noise – ページ 341 – プログラミング de 落描き

2019年2月3日

Middle of hue. openFrameworks

[ Video ]

[ About ]
keynoteの「色相の中間」というワードとソースが引っかかっていたので、とりあえず自分で作ってみる。パーティクルの中心側が自身の色、周りの色は最も近いパーティクルとの色相の中間色(になっていたらいいな)

Particle center color is original color. outor color is middle of hue of nearest particle.

[ 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 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) {}
};

#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 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);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetLineWidth(2);
}

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

	ofSeedRandom(39);
}

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

	vector<glm::vec2> locations;
	ofColor color;
	vector<ofColor> origin_colors;
	vector<ofColor> mix_colors;
	for (int i = 0; i < 20; 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()));
		locations.push_back(location);

		color.setHsb(ofRandom(255), 255, 255);
		origin_colors.push_back(color);
		mix_colors.push_back(color);
	}

	for (int i = 0; i < locations.size(); i++) {

		int nearest_index = i;
		float nearest_distance = 150;
		for (int k = 0; k < locations.size(); k++) {

			float distance = glm::distance(locations[i], locations[k]);
			if (i != k && distance < nearest_distance) {

				nearest_index = k;
				nearest_distance = distance;
			}
		}

		ofSetColor(origin_colors[i]);
		ofDrawLine(locations[i], locations[nearest_index]);

		if (i != nearest_index) {

			float min_hue = min(origin_colors[i].getHue(), origin_colors[nearest_index].getHue());
			float max_hue = max(origin_colors[i].getHue(), origin_colors[nearest_index].getHue());
			float distance = max_hue - min_hue;

			if (distance < 128) {

				mix_colors[i].setHue((min_hue + max_hue) / 2);
			}
			else {

				mix_colors[i].setHue((min_hue + max_hue) / 2 - 128);
			}
		}
	}

	for (int i = 0; i < locations.size(); i++) {

		ofSetColor(mix_colors[i]);
		ofDrawCircle(locations[i], 35);

		ofSetColor(origin_colors[i]);
		ofDrawCircle(locations[i], 25);
	}
}

//--------------------------------------------------------------
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() {

vector<glm::vec2> locations;

ofColor color;

vector<ofColor> origin_colors;

vector<ofColor> mix_colors;

for (int i = 0; i < 20; 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()));

locations.push_back(location);

color.setHsb(ofRandom(255), 255, 255);

origin_colors.push_back(color);

mix_colors.push_back(color);

}

for (int i = 0; i < locations.size(); i++) {

int nearest_index = i;

float nearest_distance = 150;

for (int k = 0; k < locations.size(); k++) {

float distance = glm::distance(locations[i], locations[k]);

if (i != k && distance < nearest_distance) {

nearest_index = k;

nearest_distance = distance;

}

ofSetColor(origin_colors[i]);

ofDrawLine(locations[i], locations[nearest_index]);

if (i != nearest_index) {

float min_hue = min(origin_colors[i].getHue(), origin_colors[nearest_index].getHue());

float max_hue = max(origin_colors[i].getHue(), origin_colors[nearest_index].getHue());

float distance = max_hue - min_hue;

if (distance < 128) {

mix_colors[i].setHue((min_hue + max_hue) / 2);

}

else {

mix_colors[i].setHue((min_hue + max_hue) / 2 - 128);

}

for (int i = 0; i < locations.size(); i++) {

ofSetColor(mix_colors[i]);

ofDrawCircle(locations[i], 35);

ofSetColor(origin_colors[i]);

ofDrawCircle(locations[i], 25);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190203

2019年1月31日2019年2月21日

Dancing shell. openFrameworks

[ Video ]

[ About ]
踊る貝。「数学デッサン教室描いて楽しむ数学のかたち」によると一つの式から色々な貝が描けるらしい。面白い！

Dancing shell.

