2021年5月 – ページ 6 – プログラミング de 落描き

2021年5月16日

10 PRINT Vortex. Draw by openFrameworks

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10 PRINT Vortex.

[ 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);

	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(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(3);
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	int span = 15;
	int draw_param = ofRandom(1000);
	vector<glm::vec2> location_list = { glm::vec2(-220, -220), glm::vec2(0, -220), glm::vec2(220, -220),
	glm::vec2(-220, 0), glm::vec2(220, 0) ,
	glm::vec2(-220, 220), glm::vec2(0, 220), glm::vec2(220, 220) };
	vector<float> rotate_list = { 180, 180, 270, 90, 270, 90, 0, 0 };

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

		ofPushMatrix();
		ofTranslate(location_list[i]);
		ofRotateZ(rotate_list[i]);

		for (auto x = -90; x <= 90; x += span) {

			for (int y = -90; y <= 90; y += span) {

				auto draw = ofNoise(draw_param, location_list[i].x + x * 0.0035 + ofGetFrameNum() * 0.01, location_list[i].y + y * 0.0035);
				if (draw < 0.45) continue;
				
				ofPushMatrix();
				ofTranslate(x, y, 0);

				auto noise_value = ofNoise(location_list[i].x + x * 0.005 + ofGetFrameNum() * 0.01, location_list[i].y + y * 0.005);
				auto start_param = noise_value < 0.5 ? 0 : 25;

				auto start = this->make_point(span, start_param);
				auto end = this->make_point(span, start_param + 50);

				ofDrawLine(start, end);
				ofDrawCircle(start, 4);
				ofDrawCircle(end, 4);

				ofPopMatrix();
			}
		}

		ofNoFill();
		ofDrawRectangle(glm::vec2(), 180 + 15, 180 + 15);
		ofFill();
		
		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());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(3);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

int span = 15;

int draw_param = ofRandom(1000);

vector<glm::vec2> location_list = { glm::vec2(-220, -220), glm::vec2(0, -220), glm::vec2(220, -220),

glm::vec2(-220, 0), glm::vec2(220, 0) ,

glm::vec2(-220, 220), glm::vec2(0, 220), glm::vec2(220, 220) };

vector<float> rotate_list = { 180, 180, 270, 90, 270, 90, 0, 0 };

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

ofPushMatrix();

ofTranslate(location_list[i]);

ofRotateZ(rotate_list[i]);

for (auto x = -90; x <= 90; x += span) {

for (int y = -90; y <= 90; y += span) {

auto draw = ofNoise(draw_param, location_list[i].x + x * 0.0035 + ofGetFrameNum() * 0.01, location_list[i].y + y * 0.0035);

if (draw < 0.45) continue;

ofPushMatrix();

ofTranslate(x, y, 0);

auto noise_value = ofNoise(location_list[i].x + x * 0.005 + ofGetFrameNum() * 0.01, location_list[i].y + y * 0.005);

auto start_param = noise_value < 0.5 ? 0 : 25;

auto start = this->make_point(span, start_param);

auto end = this->make_point(span, start_param + 50);

ofDrawLine(start, end);

ofDrawCircle(start, 4);

ofDrawCircle(end, 4);

ofPopMatrix();

}

ofNoFill();

ofDrawRectangle(glm::vec2(), 180 + 15, 180 + 15);

ofFill();

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/Insta20210516

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2021年5月15日

Rotate rotate box. Draw by openFrameworks

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[ About ]
Rotate rotate box.

