openFrameworks – ページ 427 – プログラミング de 落描き

2021年5月18日2021年5月18日

Count up. Draw by openFrameworks

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Count up.

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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) {};

	ofTrueTypeFont font;
	string word;
	vector<glm::vec3> font_location_list;

	vector<ofColor> base_color_list;

	vector<vector<glm::vec2>> log_list;
	vector<ofColor> color_list;
	vector<float> life_list;

	int count;
};

#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) {};

ofTrueTypeFont font;

string word;

vector<glm::vec3> font_location_list;

vector<ofColor> base_color_list;

vector<vector<glm::vec2>> log_list;

vector<ofColor> color_list;

vector<float> life_list;

int count;

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofNoFill();

	ofColor color;
	vector<int> hex_list = { 0xf72585, 0xb5179e, 0x7209b7, 0x480ca8, 0x3f37c9, 0x4cc9f0 };
	for (auto hex : hex_list) {

		color.setHex(hex);
		this->base_color_list.push_back(color);
	}

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 300, true, true, true);
	this->word = "PCD 2021";

	this->count = 10;
}

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

	if (ofGetFrameNum() % 60 == 0) {

		this->font_location_list.clear();
		this->word = std::to_string(this->count);
	
		int sample_count = 150;
		vector<ofPath> word_path = this->font.getStringAsPoints(word, true, false);
		for (int word_index = 0; word_index < word_path.size(); word_index++) {

			vector<ofPolyline> outline = word_path[word_index].getOutline();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				outline[outline_index] = outline[outline_index].getResampledByCount(sample_count);
				vector<glm::vec3> vertices = outline[outline_index].getVertices();
				this->font_location_list.insert(this->font_location_list.end(), vertices.begin(), vertices.end());
			}
		}

		this->count++;
	}

	int radius = 3;
	while (this->log_list.size() < 1000) {

		int font_location_index = ofRandom(this->font_location_list.size());
		vector<glm::vec2> log;
		log.push_back(this->font_location_list[font_location_index]);
		this->log_list.push_back(log);
		this->color_list.push_back(this->base_color_list[(int)ofRandom(this->base_color_list.size())]);
		this->life_list.push_back(ofRandom(30, 50));
	}

	for (int i = this->log_list.size() - 1; i >= 0; i--) {

		this->life_list[i] -= 1;
		if (this->life_list[i] < 0) {

			this->log_list.erase(this->log_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
			this->life_list.erase(this->life_list.begin() + i);

			continue;
		}

		auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.008, ofGetFrameNum() * 0.003)), 0, 1, -360, 360);
		this->log_list[i].push_back(this->log_list[i].back() + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
		while (this->log_list[i].size() > 100) {

			this->log_list[i].erase(this->log_list[i].begin());
		}
	}
}

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

	ofTranslate(ofGetWidth() * 0.5 - 225, ofGetHeight() * 0.5 + 150);

	ofSetColor(255, 128);
	this->font.drawStringAsShapes(this->word, 0, 0);

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

		ofSetColor(this->color_list[i]);

		if (this->life_list[i] > 30) {

			ofSetLineWidth(1.5);
		}
		else {

			ofSetLineWidth(ofMap(this->life_list[i], 0, 30, 0, 1.5));
		}

		ofBeginShape();
		ofVertices(this->log_list[i]);
		ofEndShape();
	}
}

//--------------------------------------------------------------
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);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofNoFill();

ofColor color;

vector<int> hex_list = { 0xf72585, 0xb5179e, 0x7209b7, 0x480ca8, 0x3f37c9, 0x4cc9f0 };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 300, true, true, true);

this->word = "PCD 2021";

this->count = 10;

}

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

void ofApp::update() {

if (ofGetFrameNum() % 60 == 0) {

this->font_location_list.clear();

this->word = std::to_string(this->count);

int sample_count = 150;

vector<ofPath> word_path = this->font.getStringAsPoints(word, true, false);

for (int word_index = 0; word_index < word_path.size(); word_index++) {

vector<ofPolyline> outline = word_path[word_index].getOutline();

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

outline[outline_index] = outline[outline_index].getResampledByCount(sample_count);

vector<glm::vec3> vertices = outline[outline_index].getVertices();

this->font_location_list.insert(this->font_location_list.end(), vertices.begin(), vertices.end());

}

this->count++;

}

int radius = 3;

while (this->log_list.size() < 1000) {

int font_location_index = ofRandom(this->font_location_list.size());

vector<glm::vec2> log;

log.push_back(this->font_location_list[font_location_index]);

this->log_list.push_back(log);

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

this->life_list.push_back(ofRandom(30, 50));

}

for (int i = this->log_list.size() - 1; i >= 0; i--) {

this->life_list[i] -= 1;

if (this->life_list[i] < 0) {

this->log_list.erase(this->log_list.begin() + i);

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

this->life_list.erase(this->life_list.begin() + i);

continue;

