プログラミング de 落描き – ページ 732 – 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2月23日2019年2月23日

Distortion of torus. openFrameworks

[ Video ]

[ About ]
ノイズ関数で求めた角度のトーラス座標を結んで上から観察。トーラス座標の式は「数学デッサン教室描いて楽しむ数学のかたち」から引用

Distortion of torus.

[ 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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofNoFill();
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

}

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

	this->cam.begin();

	vector<glm::vec3> vertices_1;
	vector<glm::vec3> vertices_2;
	for (int i = 0; i < 3600; i += 1) {

		float v = i + 0.1;
		auto noise_point = glm::vec2(cos(v * DEG_TO_RAD), sin(v * DEG_TO_RAD));
		int u_start = ofMap(ofNoise(noise_point.x, noise_point.y, ofGetFrameNum() * 0.01), 0, 1, 0, 720);

		vertices_1.push_back(this->make_point(250, 50, (u_start)* DEG_TO_RAD, v * DEG_TO_RAD));
		vertices_2.push_back(this->make_point(250, 50, (u_start + 180) * DEG_TO_RAD, v * DEG_TO_RAD));
	}

	ofBeginShape();
	ofVertices(vertices_1);
	ofEndShape(true);

	ofBeginShape();
	ofVertices(vertices_2);
	ofEndShape(true);

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	float x = (R + r * cos(u)) * cos(v);
	float y = (R + r * cos(u)) * sin(v);
	float z = r * sin(u);

	return glm::vec3(x, y, z);
}

//--------------------------------------------------------------
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);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

vector<glm::vec3> vertices_1;

vector<glm::vec3> vertices_2;

for (int i = 0; i < 3600; i += 1) {

float v = i + 0.1;

auto noise_point = glm::vec2(cos(v * DEG_TO_RAD), sin(v * DEG_TO_RAD));

int u_start = ofMap(ofNoise(noise_point.x, noise_point.y, ofGetFrameNum() * 0.01), 0, 1, 0, 720);

vertices_1.push_back(this->make_point(250, 50, (u_start)* DEG_TO_RAD, v * DEG_TO_RAD));

vertices_2.push_back(this->make_point(250, 50, (u_start + 180) * DEG_TO_RAD, v * DEG_TO_RAD));

}

ofBeginShape();

ofVertices(vertices_1);

ofEndShape(true);

ofBeginShape();

ofVertices(vertices_2);

ofEndShape(true);

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

float x = (R + r * cos(u)) * cos(v);

float y = (R + r * cos(u)) * sin(v);

float z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190223

2019年2月22日2019年2月22日

Swirl of noise. openFrameworks

[ Video ]

[ About ]
ノイズの渦

Swirl of noise.

[ 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);
}

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

	ofSeedRandom(39);
}

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

	int radius_min = 15;
	int radius_max = 100;
	float deg_width = 45;
	int span = 240;

	for (int y = span * 0.5; y < ofGetHeight(); y += span) {

		for (int x = span * 0.5; x < ofGetWidth(); x += span) {

			ofPushMatrix();
			ofTranslate(x, y);

			vector<glm::vec2> vertices_top;
			vector<glm::vec2> vertices_right;
			vector<glm::vec2> vertices_bottom;
			vector<glm::vec2> vertices_left;

			float random_seed = ofRandom(720);
			for (int radius = radius_min; radius <= radius_max; radius += 1) {

				float deg_center = ofMap(ofNoise(random_seed, radius * 0.005 + ofGetFrameNum() * 0.01), 0, 1, 0, 360);

				vertices_right.push_back(glm::vec2(radius * cos((deg_center + deg_width * 0.5) * DEG_TO_RAD), radius * sin((deg_center + deg_width * 0.5) * DEG_TO_RAD)));
				vertices_left.push_back(glm::vec2(radius * cos((deg_center - deg_width * 0.5) * DEG_TO_RAD), radius * sin((deg_center - deg_width * 0.5) * DEG_TO_RAD)));

				if (radius == radius_min) {

					for (int deg = deg_center - deg_width * 0.5; deg <= deg_center + deg_width * 0.5; deg += 1) {

						vertices_bottom.push_back(glm::vec2(radius_min * cos(deg * DEG_TO_RAD), radius_min * sin(deg * DEG_TO_RAD)));
					}
				}

				if (radius == radius_max) {

					for (int deg = deg_center - deg_width * 0.5; deg <= deg_center + deg_width * 0.5; deg += 1) {

						vertices_top.push_back(glm::vec2(radius_max * cos(deg * DEG_TO_RAD), radius_max * sin(deg * DEG_TO_RAD)));
					}
				}
			}

			std::reverse(vertices_right.begin(), vertices_right.end());
			std::reverse(vertices_bottom.begin(), vertices_bottom.end());

			for (int i = 0; i < 4; i++) {

				ofRotate(90);

				ofBeginShape();
				ofVertices(vertices_top);
				ofVertices(vertices_right);
				ofVertices(vertices_bottom);
				ofVertices(vertices_left);
				ofEndShape();
			}

