2021年1月 – ページ 6 – プログラミング de 落描き

2021年1月16日

Connecting circle to circle. Draw by openFrameworks

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[ About ]
Connectiong circle to circle.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

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

	ofMesh 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) {};

ofMesh line;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofEnableDepthTest();

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

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

	int radius = 50;
	int outer_deg = 0;
	ofSeedRandom(39);

	this->line.clear();

	for (int x = 72; x <= ofGetWidth(); x += 144) {

		for (int y = 72; y <= ofGetWidth(); y += 144) {

			glm::vec3 noise_seed(ofRandom(1000), ofRandom(1000), ofRandom(1000));
			outer_deg += 90;
			for (int deg = 0; deg < 360; deg += 5) {

				this->line.addVertex(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));
				this->line.addVertex(glm::vec3(radius * 0.5 * cos(deg * DEG_TO_RAD), radius * 0.5 * sin(deg * DEG_TO_RAD), 0));

				auto angle_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
				auto angle_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
				auto angle_z = ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
				auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
				auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));
				auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

				float outer_angle_x = outer_deg * DEG_TO_RAD;
				auto outer_rotationx_x = glm::rotate(glm::mat4(), outer_angle_x, glm::vec3(1, 0, 0));

				this->line.setVertex(this->line.getNumVertices() - 2,
					glm::vec3(x, y, 0) + glm::vec4(this->line.getVertex(this->line.getNumVertices() - 2), 0) * outer_rotationx_x);
				this->line.setVertex(this->line.getNumVertices() - 1,
					glm::vec3(x, y, 0) + glm::vec4(this->line.getVertex(this->line.getNumVertices() - 1), 0) * rotation_z * rotation_y * rotation_x);

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

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

	this->line.draw();

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

		ofDrawSphere(vertex, 1);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

int radius = 50;

int outer_deg = 0;

ofSeedRandom(39);

this->line.clear();

for (int x = 72; x <= ofGetWidth(); x += 144) {

for (int y = 72; y <= ofGetWidth(); y += 144) {

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

outer_deg += 90;

for (int deg = 0; deg < 360; deg += 5) {

this->line.addVertex(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

this->line.addVertex(glm::vec3(radius * 0.5 * cos(deg * DEG_TO_RAD), radius * 0.5 * sin(deg * DEG_TO_RAD), 0));

auto angle_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto angle_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto angle_z = ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

float outer_angle_x = outer_deg * DEG_TO_RAD;

auto outer_rotationx_x = glm::rotate(glm::mat4(), outer_angle_x, glm::vec3(1, 0, 0));

this->line.setVertex(this->line.getNumVertices() - 2,

glm::vec3(x, y, 0) + glm::vec4(this->line.getVertex(this->line.getNumVertices() - 2), 0) * outer_rotationx_x);

this->line.setVertex(this->line.getNumVertices() - 1,

glm::vec3(x, y, 0) + glm::vec4(this->line.getVertex(this->line.getNumVertices() - 1), 0) * rotation_z * rotation_y * rotation_x);

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

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

}

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

void ofApp::draw() {

this->line.draw();

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

ofDrawSphere(vertex, 1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210116

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2021年1月15日2021年1月15日

The Prismatic Sun. Draw by openFrameworks

[ Video ]

[ About ]
The Prismatic Sun.

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetCircleResolution(60);
}

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

	this->mesh.clear();
	
	int deg_span = 6;
	ofColor color;
	for (int deg = 0; deg < 360; deg += deg_span * 2) {

		for (int radius = 50; radius < 720; radius += 15) {

			int hue = ((int)ofMap(deg, 0, 360, 0, 255) + radius / 2 - ofGetFrameNum()) % 255;
			color.setHsb(hue, 255, 255);

			this->mesh.addVertex(glm::vec3(radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
			this->mesh.addVertex(glm::vec3(radius * cos((deg - deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));
			this->mesh.addColor(color);
			this->mesh.addColor(color);

			if (radius > 50) {

				this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 4);
				this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 4);
			}

		}
	}


	this->mesh.addVertex(glm::vec3());
	this->mesh.addColor(ofColor(255));
	int center_index = this->mesh.getNumVertices() - 1;
	for (int deg = 0; deg < 360; deg += deg_span) {

		int hue = ((int)ofMap(deg, 0, 360, 0, 255) - ofGetFrameNum()) % 255;
		color.setHsb(hue, 255, 255);

		this->mesh.addVertex(glm::vec3(35 * cos((deg + deg_span) * DEG_TO_RAD), 35 * sin((deg + deg_span) * DEG_TO_RAD), 0));
		this->mesh.addVertex(glm::vec3(35 * cos((deg - deg_span) * DEG_TO_RAD), 35 * sin((deg - deg_span) * DEG_TO_RAD), 0));

		this->mesh.addColor(color);
		this->mesh.addColor(color);

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

		
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	this->mesh.draw();

	ofSetColor(239);
	ofFill();
	ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * -0.5), ofGetWidth(), 30);
	ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() *  0.5), ofGetWidth(), -30);
	ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * -0.5), 30, ofGetHeight());
	ofDrawRectangle(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * -0.5), -30, ofGetHeight());
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetCircleResolution(60);