}

auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.008, ofGetFrameNum() * 0.003)), 0, 1, -360, 360);

this->log_list[i].push_back(this->log_list[i].back() + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

while (this->log_list[i].size() > 100) {

this->log_list[i].erase(this->log_list[i].begin());

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5 - 225, ofGetHeight() * 0.5 + 150);

ofSetColor(255, 128);

this->font.drawStringAsShapes(this->word, 0, 0);

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

ofSetColor(this->color_list[i]);

if (this->life_list[i] > 30) {

ofSetLineWidth(1.5);

}

else {

ofSetLineWidth(ofMap(this->life_list[i], 0, 30, 0, 1.5));

}

ofBeginShape();

ofVertices(this->log_list[i]);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210518

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2021年5月17日2021年5月17日

Satelliters. Draw by openFrameworks

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[ About ]
Satelliters.

[ 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) {};

	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 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) {};

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();
	ofSetCircleResolution(72);
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.37);
	ofRotateY(ofGetFrameNum() * 0.72);

	int radius = 300;
	int base_radius = 20;
	int number_of_satellite = 3;
	int number_of_log = 20;

	for (int param = 0; param < 360; param += 15){

		auto base_location = glm::vec3(radius * cos(param * DEG_TO_RAD), radius * sin(param * DEG_TO_RAD), 0);

		auto base_noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
		auto base_rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum() + number_of_log) * 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() + number_of_log) * 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() + number_of_log) * 0.0035), 0, 1, -PI, PI), glm::vec3(0, 0, 1));
		base_location = glm::vec4(base_location, 0) * base_rotation_z * base_rotation_y * base_rotation_x;

		ofFill();
		ofSetColor(39);
		ofDrawSphere(base_location, base_radius * 0.5);

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

			float noise_seed_x = ofRandom(1000);
			float noise_seed_y = ofRandom(1000);
			auto location = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));
			location = glm::normalize(location) * base_radius * 1.5;
			auto prev_location = glm::vec3();

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

				auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, (ofGetFrameNum() + k) * 0.01), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0));
				auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, (ofGetFrameNum() + k) * 0.01), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0));
			
				auto tmp_base_location = glm::vec3(radius * cos(param * DEG_TO_RAD), radius * sin(param * DEG_TO_RAD), 0);
				auto tmp_rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum() + k) * 0.0035), 0, 1, -PI, PI), glm::vec3(1, 0, 0));
				auto tmp_rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum() + k) * 0.0035), 0, 1, -PI, PI), glm::vec3(0, 1, 0));
				auto tmp_rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum() + k) * 0.0035), 0, 1, -PI, PI), glm::vec3(0, 0, 1));
				tmp_base_location = glm::vec4(tmp_base_location, 0) * tmp_rotation_z * tmp_rotation_y * tmp_rotation_x;

				auto draw_location = tmp_base_location + glm::vec4(location, 0) * rotation_y * rotation_x;

				if (k > 0) {

					ofSetColor(ofColor(39, ofMap(k, 0, number_of_log, 32, 255)));
					ofDrawLine(prev_location, draw_location);
				}

				prev_location = draw_location;
			}

			ofDrawSphere(prev_location, base_radius * 0.2);
		}
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

ofSetCircleResolution(72);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

int radius = 300;

int base_radius = 20;

int number_of_satellite = 3;

int number_of_log = 20;

for (int param = 0; param < 360; param += 15){

auto base_location = glm::vec3(radius * cos(param * DEG_TO_RAD), radius * sin(param * DEG_TO_RAD), 0);

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

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

base_location = glm::vec4(base_location, 0) * base_rotation_z * base_rotation_y * base_rotation_x;

ofFill();

ofSetColor(39);

ofDrawSphere(base_location, base_radius * 0.5);

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

float noise_seed_x = ofRandom(1000);

float noise_seed_y = ofRandom(1000);

auto location = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

location = glm::normalize(location) * base_radius * 1.5;

auto prev_location = glm::vec3();

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

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, (ofGetFrameNum() + k) * 0.01), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0));

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, (ofGetFrameNum() + k) * 0.01), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0));

auto tmp_base_location = glm::vec3(radius * cos(param * DEG_TO_RAD), radius * sin(param * DEG_TO_RAD), 0);

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

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

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

tmp_base_location = glm::vec4(tmp_base_location, 0) * tmp_rotation_z * tmp_rotation_y * tmp_rotation_x;

auto draw_location = tmp_base_location + glm::vec4(location, 0) * rotation_y * rotation_x;

if (k > 0) {

ofSetColor(ofColor(39, ofMap(k, 0, number_of_log, 32, 255)));

ofDrawLine(prev_location, draw_location);

}

prev_location = draw_location;

}

ofDrawSphere(prev_location, base_radius * 0.2);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210517

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2021年5月16日

10 PRINT Vortex. Draw by openFrameworks

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[ About ]
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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