ofMesh – ページ 79 – プログラミング de 落描き

2022年2月4日2022年2月4日

Random walk with a child. Draw by openFrameworks

[ Video ]

[ About ]
基礎となる位置とパラメータで分散する位置。

Position to be distributed by underlying and parameters.

[ 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 mesh;
	vector<glm::vec3> circle_list;

	int number_of_base;
	int number_of_child;
};

#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 mesh;

vector<glm::vec3> circle_list;

int number_of_base;

int number_of_child;

};

#include "ofApp.h"	

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

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

	ofBackground(255);

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

	this->number_of_base = 150;
	this->number_of_child = 5;
}

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

	ofSeedRandom(39);

	this->mesh.clear();
	this->circle_list.clear();

	vector<glm::vec3> location_list;
	for (int i = 0; i < this->number_of_base; i++) {

		auto base_location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.00035), 0, 1, -350, 350), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.00035), 0, 1, -350, 350));

		for (int k = 0; k < this->number_of_child; k++) {
		
			location_list.push_back(glm::vec3(base_location, k == 0 ? 5 : 3));
		}
	}

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

		for (int k = 1; k < this->number_of_child; k++) {

			auto gap = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -50, 50), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -50, 50));
			auto noise_value = ofNoise(glm::vec4(location_list[i + k] * 0.005, ofGetFrameNum() * 0.015));
			auto param = 0.f;
			if (noise_value > 0.65) {

				param = ofMap(noise_value, 0.65, 1, 0, 3);
			}
			
			location_list[i + k] = location_list[i + k] + gap * param;
		}
	}

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

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

			if (i == k) { continue; }

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < 50) {

				this->mesh.addVertex(location_list[i]);
				this->mesh.addVertex(location_list[k]);

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

	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofSetLineWidth(1);
	this->mesh.drawWireframe();

	ofSetLineWidth(1.5);
	for (auto& circle : this->circle_list) {

		if (circle.z == 3) {

			ofFill();
			ofSetColor(255);
			ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

			ofNoFill();
			ofSetColor(0);
			ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);
		}
	}

	for (auto& circle : this->circle_list) {

		if (circle.z == 5) {

			ofFill();
			ofSetColor(255);
			ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

			ofNoFill();
			ofSetColor(0);
			ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);
		}
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

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

this->number_of_base = 150;

this->number_of_child = 5;

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

this->circle_list.clear();

vector<glm::vec3> location_list;

for (int i = 0; i < this->number_of_base; i++) {

auto base_location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.00035), 0, 1, -350, 350), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.00035), 0, 1, -350, 350));

for (int k = 0; k < this->number_of_child; k++) {

location_list.push_back(glm::vec3(base_location, k == 0 ? 5 : 3));

}

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

for (int k = 1; k < this->number_of_child; k++) {

auto gap = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -50, 50), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -50, 50));

auto noise_value = ofNoise(glm::vec4(location_list[i + k] * 0.005, ofGetFrameNum() * 0.015));

auto param = 0.f;

if (noise_value > 0.65) {

param = ofMap(noise_value, 0.65, 1, 0, 3);

}

location_list[i + k] = location_list[i + k] + gap * param;

}

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

this->circle_list.push_back(location_list[i]);

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

if (i == k) { continue; }

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < 50) {

this->mesh.addVertex(location_list[i]);

this->mesh.addVertex(location_list[k]);

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

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSetLineWidth(1);

this->mesh.drawWireframe();

ofSetLineWidth(1.5);

for (auto& circle : this->circle_list) {

if (circle.z == 3) {

ofFill();

ofSetColor(255);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

ofNoFill();

ofSetColor(0);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

}

for (auto& circle : this->circle_list) {

if (circle.z == 5) {

ofFill();

ofSetColor(255);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

ofNoFill();

ofSetColor(0);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220204

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年2月2日2022年2月2日

Spherical pillar. Draw by openFrameworks

[ Video ]

[ About ]
柱で球体。

Sphere with pillars.