[ 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_shell_point(float a, float b, float c, float h, float k, float u, float v, float w, int R);

	ofEasyCam cam;
	vector<vector<glm::vec3>> verticesList;
};

#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_shell_point(float a, float b, float c, float h, float k, float u, float v, float w, int R);

ofEasyCam cam;

vector<vector<glm::vec3>> verticesList;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetColor(255);
	ofNoFill();
	ofSetLineWidth(0.5);
	ofEnableDepthTest();

	// Parameter reference by https://twitter.com/ru_sack/status/798308368007892992

	float a = 1.25;
	float b = 1.25;
	float c = 1.0;
	float h = 3.5;
	float k = 0;
	float w = 0.12;
	int R = 1;
	int scale = 100;

	float u_step = 0.15;
	int v_step = 15;
	for (float u = -35; u <= -1; u += u_step) {

		for (int v = 0; v <= 360; v += v_step) {
			
			vector<glm::vec3> vertices;
			vertices.push_back(this->make_shell_point(a, b, c, h, k, u + u_step * 0.5, (v + v_step * 0.5) * DEG_TO_RAD, w, R) * scale);
			vertices.push_back(this->make_shell_point(a, b, c, h, k, u + u_step * 0.5, (v - v_step * 0.5) * DEG_TO_RAD, w, R) * scale);
			vertices.push_back(this->make_shell_point(a, b, c, h, k, u - u_step * 0.5, (v - v_step * 0.5) * DEG_TO_RAD, w, R) * scale);
			vertices.push_back(this->make_shell_point(a, b, c, h, k, u - u_step * 0.5, (v + v_step * 0.5) * DEG_TO_RAD, w, R) * scale);
			this->verticesList.push_back(vertices);
		}
	}
}

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

}

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

	this->cam.begin();

	int sound_index = 0;
	for (auto vertices : this->verticesList) {

		ofBeginShape();
		for (auto vertex : vertices) {

			float noise_value = ofMap(ofNoise(vertex.x * 0.005, vertex.y * 0.005, vertex.z * 0.005, ofGetFrameNum() * 0.05), 0, 1, 0.8, 1.0);
			ofVertex(vertex * noise_value);
		}
		ofEndShape(true);
	}

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_shell_point(float a, float b, float c, float h, float k, float u, float v, float w, int R) {

	// 数学デッサン教室 描いて楽しむ数学たち 貝殻の形 shape of shell P.59

	float x = (h + a * cos(v)) * exp(w * u) * cos(c * u);
	float y = R * (h + a * cos(v)) * exp(w * u) * sin(c * u);
	float z = (k + b * sin(v)) * exp(w * 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(0);

ofSetColor(255);

ofNoFill();

ofSetLineWidth(0.5);

ofEnableDepthTest();

// Parameter reference by https://twitter.com/ru_sack/status/798308368007892992

float a = 1.25;

float b = 1.25;

float c = 1.0;

float h = 3.5;

float k = 0;

float w = 0.12;

int R = 1;

int scale = 100;

float u_step = 0.15;

int v_step = 15;

for (float u = -35; u <= -1; u += u_step) {

for (int v = 0; v <= 360; v += v_step) {

vector<glm::vec3> vertices;

vertices.push_back(this->make_shell_point(a, b, c, h, k, u + u_step * 0.5, (v + v_step * 0.5) * DEG_TO_RAD, w, R) * scale);

vertices.push_back(this->make_shell_point(a, b, c, h, k, u + u_step * 0.5, (v - v_step * 0.5) * DEG_TO_RAD, w, R) * scale);

vertices.push_back(this->make_shell_point(a, b, c, h, k, u - u_step * 0.5, (v - v_step * 0.5) * DEG_TO_RAD, w, R) * scale);

vertices.push_back(this->make_shell_point(a, b, c, h, k, u - u_step * 0.5, (v + v_step * 0.5) * DEG_TO_RAD, w, R) * scale);

this->verticesList.push_back(vertices);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

int sound_index = 0;

for (auto vertices : this->verticesList) {

ofBeginShape();

for (auto vertex : vertices) {

float noise_value = ofMap(ofNoise(vertex.x * 0.005, vertex.y * 0.005, vertex.z * 0.005, ofGetFrameNum() * 0.05), 0, 1, 0.8, 1.0);

ofVertex(vertex * noise_value);

