noise – ページ 133 – プログラミング de 落描き

2021年12月28日

Lines on square. Draw by openFrameworks

[ Video ]

[ About ]
正方形の線を結ぶ。

Connect the square lines.

[ 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 make_point(int len, int param);
};

#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 make_point(int len, int param);

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetLineWidth(2);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	int span = 200;
	for (int x = -span; x <= span; x += span) {

		for (int y = -span; y <= span; y += span) {

			ofPushMatrix();
			ofTranslate(x, y);

			for (int len = 50; len < 180; len += 30) {

				auto noise_seed = ofRandom(1000);
				for (int param = 100; param < 200; param += 1) {

					auto location = this->make_point(len, param);
					auto next_location = this->make_point(len, param + 1);

					auto noise_value = ofNoise(glm::vec4(noise_seed, this->make_point(120, param) * 0.0085, ofGetFrameNum() * 0.015));
					auto prev_noise_value = ofNoise(glm::vec4(noise_seed, this->make_point(120, param - 1) * 0.0085, ofGetFrameNum() * 0.015));
					auto next_noise_value = ofNoise(glm::vec4(noise_seed, this->make_point(120, param + 1) * 0.0085, ofGetFrameNum() * 0.015));

					if (noise_value > 0.5) {

						ofSetColor(255);
						ofDrawLine(location, next_location);

						if (prev_noise_value <= 0.5) {

							ofFill();
							ofDrawCircle(location, 4);
						}

						if (next_noise_value <= 0.5) {

							ofFill();
							ofSetColor(0);
							ofDrawCircle(next_location, 4);

							ofNoFill();
							ofSetColor(255);
							ofDrawCircle(next_location, 4);
						}
					}
				}
			}

			ofPopMatrix();
		}
	}
}

//--------------------------------------------------------------
glm::vec2 ofApp::make_point(int len, int param) {

	param = param % 100;
	if (param < 25) {

		return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);
	}
	else if (param < 50) {

		return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));
	}
	else if (param < 75) {

		return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);
	}
	else {

		return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));
	}
}

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

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

100

101

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

int span = 200;

for (int x = -span; x <= span; x += span) {

for (int y = -span; y <= span; y += span) {

ofPushMatrix();

ofTranslate(x, y);

for (int len = 50; len < 180; len += 30) {

auto noise_seed = ofRandom(1000);

for (int param = 100; param < 200; param += 1) {

auto location = this->make_point(len, param);

auto next_location = this->make_point(len, param + 1);

auto noise_value = ofNoise(glm::vec4(noise_seed, this->make_point(120, param) * 0.0085, ofGetFrameNum() * 0.015));

auto prev_noise_value = ofNoise(glm::vec4(noise_seed, this->make_point(120, param - 1) * 0.0085, ofGetFrameNum() * 0.015));

auto next_noise_value = ofNoise(glm::vec4(noise_seed, this->make_point(120, param + 1) * 0.0085, ofGetFrameNum() * 0.015));

if (noise_value > 0.5) {

ofSetColor(255);

ofDrawLine(location, next_location);

if (prev_noise_value <= 0.5) {

ofFill();

ofDrawCircle(location, 4);

}

if (next_noise_value <= 0.5) {

ofFill();

ofSetColor(0);

ofDrawCircle(next_location, 4);

ofNoFill();

ofSetColor(255);

ofDrawCircle(next_location, 4);

}

ofPopMatrix();

}

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

glm::vec2 ofApp::make_point(int len, int param) {

param = param % 100;

if (param < 25) {

return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);

}

else if (param < 50) {

return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));

}

else if (param < 75) {

return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);

}

else {

return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211228

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2021年12月27日2021年12月27日

Break out the shell. Draw by openFrameworks

[ Video ]

[ About ]
ノイズの値で変化する球体と変化しない球体。

Spheres that change with the value of noise and spheres that do not change.

[ 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;
	vector<ofMeshFace> triangle_list;
	ofMesh mesh, yolk;
};

#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;

vector<ofMeshFace> triangle_list;

ofMesh mesh, yolk;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);
	ofEnableDepthTest();
	
	auto ico_sphere = ofIcoSpherePrimitive(250, 5);
	this->triangle_list = ico_sphere.getMesh().getUniqueFaces();
}

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

	this->mesh.clear();
	this->yolk.clear();

	for (auto& triangle : this->triangle_list) {

		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

		vector<glm::vec3> vertices;
		vertices.push_back(triangle.getVertex(0));
		vertices.push_back(triangle.getVertex(1));
		vertices.push_back(triangle.getVertex(2));

		for (auto& vertex : vertices) {

			auto noise_value = 0.28 + ofNoise(glm::vec4(vertex * 0.01, ofGetFrameNum() * 0.0065));
			noise_value = pow(noise_value, 2);
			auto noise_radius = 280 * noise_value;
			vertex = glm::normalize(vertex) * noise_radius;
		}

		this->yolk.addVertices(vertices);
		this->yolk.addTriangle(this->yolk.getNumVertices() - 1, this->yolk.getNumVertices() - 2, this->yolk.getNumVertices() - 3);
	}

	for (auto& triangle : this->triangle_list) {

		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		auto noise_value = 0.28 + ofNoise(glm::vec4(avg * 0.01, ofGetFrameNum() * 0.0065));
		noise_value = pow(noise_value, 2);
		auto noise_radius = 280 * noise_value;
		
		if (noise_radius < 180) {

			this->mesh.addVertex(triangle.getVertex(0));
			this->mesh.addVertex(triangle.getVertex(1));
			this->mesh.addVertex(triangle.getVertex(2));
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * -0.3333);

	ofSetColor(255);
	
	this->mesh.draw();

	ofSetLineWidth(1);
	this->yolk.drawWireframe();

	ofSetColor(0);

	ofSetLineWidth(2);
	this->mesh.drawWireframe();

	this->yolk.draw();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(250, 5);

this->triangle_list = ico_sphere.getMesh().getUniqueFaces();

