circle – ページ 39 – プログラミング de 落描き

2022年4月10日

Circle or Rect. Draw by openFrameworks

[ Video ]

[ About ]
円か四角で埋める。

Circle or Rect.

[ Surce ]

#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);

	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::vec2 make_point(int len, int param);

ofEasyCam cam;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);
	ofSetColor(0);
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

}

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

	this->cam.begin();

	int len = 30;
	int width = len * 0.15;

	for (int x = -len * 12; x <= len * 12; x += len) {

		for (int y = -len * 12; y <= len * 12; y += len) {

			ofPushMatrix();
			ofTranslate(x, y, 0);

			ofBeginShape();
			for (int param = 0; param <= 100; param++) {

				int deg = param * 3.6 - 135;
				auto noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.015);

				vector<glm::vec3> vertices;
				if (noise_value > 0.5) {

					vertices.push_back(glm::vec3(this->make_point(len, param), width * 0.5));
					vertices.push_back(glm::vec3(this->make_point(len, param), width * 0.5));
				}
				else {

					vertices.push_back(glm::vec3(len * 0.4 * cos(deg * DEG_TO_RAD), len * 0.4 * sin(deg * DEG_TO_RAD), width * 0.5));
					vertices.push_back(glm::vec3(len * 0.4 * cos(deg * DEG_TO_RAD), len * 0.4 * sin(deg * DEG_TO_RAD), width * 0.5));
				}

				ofVertices(vertices);
			}
			ofEndShape();

			ofPopMatrix();
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
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());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetColor(0);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

int len = 30;

int width = len * 0.15;

for (int x = -len * 12; x <= len * 12; x += len) {

for (int y = -len * 12; y <= len * 12; y += len) {

ofPushMatrix();

ofTranslate(x, y, 0);

ofBeginShape();

for (int param = 0; param <= 100; param++) {

int deg = param * 3.6 - 135;

auto noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.015);

vector<glm::vec3> vertices;

if (noise_value > 0.5) {

vertices.push_back(glm::vec3(this->make_point(len, param), width * 0.5));

}

else {

vertices.push_back(glm::vec3(len * 0.4 * cos(deg * DEG_TO_RAD), len * 0.4 * sin(deg * DEG_TO_RAD), width * 0.5));

}

ofVertices(vertices);

}

ofEndShape();

ofPopMatrix();

}

this->cam.end();

}

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

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/Insta20220410

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年4月5日

Write down arrows. Draw by openFrameworks

[ Video ]

[ About ]
矢印を書きなぐる。

Write down arrows.

[ 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) {};

	void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);

	vector<float> source_deg_list;
	vector<float> target_deg_list;
	vector<ofColor> color_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 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) {};

void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);

vector<float> source_deg_list;

vector<float> target_deg_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);
}

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

	// 配色デザイン ソフトグリーン P114
	vector<ofColor> color_palette;
	color_palette.push_back(ofColor(97, 157, 110));
	color_palette.push_back(ofColor(119, 180, 106));
	color_palette.push_back(ofColor(143, 173, 91));
	color_palette.push_back(ofColor(145, 195, 161));
	color_palette.push_back(ofColor(93, 169, 145));
	color_palette.push_back(ofColor(255, 255, 255));
	color_palette.push_back(ofColor(131, 193, 215));
	color_palette.push_back(ofColor(249, 229, 128));

	auto source_deg = ofRandom(360);
	auto target_deg = source_deg + ofRandom(45, 315);

	this->source_deg_list.push_back(source_deg);
	this->target_deg_list.push_back(target_deg);
	this->color_list.push_back(color_palette[ofRandom(color_palette.size())]);

	while (this->source_deg_list.size() > 80) {

		this->source_deg_list.erase(this->source_deg_list.begin());
		this->target_deg_list.erase(this->target_deg_list.begin());
		this->color_list.erase(this->color_list.begin());
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	float radius = 250;


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

		auto base_location = glm::vec2(radius * cos(source_deg_list[i] * DEG_TO_RAD), radius * sin(source_deg_list[i] * DEG_TO_RAD));
		auto color = this->color_list[i];
		color.setHsb(color.getHue(), color.getSaturation(), ofMap(i, 0, 80, 0, 255));

		this->draw_arrow(base_location, glm::vec2(radius * cos(target_deg_list[i] * DEG_TO_RAD), radius * sin(target_deg_list[i] * DEG_TO_RAD)), 30, color);
	}
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

	auto angle = std::atan2(target.y - location.y, target.x - location.x);
	auto distance = glm::distance(target, location);

	ofPushMatrix();
	ofTranslate(target);

	ofSetColor(color);
	ofFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
	ofEndShape();

	ofSetColor(0);
	ofNoFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
	ofEndShape();

	ofPopMatrix();
}

//--------------------------------------------------------------
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(2);

}

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

void ofApp::update() {

// 配色デザインソフトグリーン P114

vector<ofColor> color_palette;

color_palette.push_back(ofColor(97, 157, 110));

color_palette.push_back(ofColor(119, 180, 106));

color_palette.push_back(ofColor(143, 173, 91));

color_palette.push_back(ofColor(145, 195, 161));

color_palette.push_back(ofColor(93, 169, 145));

color_palette.push_back(ofColor(255, 255, 255));

color_palette.push_back(ofColor(131, 193, 215));

color_palette.push_back(ofColor(249, 229, 128));

auto source_deg = ofRandom(360);

auto target_deg = source_deg + ofRandom(45, 315);

this->source_deg_list.push_back(source_deg);

this->target_deg_list.push_back(target_deg);

this->color_list.push_back(color_palette[ofRandom(color_palette.size())]);

while (this->source_deg_list.size() > 80) {

this->source_deg_list.erase(this->source_deg_list.begin());

this->target_deg_list.erase(this->target_deg_list.begin());

this->color_list.erase(this->color_list.begin());

