (point + direction).normalized() * radius;

if (p1.distance(p2) < radius) {

ofDrawLine(p1, p2);

}

else {

ofDrawLine(point, point + direction);

}

point += direction;

}

this->cam.end();

}

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

ofPoint ofApp::make_rect_point(int len, int deg, int z) {

deg += 45;

int param = deg / 90;

len = len / 2;

switch (param % 4) {

case 0:

return ofPoint(len, ofMap(deg % 90, 0, 89, -len, len), z);

case 1:

return ofPoint(ofMap(deg % 90, 0, 89, len, -len), len, z);

case 2:

return ofPoint(-len, ofMap(deg % 90, 0, 89, len, -len), z);

case 3:

return ofPoint(ofMap(deg % 90, 0, 89, -len, len), -len, z);

}

return ofPoint();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180406

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