[ 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(60);
	ofSetWindowTitle("openFrameworks");

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

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

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

	ofSeedRandom(39);

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

	auto log = 13;

	for (int k = 0; k < 2; k++) {

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

		for (int deg = 0; deg < 360; deg += 45) {

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

				int face_index = this->face.getNumVertices();
				int line_index = this->line.getNumVertices();

				auto base_radius = ofMap(ofNoise(base_radius_seed, (ofGetFrameNum() + i) * 0.01), 0, 1, 50, 450);
				auto len = ofMap(base_radius, 50, 450, 10, 80);

				auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + i) * -0.0065), 0, 1, -PI, PI), glm::vec3(1, 0, 0));
				auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + i) * -0.0065), 0, 1, -PI, PI), glm::vec3(0, 1, 0));
				auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed.z, (ofGetFrameNum() + i) * -0.0065), 0, 1, -PI, PI), glm::vec3(0, 0, 1));

				auto base_rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum() + i) * -0.0035), 0, 1, -PI, PI), glm::vec3(1, 0, 0));
				auto base_rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum() + i) * -0.0035), 0, 1, -PI, PI), glm::vec3(0, 1, 0));
				auto base_rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum() + i) * -0.0035), 0, 1, -PI, PI), glm::vec3(0, 0, 1));

				vector<glm::vec3> vertices;
				vertices.push_back(glm::vec3(len * -0.5, len * 0.5, len * -0.5));
				vertices.push_back(glm::vec3(len * 0.5, len * 0.5, len * -0.5));
				vertices.push_back(glm::vec3(len * 0.5, len * 0.5, len * 0.5));
				vertices.push_back(glm::vec3(len * -0.5, len * 0.5, len * 0.5));

				vertices.push_back(glm::vec3(len * -0.5, len * -0.5, len * -0.5));
				vertices.push_back(glm::vec3(len * 0.5, len * -0.5, len * -0.5));
				vertices.push_back(glm::vec3(len * 0.5, len * -0.5, len * 0.5));
				vertices.push_back(glm::vec3(len * -0.5, len * -0.5, len * 0.5));


				auto base_location = glm::vec3(base_radius * cos(deg * DEG_TO_RAD), base_radius * sin(deg * DEG_TO_RAD), 0);

				for (auto& vertex : vertices) {

					vertex = glm::vec4(base_location, 0) * base_rotation_z * base_rotation_y * base_rotation_x + glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x;
				}

				if (i == log) {

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

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

					this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 5); this->face.addIndex(face_index + 6);
					this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 6); this->face.addIndex(face_index + 7);

					this->face.addIndex(face_index + 0); this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 1);
					this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 5); this->face.addIndex(face_index + 1);

					this->face.addIndex(face_index + 1); this->face.addIndex(face_index + 5); this->face.addIndex(face_index + 6);
					this->face.addIndex(face_index + 6); this->face.addIndex(face_index + 2); this->face.addIndex(face_index + 1);

					this->face.addIndex(face_index + 2); this->face.addIndex(face_index + 6); this->face.addIndex(face_index + 7);
					this->face.addIndex(face_index + 7); this->face.addIndex(face_index + 3); this->face.addIndex(face_index + 2);

					this->face.addIndex(face_index + 3); this->face.addIndex(face_index + 7); this->face.addIndex(face_index + 4);
					this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 0); this->face.addIndex(face_index + 3);


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

					this->line.addIndex(line_index + 4); this->line.addIndex(line_index + 5);
					this->line.addIndex(line_index + 5); this->line.addIndex(line_index + 6);
					this->line.addIndex(line_index + 6); this->line.addIndex(line_index + 7);
					this->line.addIndex(line_index + 7); this->line.addIndex(line_index + 4);

					this->line.addIndex(line_index + 0); this->line.addIndex(line_index + 4);
					this->line.addIndex(line_index + 1); this->line.addIndex(line_index + 5);
					this->line.addIndex(line_index + 2); this->line.addIndex(line_index + 6);
					this->line.addIndex(line_index + 3); this->line.addIndex(line_index + 7);
				}
				else {

					this->line.addVertices(vertices);

					if (line_index > 0 && i > 0) {

						this->line.addIndex(line_index - 8); this->line.addIndex(line_index + 0);
						this->line.addIndex(line_index - 7); this->line.addIndex(line_index + 1);
						this->line.addIndex(line_index - 6); this->line.addIndex(line_index + 2);
						this->line.addIndex(line_index - 5); this->line.addIndex(line_index + 3);

						this->line.addIndex(line_index - 4); this->line.addIndex(line_index + 4);
						this->line.addIndex(line_index - 3); this->line.addIndex(line_index + 5);
						this->line.addIndex(line_index - 2); this->line.addIndex(line_index + 6);
						this->line.addIndex(line_index - 1); this->line.addIndex(line_index + 7);
					}
				}
			}
		}
	}
}