[ 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;

	vector<ofMeshFace> triangle_list;
	ofMesh mesh, 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) {};

ofEasyCam cam;

vector<ofMeshFace> triangle_list;

ofMesh mesh, frame;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(300, 3);
	this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

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

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

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

	for (float radius = 150; radius <= 300; radius += 10) {

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

			glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;
			auto noise_value = ofNoise(avg.y * 0.0065 + ofGetFrameNum() * 0.035, avg.x * 0.0025, avg.z * 0.0025);

			if (noise_value < 0.35) { noise_value = 0; }
			else if (noise_value > 0.7) { noise_value = 1; }
			else { noise_value = ofMap(noise_value, 0.35, 0.7, 0, 1); }

			vector<glm::vec3> vertices;

			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * (radius + 5) - avg);
			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * (radius + 5) - avg);
			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * (radius + 5) - avg);

			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * (radius - 5) - avg);
			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * (radius - 5) - avg);
			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * (radius - 5) - avg);

			for (auto& vertex : vertices) {

				vertex *= noise_value;
				vertex += avg;
			}

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

			for (int k = 0; k < 6; k++) {

				this->mesh.addColor(ofColor(0));
				this->frame.addColor(ofColor(255));
			}

			this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 3);
			this->mesh.addTriangle(this->mesh.getNumVertices() - 4, this->mesh.getNumVertices() - 5, this->mesh.getNumVertices() - 6);

			this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 5);
			this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 5, this->mesh.getNumVertices() - 4);

			this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 3, this->mesh.getNumVertices() - 6);
			this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 6, this->mesh.getNumVertices() - 4);

			this->mesh.addTriangle(this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 3, this->mesh.getNumVertices() - 6);
			this->mesh.addTriangle(this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 6, this->mesh.getNumVertices() - 5);

			if (radius == 150) {

				this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2);
				this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);
				this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 3);
			}

			if(radius == 300){

				this->frame.addIndex(this->frame.getNumVertices() - 4); this->frame.addIndex(this->frame.getNumVertices() - 5);
				this->frame.addIndex(this->frame.getNumVertices() - 5); this->frame.addIndex(this->frame.getNumVertices() - 6);
				this->frame.addIndex(this->frame.getNumVertices() - 4); this->frame.addIndex(this->frame.getNumVertices() - 6);
			}

			this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);
			this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 5);
			this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 6);
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.333333333333333333);

	ofSetColor(239);
	this->mesh.drawFaces();

	ofSetColor(39);
	this->frame.drawWireframe();

	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);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(300, 3);

this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

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

}

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

void ofApp::update() {

this->mesh.clear();

this->frame.clear();

for (float radius = 150; radius <= 300; radius += 10) {

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

glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;

auto noise_value = ofNoise(avg.y * 0.0065 + ofGetFrameNum() * 0.035, avg.x * 0.0025, avg.z * 0.0025);

if (noise_value < 0.35) { noise_value = 0; }

else if (noise_value > 0.7) { noise_value = 1; }

else { noise_value = ofMap(noise_value, 0.35, 0.7, 0, 1); }

vector<glm::vec3> vertices;

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * (radius + 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * (radius + 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * (radius + 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * (radius - 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * (radius - 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * (radius - 5) - avg);

for (auto& vertex : vertices) {

vertex *= noise_value;

vertex += avg;

}

this->mesh.addVertices(vertices);

this->frame.addVertices(vertices);

for (int k = 0; k < 6; k++) {

this->mesh.addColor(ofColor(0));

this->frame.addColor(ofColor(255));

}

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

this->mesh.addTriangle(this->mesh.getNumVertices() - 4, this->mesh.getNumVertices() - 5, this->mesh.getNumVertices() - 6);

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 5);

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 5, this->mesh.getNumVertices() - 4);

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 3, this->mesh.getNumVertices() - 6);

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 6, this->mesh.getNumVertices() - 4);

this->mesh.addTriangle(this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 3, this->mesh.getNumVertices() - 6);

this->mesh.addTriangle(this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 6, this->mesh.getNumVertices() - 5);

if (radius == 150) {

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

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

this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 3);

