プログラミング de 落描き – ページ 153 – クリエイティブ・コーディングによる生成物とソース

2023年2月6日

Character sphere. Draw by openFrameworks

[ Video ]

[ About ]
文字の球体。

[ 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;
	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) {};

ofEasyCam cam;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(3);
	ofEnableDepthTest();

	this->font.loadFont("fonts/msgothic.ttc", 50, true, true, true);
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.7);
	ofRotateX(ofGetFrameNum() * 1.2);

	ofColor color;
	string word = "JunKiyoshi";
	
	for (int i = 0; i < 300; i++) {

		ofRotateZ(ofRandom(360));
		ofRotateY(ofRandom(360));
		ofRotateX(ofRandom(360));

		auto noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05);
		auto len = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 150);

		int sample_count = 60;

		auto hue = ofRandom(255);
		ofPath chara_path = this->font.getCharacterAsPoints(word[(int)ofRandom(word.size())], true, false);
		vector<ofPolyline> outline = chara_path.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();
			vector<glm::vec3> mesh_vertices;
			vector<glm::vec3> base_location_list;

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

				auto base_location = glm::vec3(0, 0, -150);
				auto location = vertices[vertices_index] - glm::vec3(25, -25, 0);

				mesh_vertices.push_back(location);
				base_location_list.push_back(base_location);
			}

			ofMesh face, line;
			line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
			for (int k = 0; k < mesh_vertices.size(); k++) {

				face.addVertex(base_location_list[k] + mesh_vertices[k] + glm::vec3(0, 0, 0));
				face.addVertex(base_location_list[k] + mesh_vertices[k] + glm::vec3(0, 0, -len));

				line.addVertex(base_location_list[k] + mesh_vertices[k] + glm::vec3(0, 0, 0));
				line.addVertex(base_location_list[k] + mesh_vertices[k] + glm::vec3(0, 0, -len));

				if (k > 0) {

					face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 4);
					face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

					line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 3);
					line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 4);
				}
			}

			face.addIndex(face.getNumVertices() - 1); face.addIndex(0); face.addIndex(1);
			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(2);

			line.addIndex(line.getNumVertices() - 1); line.addIndex(1);
			line.addIndex(line.getNumVertices() - 2); line.addIndex(0);

			color.setHsb(hue, 150, 230);

			ofSetColor(color);
			face.draw();

			color.setHsb(hue, 255, 255);

			ofSetColor(ofColor(255));
			line.drawWireframe();
		}
	}

	ofSetColor(0);
	ofDrawSphere(145);

	this->cam.end();
}

//--------------------------------------------------------------
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(3);

ofEnableDepthTest();

this->font.loadFont("fonts/msgothic.ttc", 50, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.7);

ofRotateX(ofGetFrameNum() * 1.2);

ofColor color;

string word = "JunKiyoshi";

for (int i = 0; i < 300; i++) {

ofRotateZ(ofRandom(360));

ofRotateY(ofRandom(360));

ofRotateX(ofRandom(360));

auto noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05);

auto len = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 150);

int sample_count = 60;

auto hue = ofRandom(255);

ofPath chara_path = this->font.getCharacterAsPoints(word[(int)ofRandom(word.size())], true, false);

vector<ofPolyline> outline = chara_path.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();

vector<glm::vec3> mesh_vertices;

vector<glm::vec3> base_location_list;

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

auto base_location = glm::vec3(0, 0, -150);

auto location = vertices[vertices_index] - glm::vec3(25, -25, 0);

mesh_vertices.push_back(location);

base_location_list.push_back(base_location);

}

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int k = 0; k < mesh_vertices.size(); k++) {

face.addVertex(base_location_list[k] + mesh_vertices[k] + glm::vec3(0, 0, 0));

face.addVertex(base_location_list[k] + mesh_vertices[k] + glm::vec3(0, 0, -len));

line.addVertex(base_location_list[k] + mesh_vertices[k] + glm::vec3(0, 0, 0));

line.addVertex(base_location_list[k] + mesh_vertices[k] + glm::vec3(0, 0, -len));

if (k > 0) {

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 4);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 3);

line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 4);