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

	this->cam.begin();

	ofSetColor(0);
	this->face.draw();
	
	ofSetColor(255);
	this->line.draw();

	for (auto& vertex : this->face.getVertices()) {

		ofDrawSphere(vertex, 4);
	}

	this->cam.end();
}

//--------------------------------------------------------------
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(0);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

auto log = 13;

for (int k = 0; k < 2; k++) {

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

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

auto base_radius_seed = ofRandom(1000);

for (int deg = 0; deg < 360; deg += 45) {

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

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

int line_index = this->line.getNumVertices();

auto base_radius = ofMap(ofNoise(base_radius_seed, (ofGetFrameNum() + i) * 0.01), 0, 1, 50, 450);

auto len = ofMap(base_radius, 50, 450, 10, 80);

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + i) * -0.0065), 0, 1, -PI, PI), glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + i) * -0.0065), 0, 1, -PI, PI), glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed.z, (ofGetFrameNum() + i) * -0.0065), 0, 1, -PI, PI), glm::vec3(0, 0, 1));

auto base_rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum() + i) * -0.0035), 0, 1, -PI, PI), glm::vec3(1, 0, 0));

auto base_rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum() + i) * -0.0035), 0, 1, -PI, PI), glm::vec3(0, 1, 0));

auto base_rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum() + i) * -0.0035), 0, 1, -PI, PI), glm::vec3(0, 0, 1));

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(len * -0.5, len * 0.5, len * -0.5));

vertices.push_back(glm::vec3(len * 0.5, len * 0.5, len * -0.5));

vertices.push_back(glm::vec3(len * 0.5, len * 0.5, len * 0.5));

vertices.push_back(glm::vec3(len * -0.5, len * 0.5, len * 0.5));

vertices.push_back(glm::vec3(len * -0.5, len * -0.5, len * -0.5));

vertices.push_back(glm::vec3(len * 0.5, len * -0.5, len * -0.5));

vertices.push_back(glm::vec3(len * 0.5, len * -0.5, len * 0.5));

vertices.push_back(glm::vec3(len * -0.5, len * -0.5, len * 0.5));

auto base_location = glm::vec3(base_radius * cos(deg * DEG_TO_RAD), base_radius * sin(deg * DEG_TO_RAD), 0);

for (auto& vertex : vertices) {

vertex = glm::vec4(base_location, 0) * base_rotation_z * base_rotation_y * base_rotation_x + glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x;

}

if (i == log) {

this->face.addVertices(vertices);

this->line.addVertices(vertices);

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

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

this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 5); this->face.addIndex(face_index + 6);

this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 6); this->face.addIndex(face_index + 7);

this->face.addIndex(face_index + 0); this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 1);

this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 5); this->face.addIndex(face_index + 1);

this->face.addIndex(face_index + 1); this->face.addIndex(face_index + 5); this->face.addIndex(face_index + 6);

this->face.addIndex(face_index + 6); this->face.addIndex(face_index + 2); this->face.addIndex(face_index + 1);

this->face.addIndex(face_index + 2); this->face.addIndex(face_index + 6); this->face.addIndex(face_index + 7);

this->face.addIndex(face_index + 7); this->face.addIndex(face_index + 3); this->face.addIndex(face_index + 2);

this->face.addIndex(face_index + 3); this->face.addIndex(face_index + 7); this->face.addIndex(face_index + 4);

this->face.addIndex(face_index + 4); this->face.addIndex(face_index + 0); this->face.addIndex(face_index + 3);