}

if(radius == 300){

this->frame.addIndex(this->frame.getNumVertices() - 4); this->frame.addIndex(this->frame.getNumVertices() - 5);

this->frame.addIndex(this->frame.getNumVertices() - 5); this->frame.addIndex(this->frame.getNumVertices() - 6);

this->frame.addIndex(this->frame.getNumVertices() - 4); this->frame.addIndex(this->frame.getNumVertices() - 6);

}

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

this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 5);

this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 6);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.333333333333333333);

ofSetColor(239);

this->mesh.drawFaces();

ofSetColor(39);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220202

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年2月1日2022年2月1日

Random walk on sphere hexagon. Draw by openFrameworks

[ Video ]

[ About ]
球体上の座標を規則正しく動くランダムウォーク。

Random walk with regular movement of coordinates on a sphere.

[ Source ]

#pragma once
#include "ofMain.h"

class Actor {
public:
	Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	glm::vec3 get_location();
	glm::vec3 get_prev_location();
	ofColor get_color();

private:

	int select_index;
	int next_index;

	glm::vec3 location;
	glm::vec3 prev_location;

	ofColor color;
};

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

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

	ofEasyCam cam;
	vector<glm::vec3> location_list;
	vector<vector<int>> next_index_list;
	vector<int> destination_list;

	vector<unique_ptr<Actor>> actor_list;

	ofMesh line;
};

#pragma once

#include "ofMain.h"

class Actor {

public:

Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

glm::vec3 get_location();

glm::vec3 get_prev_location();

ofColor get_color();

private:

int select_index;

int next_index;

glm::vec3 location;

glm::vec3 prev_location;

ofColor color;

};

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

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

ofEasyCam cam;

vector<glm::vec3> location_list;

vector<vector<int>> next_index_list;

vector<int> destination_list;

vector<unique_ptr<Actor>> actor_list;

ofMesh line;

};

#include "ofApp.h"	

//--------------------------------------------------------------
Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	this->select_index = ofRandom(location_list.size());
	while (true) {

		auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);
		if (itr == destination_list.end()) {

			destination_list.push_back(this->select_index);
			break;
		}

		this->select_index = (this->select_index + 1) % location_list.size();
	}

	this->next_index = this->select_index;

	this->color.setHsb(ofRandom(255), 150, 255);
}

//--------------------------------------------------------------
void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

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

		auto tmp_index = this->select_index;
		this->select_index = this->next_index;
		int retry = next_index_list[this->select_index].size() + 1;
		this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];
		while (--retry > 0) {

			auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);
			if (destination_itr == destination_list.end()) {

				if (tmp_index != this->next_index) {

					destination_list.push_back(this->next_index);
					break;
				}
			}

			this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];
		}
		if (retry <= 0) {

			destination_list.push_back(this->select_index);
			this->next_index = this->select_index;
		}
	}

	auto param = ofGetFrameNum() % frame_span;
	auto distance = location_list[this->next_index] - location_list[this->select_index];
	if (this->next_index != this->select_index) {

		this->prev_location = location;
	}
	this->location = location_list[this->select_index] + distance / frame_span * param;
}

//--------------------------------------------------------------
glm::vec3 Actor::get_location() {

	return this->location;
}

//--------------------------------------------------------------
glm::vec3 Actor::get_prev_location() {

	return this->prev_location;
}

//--------------------------------------------------------------
ofColor Actor::get_color() {

	return this->color;
}

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

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

	ofBackground(0);
	ofEnableDepthTest();