}

face.addIndex(face.getNumVertices() - 1); face.addIndex(0); face.addIndex(1);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(2);

line.addIndex(line.getNumVertices() - 1); line.addIndex(1);

line.addIndex(line.getNumVertices() - 2); line.addIndex(0);

color.setHsb(hue, 150, 230);

ofSetColor(color);

face.draw();

color.setHsb(hue, 255, 255);

ofSetColor(ofColor(255));

line.drawWireframe();

}

ofSetColor(0);

ofDrawSphere(145);

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230206

[ほしいものリスト]
Amazon

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2023年2月5日

Connecting line. Draw by openFrameworks

[ Video ]

[ About ]
線をつなぐ。

[ 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) {};

	ofMesh mesh;

	glm::vec2 base_seed;

	vector<vector<glm::vec2>> log_list;
	vector<glm::vec2> velocity_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) {};

ofMesh mesh;

glm::vec2 base_seed;

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

vector<glm::vec2> velocity_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(3);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	this->base_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
}

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

	this->mesh.clear();

	int span = 20;
	int radius = 90;
	ofColor color;

	while (this->log_list.size() < 18) {
	
		int deg_base = ofRandom(360);
		int deg = deg_base / 24 * 24;

		vector<glm::vec2> log;
		auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		log.push_back(location);
		auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

		auto distance = location - next;
		distance *= 2;

		auto future = location + distance * 30;
		auto random_deg = ofRandom(360);
		future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));
		auto future_distance = future - location;

		this->log_list.push_back(log);
		this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6));
		color.setHsb(ofRandom(255), 180, 255);
		this->color_list.push_back(color);
	}

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

		auto location = this->log_list[i][this->log_list[i].size() - 1];
		location += this->velocity_list[i];
		this->log_list[i].push_back(location);
		this->velocity_list[i] *= 1.01;

		if (glm::length(location) > 800) {

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

			continue;
		}
		else if (glm::length(location) > 700) {

			this->color_list[i] = ofColor(this->color_list[i], ofMap(glm::length(location), 700, 800, 255, 0));
		}
	}

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

		int start_index = this->mesh.getNumVertices() - 1;

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

			this->mesh.addVertex(glm::vec3(this->log_list[i][k], 0));
			this->mesh.addColor(this->color_list[i]);

			if (k > 0)  {

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

		if (i > 0) {

			this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(start_index);
		}
	}
}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	this->mesh.drawWireframe();
}

//--------------------------------------------------------------
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(3);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

this->base_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

}

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

void ofApp::update() {

this->mesh.clear();

int span = 20;

int radius = 90;

ofColor color;

while (this->log_list.size() < 18) {

int deg_base = ofRandom(360);

int deg = deg_base / 24 * 24;

vector<glm::vec2> log;

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

log.push_back(location);

auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

auto distance = location - next;

distance *= 2;

auto future = location + distance * 30;

auto random_deg = ofRandom(360);

future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

this->log_list.push_back(log);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6));

color.setHsb(ofRandom(255), 180, 255);

this->color_list.push_back(color);

}

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

auto location = this->log_list[i][this->log_list[i].size() - 1];

location += this->velocity_list[i];

this->log_list[i].push_back(location);

this->velocity_list[i] *= 1.01;

if (glm::length(location) > 800) {

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

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

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

continue;

}

else if (glm::length(location) > 700) {

this->color_list[i] = ofColor(this->color_list[i], ofMap(glm::length(location), 700, 800, 255, 0));

}

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

int start_index = this->mesh.getNumVertices() - 1;

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

this->mesh.addVertex(glm::vec3(this->log_list[i][k], 0));

this->mesh.addColor(this->color_list[i]);

if (k > 0) {

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

}

if (i > 0) {

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(start_index);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

this->mesh.drawWireframe();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta202300205/

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2023年2月4日

Radial line. Draw by openFrameworks

[ Video ]

[ About ]
放射状の線。

[ 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) {};

	ofMesh mesh;

	glm::vec2 base_seed;

	vector<vector<glm::vec2>> log_list;
	vector<glm::vec2> velocity_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) {};

ofMesh mesh;

glm::vec2 base_seed;

