noise – ページ 54 – プログラミング de 落描き

2022年12月28日

Log of random walk. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォークのログ。

[ 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) {};

	void setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float size, ofColor color);
	void setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth, ofColor color);

	ofEasyCam cam;
	ofMesh face, frame;

	vector<glm::vec3> log_list;

	float len;
	vector<glm::vec3> box_location_list;
	vector<float> alpah_param_list;
};

#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) {};

void setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float size, ofColor color);

void setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth, ofColor color);

ofEasyCam cam;

ofMesh face, frame;

vector<glm::vec3> log_list;

float len;

vector<glm::vec3> box_location_list;

vector<float> alpah_param_list;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

	this->len = 10;
	for (auto x = -150; x <= 150; x += this->len) {

		for (auto y = -150; y <= 150; y += this->len) {

			for (auto z = -150; z <= 150; z += this->len) {

				this->box_location_list.push_back(glm::vec3(x, y, z));
				this->alpah_param_list.push_back(255);
			}
		}
	}

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

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

	ofSeedRandom(39);

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

	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
	auto noise_location = glm::vec3(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.01), 0, 1, -200, 200), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.01), 0, 1, -200, 200), ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.01), 0, 1, -200, 200));
	this->log_list.push_back(noise_location);
	while (this->log_list.size() > 30) { this->log_list.erase(this->log_list.begin()); }

	for (int i = 0; i < this->box_location_list.size(); i++) {

		if (glm::distance(this->box_location_list[i], noise_location) < 30) {

			this->alpah_param_list[i] = 0;
		}

		if (this->alpah_param_list[i] > 200) {

			//this->setBoxToMesh(this->face, this->frame, this->box_location_list[i], this->len, ofColor(39, ofMap(this->alpah_param_list[i], 200, 255, 0, 255)));
		}
		else {

			this->setBoxToMesh(this->face, this->frame, this->box_location_list[i], this->len, ofColor(0, ofMap(this->alpah_param_list[i], 0, 200, 255, 0)));
		}

		this->alpah_param_list[i] = this->alpah_param_list[i] >= 255 ? 255 : this->alpah_param_list[i] + 1.0;
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.85);
	ofRotateX(ofGetFrameNum() * 0.5);

	/*
	ofNoFill();
	ofBeginShape();
	ofVertices(this->log_list);
	ofEndShape();

	ofSetColor(255, 0, 0);
	ofFill();
	ofDrawSphere(this->log_list.back(), 10);
	*/

	this->face.drawFaces();
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float size, ofColor color) {

	this->setBoxToMesh(face_target, frame_target, location, size, size, size, color);
}

//--------------------------------------------------------------
void ofApp::setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth, ofColor color) {

	int index = face_target.getVertices().size();

	face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * 0.5 * 0.99, depth * -0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * 0.5 * 0.99, depth * -0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * 0.5 * 0.99, depth * 0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * 0.5 * 0.99, depth * 0.5 * 0.99));

	face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * -0.5 * 0.99, depth * -0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * -0.5 * 0.99, depth * -0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * -0.5 * 0.99, depth * 0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * -0.5 * 0.99, depth * 0.5 * 0.99));

	face_target.addIndex(index + 0); face_target.addIndex(index + 1); face_target.addIndex(index + 2);
	face_target.addIndex(index + 0); face_target.addIndex(index + 2); face_target.addIndex(index + 3);

	face_target.addIndex(index + 4); face_target.addIndex(index + 5); face_target.addIndex(index + 6);
	face_target.addIndex(index + 4); face_target.addIndex(index + 6); face_target.addIndex(index + 7);

	face_target.addIndex(index + 0); face_target.addIndex(index + 4); face_target.addIndex(index + 1);
	face_target.addIndex(index + 4); face_target.addIndex(index + 5); face_target.addIndex(index + 1);