}

ofEndShape(true);

}

this->cam.end();

}

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

glm::vec3 ofApp::make_shell_point(float a, float b, float c, float h, float k, float u, float v, float w, int R) {

// 数学デッサン教室描いて楽しむ数学たち貝殻の形 shape of shell P.59

float x = (h + a * cos(v)) * exp(w * u) * cos(c * u);

float y = R * (h + a * cos(v)) * exp(w * u) * sin(c * u);

float z = (k + b * sin(v)) * exp(w * u);

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190131

2019年1月30日2019年2月21日

Noise apple. openFrameworks

[ Video ]

[ About ]
りんご局面に面を貼ってノイズでバラバラにする大人の遊び。数式は「数学デッサン教室描いて楽しむ数学のかたち」から引用

Make surface on apple surface. And moving by Perlin 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) {};

	glm::vec3 make_apple_point(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_apple_point(float u, float v);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2.5);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	float scale = 30;
	ofColor color;

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

	for (int v = 0; v < 360; v += 6) {

		glm::vec2 noise_point = glm::vec2(cos(v * DEG_TO_RAD), sin(v * DEG_TO_RAD));
		float noise_value = ofNoise(noise_point.x, noise_point.y, ofGetFrameNum() * 0.03);
		scale = noise_value > 0.65 ? ofMap(noise_value, 0.65, 1, 20, 30) : 20;

		int tmp_v = v;
		for (int u = -180; u <= 180 - 6; u += 6) {
			
			ofSetColor(239, 39, 39);
			ofBeginShape();
			ofVertex(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);
			ofVertex(this->make_apple_point((u - 9) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);
			ofVertex(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale);
			ofVertex(this->make_apple_point((u + 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale);
			ofEndShape();

			ofSetColor(39);
			ofDrawLine(this->make_apple_point((u + 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale, this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);
			ofDrawLine(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale, this->make_apple_point((u - 9) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

			tmp_v += 6;
		}
	}	

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_apple_point(float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち リンゴ局面 apple surface P.33 

	float x = (4 + 3.8 * cos(u)) * cos(v);
	float y = (4 + 3.8 * cos(u)) * sin(v);
	float z = -5 * log10(1 - 0.315 * u) + 5 * sin(u) + 2 * cos(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);

ofSetLineWidth(2.5);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

float scale = 30;

ofColor color;

this->cam.begin();

ofRotateX(-90);

for (int v = 0; v < 360; v += 6) {

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

float noise_value = ofNoise(noise_point.x, noise_point.y, ofGetFrameNum() * 0.03);

scale = noise_value > 0.65 ? ofMap(noise_value, 0.65, 1, 20, 30) : 20;

int tmp_v = v;

for (int u = -180; u <= 180 - 6; u += 6) {

ofSetColor(239, 39, 39);

ofBeginShape();

ofVertex(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

ofVertex(this->make_apple_point((u - 9) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

ofVertex(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale);

ofVertex(this->make_apple_point((u + 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale);

ofEndShape();

ofSetColor(39);

ofDrawLine(this->make_apple_point((u + 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale, this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

ofDrawLine(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale, this->make_apple_point((u - 9) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

tmp_v += 6;

}

this->cam.end();

}

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

glm::vec3 ofApp::make_apple_point(float u, float v) {

// 数学デッサン教室描いて楽しむ数学たちリンゴ局面 apple surface P.33

float x = (4 + 3.8 * cos(u)) * cos(v);

float y = (4 + 3.8 * cos(u)) * sin(v);

float z = -5 * log10(1 - 0.315 * u) + 5 * sin(u) + 2 * cos(u);

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190130

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