			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);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int radius_min = 15;

int radius_max = 100;

float deg_width = 45;

int span = 240;

for (int y = span * 0.5; y < ofGetHeight(); y += span) {

for (int x = span * 0.5; x < ofGetWidth(); x += span) {

ofPushMatrix();

ofTranslate(x, y);

vector<glm::vec2> vertices_top;

vector<glm::vec2> vertices_right;

vector<glm::vec2> vertices_bottom;

vector<glm::vec2> vertices_left;

float random_seed = ofRandom(720);

for (int radius = radius_min; radius <= radius_max; radius += 1) {

float deg_center = ofMap(ofNoise(random_seed, radius * 0.005 + ofGetFrameNum() * 0.01), 0, 1, 0, 360);

vertices_right.push_back(glm::vec2(radius * cos((deg_center + deg_width * 0.5) * DEG_TO_RAD), radius * sin((deg_center + deg_width * 0.5) * DEG_TO_RAD)));

vertices_left.push_back(glm::vec2(radius * cos((deg_center - deg_width * 0.5) * DEG_TO_RAD), radius * sin((deg_center - deg_width * 0.5) * DEG_TO_RAD)));

if (radius == radius_min) {

for (int deg = deg_center - deg_width * 0.5; deg <= deg_center + deg_width * 0.5; deg += 1) {

vertices_bottom.push_back(glm::vec2(radius_min * cos(deg * DEG_TO_RAD), radius_min * sin(deg * DEG_TO_RAD)));

}

if (radius == radius_max) {

for (int deg = deg_center - deg_width * 0.5; deg <= deg_center + deg_width * 0.5; deg += 1) {

vertices_top.push_back(glm::vec2(radius_max * cos(deg * DEG_TO_RAD), radius_max * sin(deg * DEG_TO_RAD)));

}

std::reverse(vertices_right.begin(), vertices_right.end());

std::reverse(vertices_bottom.begin(), vertices_bottom.end());

for (int i = 0; i < 4; i++) {

ofRotate(90);

ofBeginShape();

ofVertices(vertices_top);

ofVertices(vertices_right);

ofVertices(vertices_bottom);

ofVertices(vertices_left);

ofEndShape();

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190222

2019年2月21日2019年2月21日

Paint. openFrameworks

[ Video ]

[ About ]
角度ごとに半径を計算。Radius = BaseRadius + (1 + NoiseValue) ^ N

Calculate radius for each angle. Radius = BaseRadius + (1 + NoiseValue) ^ N

[ 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) {};

	glm::vec2 location;
	float percent;
	float noise_seed;
	float noise_scale;
	ofColor color;
};

#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) {};

glm::vec2 location;

float percent;

float noise_seed;

float noise_scale;

ofColor color;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetBackgroundAuto(false);
	ofSetColor(39);

	this->location = glm::vec2(ofRandom(ofGetWidth() * 0.2, ofGetWidth() * 0.8), ofRandom(ofGetHeight() * 0.2, ofGetHeight() * 0.8));
	this->percent = 0.0;
	this->noise_seed = ofRandom(10000);
	this->noise_scale = ofRandom(3, 8);
	this->color.setHsb(ofRandom(255), 230, 255);
}

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

	if (this->percent < 1.0) {

		this->percent += 0.15;
	}
	else {

		this->location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));
		this->percent = 0.f;
		this->noise_seed = ofRandom(10000);
		this->noise_scale = ofRandom(3, 8);
		this->color.setHsb(ofRandom(255), ofRandom(100, 255), ofRandom(200, 255));
	}
}

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

	float base_radius = 80;

	ofPushMatrix();
	ofTranslate(this->location);

	vector<glm::vec2> vertices;
	for (int i = 0; i < 3600; i++) {

		float deg = i * 0.1;
		auto noise_point = glm::vec2(cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD));
		auto noise_value = ofNoise(this->noise_seed, noise_point.x * this->noise_scale, noise_point.y * this->noise_scale);
		float grow_radius = base_radius + pow((1 + noise_value), 7) * this->percent;

		auto point = glm::vec2(grow_radius * cos(deg * DEG_TO_RAD), grow_radius * sin(deg * DEG_TO_RAD));
		vertices.push_back(point);
	}

	ofSetColor(this->color);

	ofBeginShape();
	ofVertices(vertices);
	ofEndShape();

	ofPopMatrix();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetBackgroundAuto(false);

ofSetColor(39);

this->location = glm::vec2(ofRandom(ofGetWidth() * 0.2, ofGetWidth() * 0.8), ofRandom(ofGetHeight() * 0.2, ofGetHeight() * 0.8));

this->percent = 0.0;

this->noise_seed = ofRandom(10000);

this->noise_scale = ofRandom(3, 8);

this->color.setHsb(ofRandom(255), 230, 255);

}

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

void ofApp::update() {

if (this->percent < 1.0) {

this->percent += 0.15;

}

else {

this->location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));

this->percent = 0.f;

this->noise_seed = ofRandom(10000);

this->noise_scale = ofRandom(3, 8);

this->color.setHsb(ofRandom(255), ofRandom(100, 255), ofRandom(200, 255));

}

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

void ofApp::draw() {

float base_radius = 80;

ofPushMatrix();

ofTranslate(this->location);

vector<glm::vec2> vertices;

for (int i = 0; i < 3600; i++) {

float deg = i * 0.1;

auto noise_point = glm::vec2(cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD));

auto noise_value = ofNoise(this->noise_seed, noise_point.x * this->noise_scale, noise_point.y * this->noise_scale);

float grow_radius = base_radius + pow((1 + noise_value), 7) * this->percent;

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

vertices.push_back(point);

}

ofSetColor(this->color);

ofBeginShape();

ofVertices(vertices);

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190221

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