	face_target.addIndex(index + 1); face_target.addIndex(index + 5); face_target.addIndex(index + 6);
	face_target.addIndex(index + 6); face_target.addIndex(index + 2); face_target.addIndex(index + 1);

	face_target.addIndex(index + 2); face_target.addIndex(index + 6); face_target.addIndex(index + 7);
	face_target.addIndex(index + 7); face_target.addIndex(index + 3); face_target.addIndex(index + 2);

	face_target.addIndex(index + 3); face_target.addIndex(index + 7); face_target.addIndex(index + 4);
	face_target.addIndex(index + 4); face_target.addIndex(index + 0); face_target.addIndex(index + 3);

	frame_target.addVertex(location + glm::vec3(width * -0.5, height * 0.5, depth * -0.5));
	frame_target.addVertex(location + glm::vec3(width * 0.5, height * 0.5, depth * -0.5));
	frame_target.addVertex(location + glm::vec3(width * 0.5, height * 0.5, depth * 0.5));
	frame_target.addVertex(location + glm::vec3(width * -0.5, height * 0.5, depth * 0.5));

	frame_target.addVertex(location + glm::vec3(width * -0.5, height * -0.5, depth * -0.5));
	frame_target.addVertex(location + glm::vec3(width * 0.5, height * -0.5, depth * -0.5));
	frame_target.addVertex(location + glm::vec3(width * 0.5, height * -0.5, depth * 0.5));
	frame_target.addVertex(location + glm::vec3(width * -0.5, height * -0.5, depth * 0.5));

	frame_target.addIndex(index + 0); frame_target.addIndex(index + 1);
	frame_target.addIndex(index + 1); frame_target.addIndex(index + 2);
	frame_target.addIndex(index + 2); frame_target.addIndex(index + 3);
	frame_target.addIndex(index + 3); frame_target.addIndex(index + 0);

	frame_target.addIndex(index + 4); frame_target.addIndex(index + 5);
	frame_target.addIndex(index + 5); frame_target.addIndex(index + 6);
	frame_target.addIndex(index + 6); frame_target.addIndex(index + 7);
	frame_target.addIndex(index + 7); frame_target.addIndex(index + 4);

	frame_target.addIndex(index + 0); frame_target.addIndex(index + 4);
	frame_target.addIndex(index + 1); frame_target.addIndex(index + 5);
	frame_target.addIndex(index + 2); frame_target.addIndex(index + 6);
	frame_target.addIndex(index + 3); frame_target.addIndex(index + 7);

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

		face_target.addColor(color);
		frame_target.addColor(ofColor(239));
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofEnableDepthTest();

this->len = 10;

for (auto x = -150; x <= 150; x += this->len) {

for (auto y = -150; y <= 150; y += this->len) {

for (auto z = -150; z <= 150; z += this->len) {

this->box_location_list.push_back(glm::vec3(x, y, z));

this->alpah_param_list.push_back(255);

}

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

auto noise_location = glm::vec3(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.01), 0, 1, -200, 200), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.01), 0, 1, -200, 200), ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.01), 0, 1, -200, 200));

this->log_list.push_back(noise_location);

while (this->log_list.size() > 30) { this->log_list.erase(this->log_list.begin()); }

for (int i = 0; i < this->box_location_list.size(); i++) {

if (glm::distance(this->box_location_list[i], noise_location) < 30) {

this->alpah_param_list[i] = 0;

}

if (this->alpah_param_list[i] > 200) {

//this->setBoxToMesh(this->face, this->frame, this->box_location_list[i], this->len, ofColor(39, ofMap(this->alpah_param_list[i], 200, 255, 0, 255)));

}

else {

this->setBoxToMesh(this->face, this->frame, this->box_location_list[i], this->len, ofColor(0, ofMap(this->alpah_param_list[i], 0, 200, 255, 0)));