}

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

void ofApp::update() {

this->mesh.clear();

int deg_span = 6;

ofColor color;

for (int deg = 0; deg < 360; deg += deg_span * 2) {

for (int radius = 50; radius < 720; radius += 15) {

int hue = ((int)ofMap(deg, 0, 360, 0, 255) + radius / 2 - ofGetFrameNum()) % 255;

color.setHsb(hue, 255, 255);

this->mesh.addVertex(glm::vec3(radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addVertex(glm::vec3(radius * cos((deg - deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addColor(color);

if (radius > 50) {

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 4);

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 4);

}

this->mesh.addVertex(glm::vec3());

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

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

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

int hue = ((int)ofMap(deg, 0, 360, 0, 255) - ofGetFrameNum()) % 255;

color.setHsb(hue, 255, 255);

this->mesh.addVertex(glm::vec3(35 * cos((deg + deg_span) * DEG_TO_RAD), 35 * sin((deg + deg_span) * DEG_TO_RAD), 0));

this->mesh.addVertex(glm::vec3(35 * cos((deg - deg_span) * DEG_TO_RAD), 35 * sin((deg - deg_span) * DEG_TO_RAD), 0));

this->mesh.addColor(color);

this->mesh.addIndex(center_index);

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

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

this->mesh.draw();

ofSetColor(239);

ofFill();

ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * -0.5), ofGetWidth(), 30);

ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * 0.5), ofGetWidth(), -30);

ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * -0.5), 30, ofGetHeight());

ofDrawRectangle(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * -0.5), -30, ofGetHeight());

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210115/

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2021年1月14日2021年1月14日

Random walk of Colors. Draw by openFrameworks

[ Video ]

[ About ]
色のランダムウォーク。

Random walk of Colors.

[ 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) {};

	int frame_span;
	int size;
	vector<glm::vec2> location_list;
	vector<ofColor> base_color_list;

	vector<int> current_index_list;
	vector<int> next_index_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) {};

int frame_span;

int size;

vector<glm::vec2> location_list;

vector<ofColor> base_color_list;

vector<int> current_index_list;

vector<int> next_index_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

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

	this->frame_span = 30;
	this->size = 15;
	while (this->location_list.size() < 120) {

		auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));
		bool flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->size * 3) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
		}
	}

	ofColor color;
	vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };
	for (auto hex : hex_list) {

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

	for (int i = 0; i < 90; i++) {

		this->current_index_list.push_back(0);
		this->next_index_list.push_back(ofRandom(this->location_list.size()));
		this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);
	}
}

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

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

		if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

			int next_index = this->next_index_list[i];
			int current_index = next_index;

			vector<int> near_indexes;
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				if (current_index == location_index) { continue; }
				if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

					near_indexes.push_back(location_index);
				}
			}

			if (near_indexes.size() > 0) {

				next_index = near_indexes[ofRandom(near_indexes.size())];
			}

			this->current_index_list[i] = current_index;
			this->next_index_list[i] = next_index;
		}
	}
}

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

	int frame_param = ofGetFrameNum() % this->frame_span;

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

		ofSetColor(this->color_list[i]);

		int current_index = this->current_index_list[i];
		int next_index = this->next_index_list[i];

		auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);
		auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));
		auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);
		auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

		if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

			ofSetLineWidth(3);
			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, 0, distance);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

			ofSetLineWidth(1.5);
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				ofNoFill();
				ofSetColor(255);
				ofDrawCircle(this->location_list[location_index], this->size);

				if (current_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0);
					float start_deg = angle_current * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}

				if (next_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90);
					float start_deg = angle_next * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}
			}
		}
		else {

			ofSetLineWidth(3);
			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, distance, 0);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

			ofSetLineWidth(1.5);
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				ofSetColor(255);
				ofNoFill();
				ofDrawCircle(this->location_list[location_index], this->size);

				if (next_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180);
					float start_deg = angle_next * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					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);

this->frame_span = 30;

this->size = 15;

while (this->location_list.size() < 120) {

auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));

bool flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->size * 3) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

}

ofColor color;

vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

for (int i = 0; i < 90; i++) {

this->current_index_list.push_back(0);

this->next_index_list.push_back(ofRandom(this->location_list.size()));

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

}

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

void ofApp::update() {

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

if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

int next_index = this->next_index_list[i];

int current_index = next_index;

vector<int> near_indexes;

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

if (current_index == location_index) { continue; }

if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

near_indexes.push_back(location_index);

}

if (near_indexes.size() > 0) {

next_index = near_indexes[ofRandom(near_indexes.size())];

}

this->current_index_list[i] = current_index;

this->next_index_list[i] = next_index;

}

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

void ofApp::draw() {

int frame_param = ofGetFrameNum() % this->frame_span;

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

ofSetColor(this->color_list[i]);

int current_index = this->current_index_list[i];

int next_index = this->next_index_list[i];

auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);

auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));

auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);

auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

ofSetLineWidth(3);

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, 0, distance);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

ofSetLineWidth(1.5);

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

ofNoFill();

ofSetColor(255);

ofDrawCircle(this->location_list[location_index], this->size);

if (current_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0);

float start_deg = angle_current * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

if (next_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90);

float start_deg = angle_next * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

else {

ofSetLineWidth(3);

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, distance, 0);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

ofSetLineWidth(1.5);

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

ofSetColor(255);

ofNoFill();

ofDrawCircle(this->location_list[location_index], this->size);

if (next_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180);

float start_deg = angle_next * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210114

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