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

this->line.addIndex(line_index + 1); this->line.addIndex(line_index + 2);

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

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

this->line.addIndex(line_index + 4); this->line.addIndex(line_index + 5);

this->line.addIndex(line_index + 5); this->line.addIndex(line_index + 6);

this->line.addIndex(line_index + 6); this->line.addIndex(line_index + 7);

this->line.addIndex(line_index + 7); this->line.addIndex(line_index + 4);

this->line.addIndex(line_index + 0); this->line.addIndex(line_index + 4);

this->line.addIndex(line_index + 1); this->line.addIndex(line_index + 5);

this->line.addIndex(line_index + 2); this->line.addIndex(line_index + 6);

this->line.addIndex(line_index + 3); this->line.addIndex(line_index + 7);

}

else {

this->line.addVertices(vertices);

if (line_index > 0 && i > 0) {

this->line.addIndex(line_index - 8); this->line.addIndex(line_index + 0);

this->line.addIndex(line_index - 7); this->line.addIndex(line_index + 1);

this->line.addIndex(line_index - 6); this->line.addIndex(line_index + 2);

this->line.addIndex(line_index - 5); this->line.addIndex(line_index + 3);

this->line.addIndex(line_index - 4); this->line.addIndex(line_index + 4);

this->line.addIndex(line_index - 3); this->line.addIndex(line_index + 5);

this->line.addIndex(line_index - 2); this->line.addIndex(line_index + 6);

this->line.addIndex(line_index - 1); this->line.addIndex(line_index + 7);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->line.draw();

for (auto& vertex : this->face.getVertices()) {

ofDrawSphere(vertex, 4);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210515

[ほしいものリスト]
Amazon

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2021年5月14日2021年5月14日

Moving 10 PRINT. Draw by openFrameworks

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Moving 10 PRINT.

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#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(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetColor(255);
	ofSetLineWidth(3);
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	int span = 22;
	vector<glm::vec2> location_list = { glm::vec2(-170, -170), glm::vec2(170, -170), glm::vec2(-170, 170), glm::vec2(170, 170) };
	vector<float> rotate_list = { 180, 270, 90, 0 };
	
	for (int i = 0; i < location_list.size(); i++) {

		ofPushMatrix();
		ofTranslate(location_list[i]);
		ofRotateZ(rotate_list[i]);

		for (auto x = -132; x <= 132; x += span) {

			for (int y = -132; y <= 132; y += span) {

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

				auto noise_value = ofNoise(location_list[i].x + x * 0.005 + ofGetFrameNum() * 0.02, location_list[i].y + y * 0.005);
				auto start_param = noise_value < 0.5 ?  0 : 25;

				auto start = this->make_point(span, start_param);
				auto end = this->make_point(span, start_param + 50);

				ofDrawLine(start, end);

				ofPopMatrix();
			}
		}

		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(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetColor(255);

ofSetLineWidth(3);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

int span = 22;

vector<glm::vec2> location_list = { glm::vec2(-170, -170), glm::vec2(170, -170), glm::vec2(-170, 170), glm::vec2(170, 170) };

vector<float> rotate_list = { 180, 270, 90, 0 };

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

ofPushMatrix();

ofTranslate(location_list[i]);

ofRotateZ(rotate_list[i]);

for (auto x = -132; x <= 132; x += span) {

for (int y = -132; y <= 132; y += span) {

ofPushMatrix();

ofTranslate(x, y, 0);

auto noise_value = ofNoise(location_list[i].x + x * 0.005 + ofGetFrameNum() * 0.02, location_list[i].y + y * 0.005);

auto start_param = noise_value < 0.5 ? 0 : 25;

auto start = this->make_point(span, start_param);

auto end = this->make_point(span, start_param + 50);

ofDrawLine(start, end);

ofPopMatrix();

}

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/Insta20210514

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