}

this->alpah_param_list[i] = this->alpah_param_list[i] >= 255 ? 255 : this->alpah_param_list[i] + 1.0;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.85);

ofRotateX(ofGetFrameNum() * 0.5);

ofNoFill();

ofBeginShape();

ofVertices(this->log_list);

ofEndShape();

ofSetColor(255, 0, 0);

ofFill();

ofDrawSphere(this->log_list.back(), 10);

this->face.drawFaces();

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float size, ofColor color) {

this->setBoxToMesh(face_target, frame_target, location, size, size, size, color);

}

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

void ofApp::setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth, ofColor color) {

int index = face_target.getVertices().size();

face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * 0.5 * 0.99, depth * -0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * 0.5 * 0.99, depth * -0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * 0.5 * 0.99, depth * 0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * 0.5 * 0.99, depth * 0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * -0.5 * 0.99, depth * -0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * -0.5 * 0.99, depth * -0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * -0.5 * 0.99, depth * 0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * -0.5 * 0.99, depth * 0.5 * 0.99));

face_target.addIndex(index + 0); face_target.addIndex(index + 1); face_target.addIndex(index + 2);

face_target.addIndex(index + 0); face_target.addIndex(index + 2); face_target.addIndex(index + 3);

face_target.addIndex(index + 4); face_target.addIndex(index + 5); face_target.addIndex(index + 6);

face_target.addIndex(index + 4); face_target.addIndex(index + 6); face_target.addIndex(index + 7);

face_target.addIndex(index + 0); face_target.addIndex(index + 4); face_target.addIndex(index + 1);

face_target.addIndex(index + 4); face_target.addIndex(index + 5); face_target.addIndex(index + 1);

face_target.addIndex(index + 1); face_target.addIndex(index + 5); face_target.addIndex(index + 6);

face_target.addIndex(index + 6); face_target.addIndex(index + 2); face_target.addIndex(index + 1);

face_target.addIndex(index + 2); face_target.addIndex(index + 6); face_target.addIndex(index + 7);

face_target.addIndex(index + 7); face_target.addIndex(index + 3); face_target.addIndex(index + 2);

face_target.addIndex(index + 3); face_target.addIndex(index + 7); face_target.addIndex(index + 4);

face_target.addIndex(index + 4); face_target.addIndex(index + 0); face_target.addIndex(index + 3);

frame_target.addVertex(location + glm::vec3(width * -0.5, height * 0.5, depth * -0.5));

frame_target.addVertex(location + glm::vec3(width * 0.5, height * 0.5, depth * -0.5));

frame_target.addVertex(location + glm::vec3(width * 0.5, height * 0.5, depth * 0.5));

frame_target.addVertex(location + glm::vec3(width * -0.5, height * 0.5, depth * 0.5));

frame_target.addVertex(location + glm::vec3(width * -0.5, height * -0.5, depth * -0.5));

frame_target.addVertex(location + glm::vec3(width * 0.5, height * -0.5, depth * -0.5));

frame_target.addVertex(location + glm::vec3(width * 0.5, height * -0.5, depth * 0.5));

frame_target.addVertex(location + glm::vec3(width * -0.5, height * -0.5, depth * 0.5));

frame_target.addIndex(index + 0); frame_target.addIndex(index + 1);

frame_target.addIndex(index + 1); frame_target.addIndex(index + 2);

frame_target.addIndex(index + 2); frame_target.addIndex(index + 3);

frame_target.addIndex(index + 3); frame_target.addIndex(index + 0);

frame_target.addIndex(index + 4); frame_target.addIndex(index + 5);

frame_target.addIndex(index + 5); frame_target.addIndex(index + 6);

frame_target.addIndex(index + 6); frame_target.addIndex(index + 7);

frame_target.addIndex(index + 7); frame_target.addIndex(index + 4);

frame_target.addIndex(index + 0); frame_target.addIndex(index + 4);

frame_target.addIndex(index + 1); frame_target.addIndex(index + 5);

frame_target.addIndex(index + 2); frame_target.addIndex(index + 6);

frame_target.addIndex(index + 3); frame_target.addIndex(index + 7);

