2020年8月 – ページ 10 – プログラミング de 落描き

2020年8月4日2020年8月4日

Sphere split. Draw by openFrameworks

[ Video ]

[ About ]
球体分裂。

Sphere split.

[ 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;
	ofIcoSpherePrimitive sphere;
	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;

ofIcoSpherePrimitive sphere;

ofMesh mesh, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

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

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

	int anime_rate = 90;
	auto param = ofGetFrameNum() % anime_rate;

	int radius = 300;
	int iterations = (ofGetFrameNum() % (anime_rate * 4)) / anime_rate;
	this->sphere = ofIcoSpherePrimitive(radius, iterations);

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

	auto anime_param = 0.f;
	if (param > anime_rate * 0.4 && param <= anime_rate * 0.5) {

		anime_param = ofMap(param, anime_rate * 0.4, anime_rate * 0.5, 0, 1);
	}
	else if (param > anime_rate * 0.5 && param <= anime_rate * 0.9) {

		anime_param = 1;
	}
	else if (param > anime_rate * 0.9 && param <= anime_rate) {

		anime_param = ofMap(param, anime_rate * 0.9, anime_rate, 1, 0);
	}

	int radius_start = 65;
	int radius_max = 180;
	for (auto& triangle : this->sphere.getMesh().getUniqueFaces()) {

		auto mesh_index = this->mesh.getNumVertices();
		auto frame_index = this->frame.getNumVertices();

		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		auto noise_value = ofNoise(avg);
		auto noise_location = avg + (avg * noise_value * anime_param);

		this->mesh.addVertex(noise_location + triangle.getVertex(0) - avg);
		this->mesh.addVertex(noise_location + triangle.getVertex(1) - avg);
		this->mesh.addVertex(noise_location + triangle.getVertex(2) - avg);

		this->mesh.addIndex(mesh_index + 0); this->mesh.addIndex(mesh_index + 1); this->mesh.addIndex(mesh_index + 2);

		this->frame.addVertex(glm::vec3());
		this->frame.addVertex(noise_location);

		this->frame.addIndex(frame_index + 0); this->frame.addIndex(frame_index + 1);

	}
}

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

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.5);
	ofRotateY(ofGetFrameNum() * 0.32);

	ofSetColor(39);
	ofSetLineWidth(3);
	this->mesh.drawWireframe();
	
	ofSetColor(89);
	ofSetLineWidth(1.5);
	this->frame.drawWireframe();

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

	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);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

int anime_rate = 90;

auto param = ofGetFrameNum() % anime_rate;

int radius = 300;

int iterations = (ofGetFrameNum() % (anime_rate * 4)) / anime_rate;

this->sphere = ofIcoSpherePrimitive(radius, iterations);

this->mesh.clear();

this->frame.clear();

auto anime_param = 0.f;

if (param > anime_rate * 0.4 && param <= anime_rate * 0.5) {

anime_param = ofMap(param, anime_rate * 0.4, anime_rate * 0.5, 0, 1);

}

else if (param > anime_rate * 0.5 && param <= anime_rate * 0.9) {

anime_param = 1;

}

else if (param > anime_rate * 0.9 && param <= anime_rate) {

anime_param = ofMap(param, anime_rate * 0.9, anime_rate, 1, 0);

}

int radius_start = 65;

int radius_max = 180;

for (auto& triangle : this->sphere.getMesh().getUniqueFaces()) {

auto mesh_index = this->mesh.getNumVertices();

auto frame_index = this->frame.getNumVertices();

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

auto noise_value = ofNoise(avg);

auto noise_location = avg + (avg * noise_value * anime_param);

this->mesh.addVertex(noise_location + triangle.getVertex(0) - avg);

this->mesh.addVertex(noise_location + triangle.getVertex(1) - avg);

this->mesh.addVertex(noise_location + triangle.getVertex(2) - avg);

this->mesh.addIndex(mesh_index + 0); this->mesh.addIndex(mesh_index + 1); this->mesh.addIndex(mesh_index + 2);

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

this->frame.addVertex(noise_location);

this->frame.addIndex(frame_index + 0); this->frame.addIndex(frame_index + 1);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.5);

ofRotateY(ofGetFrameNum() * 0.32);

ofSetColor(39);

ofSetLineWidth(3);

this->mesh.drawWireframe();

ofSetColor(89);

ofSetLineWidth(1.5);

this->frame.drawWireframe();

ofSetColor(239);

this->mesh.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200804

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年8月3日2020年8月3日

Circle split. Draw by openFrameworks

[ Video ]

[ About ]
輪切り。

Circle split.