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

vector<glm::vec2> velocity_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetCircleResolution(60);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	this->base_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
}

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

	this->mesh.clear();

	int span = 20;
	int radius = 90;
	ofColor color;

	while (this->log_list.size() < 2000) {
	
		int deg_base = ofRandom(360);
		int deg = deg_base / 24 * 24;

		vector<glm::vec2> log;
		auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		log.push_back(location);
		auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

		auto distance = location - next;
		distance *= 2;

		auto future = location + distance * 30;
		auto random_deg = ofRandom(360);
		future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));
		auto future_distance = future - location;

		this->log_list.push_back(log);
		this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6));
		color.setHsb(ofMap(deg_base, 0, 360, 0, 255), 255, 255);
		this->color_list.push_back(ofColor(color, 64));
	}

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

		auto location = this->log_list[i][this->log_list[i].size() - 1];
		location += this->velocity_list[i];
		
		if (glm::distance(glm::vec2(), this->log_list[i][this->log_list[i].size() - 1])> 1300) {

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

			continue;
		}

		this->log_list[i].push_back(location);
		this->velocity_list[i] *= 1.01;
	}

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

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

			this->mesh.addVertex(glm::vec3(this->log_list[i][k], 0));
			this->mesh.addColor(this->color_list[i]);

			if (k > 0) {

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

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

		for (int k = i + 1; k < this->mesh.getNumVertices(); k++) {

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

				auto alpha = distance < span * 0.25 ? 255 : ofMap(distance, span * 0.25, span, 255, 0);

				if (this->mesh.getColor(i).a < alpha) {

					this->mesh.setColor(i, ofColor(this->mesh.getColor(i), alpha));
				}

				if (this->mesh.getColor(k).a < alpha) {

					this->mesh.setColor(k, ofColor(this->mesh.getColor(k), alpha));
				}

				this->mesh.addIndex(i);
				this->mesh.addIndex(k);
			}
		}
	}
	*/
}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	this->mesh.drawWireframe();

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

		ofSetColor(this->mesh.getColor(i));
		//ofDrawCircle(this->mesh.getVertex(i), 3);
	}
}

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

ofSetCircleResolution(60);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

this->base_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

}

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

void ofApp::update() {

this->mesh.clear();

int span = 20;

int radius = 90;

ofColor color;

while (this->log_list.size() < 2000) {

int deg_base = ofRandom(360);

int deg = deg_base / 24 * 24;

vector<glm::vec2> log;

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

log.push_back(location);

auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

auto distance = location - next;

distance *= 2;

auto future = location + distance * 30;

auto random_deg = ofRandom(360);

future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

this->log_list.push_back(log);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6));

color.setHsb(ofMap(deg_base, 0, 360, 0, 255), 255, 255);

this->color_list.push_back(ofColor(color, 64));

}

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

auto location = this->log_list[i][this->log_list[i].size() - 1];

location += this->velocity_list[i];

if (glm::distance(glm::vec2(), this->log_list[i][this->log_list[i].size() - 1])> 1300) {

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

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

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

continue;

}

this->log_list[i].push_back(location);

this->velocity_list[i] *= 1.01;

}

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

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

this->mesh.addVertex(glm::vec3(this->log_list[i][k], 0));

this->mesh.addColor(this->color_list[i]);

if (k > 0) {

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

}

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

for (int k = i + 1; k < this->mesh.getNumVertices(); k++) {

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

if (distance < span) {

auto alpha = distance < span * 0.25 ? 255 : ofMap(distance, span * 0.25, span, 255, 0);

if (this->mesh.getColor(i).a < alpha) {

this->mesh.setColor(i, ofColor(this->mesh.getColor(i), alpha));

}

if (this->mesh.getColor(k).a < alpha) {

this->mesh.setColor(k, ofColor(this->mesh.getColor(k), alpha));

}

this->mesh.addIndex(i);

this->mesh.addIndex(k);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

this->mesh.drawWireframe();

ofFill();

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

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

//ofDrawCircle(this->mesh.getVertex(i), 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230204

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