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

float radius = 250;

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

auto base_location = glm::vec2(radius * cos(source_deg_list[i] * DEG_TO_RAD), radius * sin(source_deg_list[i] * DEG_TO_RAD));

auto color = this->color_list[i];

color.setHsb(color.getHue(), color.getSaturation(), ofMap(i, 0, 80, 0, 255));

this->draw_arrow(base_location, glm::vec2(radius * cos(target_deg_list[i] * DEG_TO_RAD), radius * sin(target_deg_list[i] * DEG_TO_RAD)), 30, color);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

auto angle = std::atan2(target.y - location.y, target.x - location.x);

auto distance = glm::distance(target, location);

ofPushMatrix();

ofTranslate(target);

ofSetColor(color);

ofFill();

ofBeginShape();

ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofEndShape();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofEndShape();

ofSetColor(0);

ofNoFill();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofEndShape();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220405

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年3月26日

Poisonous-looking. Draw by openFrameworks

[ Video ]

[ About ]
どくどくしいサークル。

Poisonous circle.

[ 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) {};

	ofMesh face, frame;
};

#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) {};

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(ofColor(44, 121, 191));

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

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

	ofSeedRandom(39);

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

	float deg_span = 1;
	float len = 2;

	for (float radius = 50; radius <= 270; radius += len) {

		for (float deg = 0; deg < 360; deg += deg_span) {

			auto noise_location = glm::vec2(cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD));
			auto prev_noise_location = glm::vec2(cos((deg - deg_span) * DEG_TO_RAD), sin((deg - deg_span) * DEG_TO_RAD));
			auto next_noise_location = glm::vec2(cos((deg + deg_span) * DEG_TO_RAD), sin((deg + deg_span) * DEG_TO_RAD));

			auto noise_value = ofNoise(glm::vec3(noise_location, radius * 0.045 - ofGetFrameNum() * 0.085));
			auto prev_noise_value = ofNoise(glm::vec3(prev_noise_location, radius * 0.045 - ofGetFrameNum() * 0.085));
			auto next_noise_value = ofNoise(glm::vec3(next_noise_location, radius * 0.045 - ofGetFrameNum() * 0.085));
			auto top_noise_value = ofNoise(glm::vec3(noise_location, (radius + len) * 0.045 - ofGetFrameNum() * 0.085));
			auto bottom_noise_value = ofNoise(glm::vec3(noise_location, (radius - len) * 0.045 - ofGetFrameNum() * 0.085));

			if (noise_value > 0.5) {

				vector<glm::vec3> vertices;
				vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
				vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
				vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));
				vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

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

				this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 2, this->face.getNumVertices() - 3);
				this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 3, this->face.getNumVertices() - 4);

				if (prev_noise_value <= 0.5) {

					this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2);
				}

				if (next_noise_value <= 0.5) {

					this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 4);
				}

				if (top_noise_value <= 0.5 || radius == 270) {

					this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);
				}

				if (bottom_noise_value <= 0.5 || radius == 50) {

					this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);
				}


			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofSetColor(ofColor(200, 59, 57));
	this->face.draw();

	ofSetColor(255);
	this->frame.draw();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(ofColor(44, 121, 191));

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

float deg_span = 1;

float len = 2;

for (float radius = 50; radius <= 270; radius += len) {

for (float deg = 0; deg < 360; deg += deg_span) {

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

auto prev_noise_location = glm::vec2(cos((deg - deg_span) * DEG_TO_RAD), sin((deg - deg_span) * DEG_TO_RAD));

auto next_noise_location = glm::vec2(cos((deg + deg_span) * DEG_TO_RAD), sin((deg + deg_span) * DEG_TO_RAD));

auto noise_value = ofNoise(glm::vec3(noise_location, radius * 0.045 - ofGetFrameNum() * 0.085));

auto prev_noise_value = ofNoise(glm::vec3(prev_noise_location, radius * 0.045 - ofGetFrameNum() * 0.085));

auto next_noise_value = ofNoise(glm::vec3(next_noise_location, radius * 0.045 - ofGetFrameNum() * 0.085));

auto top_noise_value = ofNoise(glm::vec3(noise_location, (radius + len) * 0.045 - ofGetFrameNum() * 0.085));

auto bottom_noise_value = ofNoise(glm::vec3(noise_location, (radius - len) * 0.045 - ofGetFrameNum() * 0.085));

if (noise_value > 0.5) {

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

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

this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 3, this->face.getNumVertices() - 4);

if (prev_noise_value <= 0.5) {

this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2);

}

if (next_noise_value <= 0.5) {

this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 4);

}

if (top_noise_value <= 0.5 || radius == 270) {

this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);

}

if (bottom_noise_value <= 0.5 || radius == 50) {

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSetColor(ofColor(200, 59, 57));

this->face.draw();

ofSetColor(255);

this->frame.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220326

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