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

face_target.addColor(color);

frame_target.addColor(ofColor(239));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221228

2022年12月27日

Noise pattern. Draw by openFrameworks

[ Video ]

[ About ]
ノイズ柄。

[ Source ]

#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 "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(30);
	ofSetWindowTitle("openFrameworks");

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

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

	ofSeedRandom(39);
}

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

	int span = 15;
	for (int z = 0; z > -span; z -= span) {

		auto noise_seed = ofRandom(1000);
		for (int x = 0; x < 720; x += span) {

			for (int y = 0; y < 720; y += span) {

				ofPushMatrix();
				ofTranslate(x, y, z);

				auto noise_value = ofNoise(noise_seed, x * 0.0035, y * 0.0035, ofGetFrameNum() * 0.005);

				if (noise_value > 0.43 && noise_value <= 0.48) {
				
					auto power = ofMap(noise_value, 0.43, 0.48, 1, 0);
					ofRotateZ(ofRandom(1000) * power);
					ofRotateY(ofRandom(1000) * power);
					ofRotateX(ofRandom(1000) * power);

					ofSetColor(0);
					ofFill();
					ofDrawBox(ofMap(noise_value, 0.43, 0.48, 0, span));

					ofSetColor(255);
					ofNoFill();
					ofDrawBox(ofMap(noise_value, 0.43, 0.48, 0, span));
				}

				if (noise_value > 0.48 && noise_value < 0.52) {

					ofSetColor(0);
					ofFill();
					ofDrawBox(span);

					ofSetColor(255);
					ofNoFill();
					ofDrawBox(span);
				}

				if (noise_value > 0.52 && noise_value <= 0.57) {

					auto power = ofMap(noise_value, 0.52, 0.57, 0, 1);
					ofRotateZ(ofRandom(1000) * power);
					ofRotateY(ofRandom(1000) * power);
					ofRotateX(ofRandom(1000) * power);

					ofSetColor(0);
					ofFill();
					ofDrawBox(ofMap(noise_value, 0.57, 0.52, 0, span));

					ofSetColor(255);
					ofNoFill();
					ofDrawBox(ofMap(noise_value, 0.57, 0.52, 0, span));
				}

				ofPopMatrix();
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int span = 15;

for (int z = 0; z > -span; z -= span) {

auto noise_seed = ofRandom(1000);

for (int x = 0; x < 720; x += span) {

for (int y = 0; y < 720; y += span) {

ofPushMatrix();

ofTranslate(x, y, z);

auto noise_value = ofNoise(noise_seed, x * 0.0035, y * 0.0035, ofGetFrameNum() * 0.005);

if (noise_value > 0.43 && noise_value <= 0.48) {

auto power = ofMap(noise_value, 0.43, 0.48, 1, 0);

ofRotateZ(ofRandom(1000) * power);

ofRotateY(ofRandom(1000) * power);

ofRotateX(ofRandom(1000) * power);

ofSetColor(0);

ofFill();

ofDrawBox(ofMap(noise_value, 0.43, 0.48, 0, span));

ofSetColor(255);

ofNoFill();

ofDrawBox(ofMap(noise_value, 0.43, 0.48, 0, span));

}

if (noise_value > 0.48 && noise_value < 0.52) {

ofSetColor(0);

ofFill();

ofDrawBox(span);

ofSetColor(255);

ofNoFill();

ofDrawBox(span);

}

if (noise_value > 0.52 && noise_value <= 0.57) {

auto power = ofMap(noise_value, 0.52, 0.57, 0, 1);

ofRotateZ(ofRandom(1000) * power);

ofRotateY(ofRandom(1000) * power);

ofRotateX(ofRandom(1000) * power);

ofSetColor(0);

ofFill();

ofDrawBox(ofMap(noise_value, 0.57, 0.52, 0, span));

ofSetColor(255);

ofNoFill();

ofDrawBox(ofMap(noise_value, 0.57, 0.52, 0, span));

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221227

2022年12月25日

2022 Xmas. Draw by openFrameworks

[ Video ]

[ About ]
2022 Happy X’mas.