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

	auto ico_sphere = ofIcoSpherePrimitive(250, 3);
	auto triangles = ico_sphere.getMesh().getUniqueFaces();
	for (auto& triangle : triangles) {

		auto avg = glm::vec3(triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		this->location_list.push_back(avg);

		auto alpha = 255;
		if (avg.z < 0) {

			alpha = ofMap(avg.z, 0, -250, 255, 0);
		}

		this->line.addVertex(avg);
		this->line.addColor(ofColor(200, alpha));
	}

	int i = 0;
	for (auto& location : this->location_list) {

		vector<int> next_index = vector<int>();
		int index = -1;
		for (auto& other : this->location_list) {

			index++;
			if (location == other) { continue; }

			float distance = glm::distance(location, other);
			if (distance <= 25) {

				next_index.push_back(index);

				this->line.addIndex(i);
				this->line.addIndex(index);
			}
		}

		this->next_index_list.push_back(next_index);

		i++;
	}

	for (int i = 0; i < this->location_list.size() - 150; i++) {

		this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));
	}
}

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

	int frame_span = 15;
	int prev_index_size = 0;

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

		prev_index_size = this->destination_list.size();
	}

	for (auto& actor : this->actor_list) {

		actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);
	}

	if (prev_index_size != 0) {

		this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);
	}
}

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

	this->cam.begin();

	for (auto& actor : this->actor_list) {

		auto alpha = 255;
		if (actor->get_location().z < 0) {

			alpha = ofMap(actor->get_location().z, 0, -250, 255, 0);
		}

		ofSetColor(actor->get_color(), alpha);
		ofDrawSphere(actor->get_location(), 5);
	}

	this->line.drawWireframe();

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

this->select_index = ofRandom(location_list.size());

while (true) {

auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);

if (itr == destination_list.end()) {

destination_list.push_back(this->select_index);

break;

}

this->select_index = (this->select_index + 1) % location_list.size();

}

this->next_index = this->select_index;

this->color.setHsb(ofRandom(255), 150, 255);

}

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

void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

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

auto tmp_index = this->select_index;

this->select_index = this->next_index;

int retry = next_index_list[this->select_index].size() + 1;

this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];

while (--retry > 0) {

auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);

if (destination_itr == destination_list.end()) {

if (tmp_index != this->next_index) {

destination_list.push_back(this->next_index);

break;

}

this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];

}

if (retry <= 0) {

destination_list.push_back(this->select_index);

this->next_index = this->select_index;

}

auto param = ofGetFrameNum() % frame_span;

auto distance = location_list[this->next_index] - location_list[this->select_index];

if (this->next_index != this->select_index) {

this->prev_location = location;

}

this->location = location_list[this->select_index] + distance / frame_span * param;

}

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

glm::vec3 Actor::get_location() {

return this->location;

}

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

glm::vec3 Actor::get_prev_location() {

return this->prev_location;

}

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

ofColor Actor::get_color() {

return this->color;

}

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

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

auto ico_sphere = ofIcoSpherePrimitive(250, 3);

auto triangles = ico_sphere.getMesh().getUniqueFaces();

for (auto& triangle : triangles) {

auto avg = glm::vec3(triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

this->location_list.push_back(avg);

auto alpha = 255;

if (avg.z < 0) {

alpha = ofMap(avg.z, 0, -250, 255, 0);

}

this->line.addVertex(avg);

this->line.addColor(ofColor(200, alpha));

}

int i = 0;

for (auto& location : this->location_list) {

vector<int> next_index = vector<int>();

int index = -1;

for (auto& other : this->location_list) {

index++;

if (location == other) { continue; }

float distance = glm::distance(location, other);

if (distance <= 25) {

next_index.push_back(index);

this->line.addIndex(i);

this->line.addIndex(index);

}

this->next_index_list.push_back(next_index);

i++;

}

for (int i = 0; i < this->location_list.size() - 150; i++) {

this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));

}

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

void ofApp::update() {

int frame_span = 15;

int prev_index_size = 0;

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

prev_index_size = this->destination_list.size();

}

for (auto& actor : this->actor_list) {

actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);

}

if (prev_index_size != 0) {

this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);

}

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

void ofApp::draw() {

this->cam.begin();

for (auto& actor : this->actor_list) {

auto alpha = 255;

if (actor->get_location().z < 0) {

alpha = ofMap(actor->get_location().z, 0, -250, 255, 0);

}

ofSetColor(actor->get_color(), alpha);

ofDrawSphere(actor->get_location(), 5);

}

this->line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220201

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