}

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

void ofApp::update() {

this->mesh.clear();

this->yolk.clear();

for (auto& triangle : this->triangle_list) {

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

vector<glm::vec3> vertices;

vertices.push_back(triangle.getVertex(0));

vertices.push_back(triangle.getVertex(1));

vertices.push_back(triangle.getVertex(2));

for (auto& vertex : vertices) {

auto noise_value = 0.28 + ofNoise(glm::vec4(vertex * 0.01, ofGetFrameNum() * 0.0065));

noise_value = pow(noise_value, 2);

auto noise_radius = 280 * noise_value;

vertex = glm::normalize(vertex) * noise_radius;

}

this->yolk.addVertices(vertices);

this->yolk.addTriangle(this->yolk.getNumVertices() - 1, this->yolk.getNumVertices() - 2, this->yolk.getNumVertices() - 3);

}

for (auto& triangle : this->triangle_list) {

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

auto noise_value = 0.28 + ofNoise(glm::vec4(avg * 0.01, ofGetFrameNum() * 0.0065));

noise_value = pow(noise_value, 2);

auto noise_radius = 280 * noise_value;

if (noise_radius < 180) {

this->mesh.addVertex(triangle.getVertex(0));

this->mesh.addVertex(triangle.getVertex(1));

this->mesh.addVertex(triangle.getVertex(2));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * -0.3333);

ofSetColor(255);

this->mesh.draw();

ofSetLineWidth(1);

this->yolk.drawWireframe();

ofSetColor(0);

ofSetLineWidth(2);

this->mesh.drawWireframe();

this->yolk.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211227

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2021年12月25日

Symmetrical ribbons flower. Draw by openFrameworks

[ Video ]

[ About ]
リボンを対称に描写する。

Describe the ribbons symmetrically.

[ 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;
	ofMesh face, line;
};

#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;

ofMesh face, line;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableDepthTest();
	ofSetLineWidth(2);

	this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

	this->face.clear();
	this->line.clear();

	auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
	int start_index = this->face.getNumVertices();
	for (float x = 128; x < 255; x += 1) {

		float next_x = x + 1;
		int index = this->face.getNumVertices();

		float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

		float angle_y = ofMap(ofNoise(noise_seed.y, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

		float next_angle_x = ofMap(ofNoise(noise_seed.x, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x, glm::vec3(1, 0, 0));

		float next_angle_y = ofMap(ofNoise(noise_seed.y, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y, glm::vec3(0, 1, 0));

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec4(x, 10, 0, 0) * rotation_y * rotation_x);
		vertices.push_back(glm::vec4(next_x, 10, 0, 0)* next_rotation_y* next_rotation_x);
		vertices.push_back(glm::vec4(next_x, -10, 0, 0) * next_rotation_y * next_rotation_x);
		vertices.push_back(glm::vec4(x, -10, 0, 0) * rotation_y * rotation_x);

		this->face.addVertices(vertices);
		this->line.addVertices(vertices);

		auto color = ofColor();
		auto next_color = ofColor();

		color.setHsb(ofMap((int)(x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);
		next_color.setHsb(ofMap((int)(next_x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

		this->face.addColor(color);
		this->face.addColor(next_color);
		this->face.addColor(next_color);
		this->face.addColor(color);

		this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);
		this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

		this->line.addIndex(index + 0); this->line.addIndex(index + 1);
		this->line.addIndex(index + 2); this->line.addIndex(index + 3);
	}

	this->line.addIndex(start_index + 0); this->line.addIndex(start_index + 3);
	this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);
}

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

	this->cam.begin();
	ofRotateY(270);

	for (int i = 0; i < 8; i++) {

		ofRotateX(45);

		this->line.drawWireframe();
		this->face.draw();
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

ofSetLineWidth(2);

this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

int start_index = this->face.getNumVertices();

for (float x = 128; x < 255; x += 1) {

float next_x = x + 1;

int index = this->face.getNumVertices();

float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

float angle_y = ofMap(ofNoise(noise_seed.y, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

float next_angle_x = ofMap(ofNoise(noise_seed.x, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x, glm::vec3(1, 0, 0));

float next_angle_y = ofMap(ofNoise(noise_seed.y, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y, glm::vec3(0, 1, 0));

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x, 10, 0, 0) * rotation_y * rotation_x);

vertices.push_back(glm::vec4(next_x, 10, 0, 0)* next_rotation_y* next_rotation_x);

vertices.push_back(glm::vec4(next_x, -10, 0, 0) * next_rotation_y * next_rotation_x);

vertices.push_back(glm::vec4(x, -10, 0, 0) * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->line.addVertices(vertices);

auto color = ofColor();

auto next_color = ofColor();

color.setHsb(ofMap((int)(x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

next_color.setHsb(ofMap((int)(next_x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

this->face.addColor(color);

this->face.addColor(next_color);

this->face.addColor(color);

this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);

this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

this->line.addIndex(index + 0); this->line.addIndex(index + 1);

this->line.addIndex(index + 2); this->line.addIndex(index + 3);

}

this->line.addIndex(start_index + 0); this->line.addIndex(start_index + 3);

this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(270);

for (int i = 0; i < 8; i++) {

ofRotateX(45);

this->line.drawWireframe();

this->face.draw();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211225

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