[ 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;
	ofMesh mesh;

	ofTrueTypeFont font;
};

#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;

ofMesh mesh;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(1.2);
	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 100, true, true, true);
}

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

	ofSeedRandom(39);

	vector<float> min_distance_list;
	this->mesh.clear();

	for (int i = 0; i < 1800; i++) {

		auto vertex = glm::vec3(
			ofRandom(-200, 200) + ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -20, 20),
			(int)(ofRandom(400) + ofGetFrameNum() * ofRandom(1, 3)) % 400 - 200,
			ofRandom(-200, 200) + ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -20, 20)
		);

		this->mesh.addVertex(vertex);
		min_distance_list.push_back(20);
	}

	string word = "Xmas";
	auto path_list = font.getStringAsPoints(word, true, false);

	for (auto path : path_list) {

		auto outline = path.getOutline();

		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			outline[outline_index] = outline[outline_index].getResampledBySpacing(15);
			auto vertices = outline[outline_index].getVertices();

			for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) {

				auto location = glm::vec3(vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, vertices[vertices_index].y + this->font.stringHeight(word) * 0.5, 0);
				this->mesh.addVertex(location);
			}

		}
	}

	for (int i = 0; i < this->mesh.getNumVertices(); i++) {

		for (int k = 0; k < this->mesh.getNumVertices(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));
			if (distance <= 20) {

				this->mesh.addIndex(i);
				this->mesh.addIndex(k);

				if (distance < min_distance_list[i]) {

					min_distance_list[i] = distance;
				}
			}
		}

		this->mesh.addColor(ofColor(255, ofMap(min_distance_list[i], 0, 20, 255, 0)));
	}
}

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

	this->cam.begin();
	ofRotateX(180);
	ofRotateY(10 * sin(ofGetFrameNum() * 0.035));

	this->mesh.draw();

	for (int i = 0; i < this->mesh.getNumVertices(); i++) {

		ofSetColor(this->mesh.getColor(i));
		ofDrawSphere(this->mesh.getVertex(i), 1.5);
	}

	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

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

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

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


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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1.2);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 100, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

vector<float> min_distance_list;

this->mesh.clear();

for (int i = 0; i < 1800; i++) {

auto vertex = glm::vec3(

ofRandom(-200, 200) + ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -20, 20),

(int)(ofRandom(400) + ofGetFrameNum() * ofRandom(1, 3)) % 400 - 200,

ofRandom(-200, 200) + ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -20, 20)

);

this->mesh.addVertex(vertex);

min_distance_list.push_back(20);

}

string word = "Xmas";

auto path_list = font.getStringAsPoints(word, true, false);

for (auto path : path_list) {

auto outline = path.getOutline();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

outline[outline_index] = outline[outline_index].getResampledBySpacing(15);

auto vertices = outline[outline_index].getVertices();

for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) {

auto location = glm::vec3(vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, vertices[vertices_index].y + this->font.stringHeight(word) * 0.5, 0);

this->mesh.addVertex(location);

}

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

for (int k = 0; k < this->mesh.getNumVertices(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));

if (distance <= 20) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

if (distance < min_distance_list[i]) {

min_distance_list[i] = distance;

}

this->mesh.addColor(ofColor(255, ofMap(min_distance_list[i], 0, 20, 255, 0)));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofRotateY(10 * sin(ofGetFrameNum() * 0.035));

this->mesh.draw();

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

ofSetColor(this->mesh.getColor(i));

ofDrawSphere(this->mesh.getVertex(i), 1.5);

}

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

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

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

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

auto 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/Insta20221225

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