[ 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) {};

	vector<glm::vec2> location_list;
	vector<float> noise_seed_list;
	vector<int> deg_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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

vector<glm::vec2> location_list;

vector<float> noise_seed_list;

vector<int> deg_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);

	for (int x = -300; x <= 300; x += 100) {

		for (int y = -300; y <= 300; y += 100) {

			this->location_list.push_back(glm::vec2(x, y));
			this->noise_seed_list.push_back(ofRandom(1000));
		}
	}

	this->deg_list = {10, 15, 18, 30, 36, 72, 90, 120, 180};
}

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

}

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

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

	int anime_rate = 90;
	auto param = ofGetFrameNum() % anime_rate;

	int radius = 15;

	if (param == 0) {

		for (int i = 0; i < this->location_list.size(); i++) {
			
			this->noise_seed_list[i] = ofRandom(1000); 
		}
	}

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

		ofPushMatrix();
		ofTranslate(this->location_list[i]);

		int deg_span = this->deg_list[(int)ofMap(ofNoise(this->noise_seed_list[i]), 0, 1, 1, this->deg_list.size())];
		for (int deg_start = 0; deg_start < 360; deg_start += deg_span) {

			auto source_location = glm::vec2(radius * cos(deg_start * DEG_TO_RAD), radius * sin(deg_start * DEG_TO_RAD));
			auto add_radius = radius * 1.5;
			auto anime_param = 0.f;
			if (param > anime_rate * 0.4 && param <= anime_rate * 0.5) {

				anime_param = ofMap(param, anime_rate * 0.4, anime_rate * 0.5, 0, 1);
			}
			else if (param > anime_rate * 0.5 && param <= anime_rate * 0.9) {

				anime_param = 1;
			}
			else if (param > anime_rate * 0.9 && param <= anime_rate) {

				anime_param = ofMap(param, anime_rate * 0.9, anime_rate, 1, 0);
			}

			auto noise_location = glm::vec2(anime_param * add_radius * cos(deg_start * DEG_TO_RAD), anime_param * add_radius * sin(deg_start * DEG_TO_RAD));

			vector<glm::vec2> out, in;
			for (int deg = deg_start - deg_span * 0.5; deg <= deg_start + deg_span * 0.5; deg++) {

				in.push_back(noise_location + glm::vec2((radius - 3) * cos(deg * DEG_TO_RAD), (radius - 3) * sin(deg * DEG_TO_RAD)));
				out.push_back(noise_location + glm::vec2((radius + 3) * cos(deg * DEG_TO_RAD), (radius + 3) * sin(deg * DEG_TO_RAD)));
			}

			if (param < anime_rate * 0.4) {

				ofSetColor(239);
			}
			else if (param < anime_rate * 0.5) {
				
				ofSetColor(ofMap(param, anime_rate * 0.4, anime_rate * 0.5, 239, 39));
			}
			else if (param < anime_rate * 0.9) {

				ofSetColor(39);
			}
			else {

				ofSetColor(ofMap(param, anime_rate * 0.9, anime_rate, 39, 239));
				
			}
			ofDrawLine(glm::vec2(), source_location + noise_location);

			ofSetColor(39);
			ofBeginShape();
			ofVertices(in);
			reverse(out.begin(), out.end());
			ofVertices(out);
			ofEndShape(true);
		}

		ofPopMatrix();
	}
}

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

for (int x = -300; x <= 300; x += 100) {

for (int y = -300; y <= 300; y += 100) {

this->location_list.push_back(glm::vec2(x, y));

this->noise_seed_list.push_back(ofRandom(1000));

}

this->deg_list = {10, 15, 18, 30, 36, 72, 90, 120, 180};

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

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

int anime_rate = 90;

auto param = ofGetFrameNum() % anime_rate;

int radius = 15;

if (param == 0) {

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

this->noise_seed_list[i] = ofRandom(1000);

}

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

ofPushMatrix();

ofTranslate(this->location_list[i]);

int deg_span = this->deg_list[(int)ofMap(ofNoise(this->noise_seed_list[i]), 0, 1, 1, this->deg_list.size())];

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

auto source_location = glm::vec2(radius * cos(deg_start * DEG_TO_RAD), radius * sin(deg_start * DEG_TO_RAD));

auto add_radius = radius * 1.5;

auto anime_param = 0.f;

if (param > anime_rate * 0.4 && param <= anime_rate * 0.5) {

anime_param = ofMap(param, anime_rate * 0.4, anime_rate * 0.5, 0, 1);

}

else if (param > anime_rate * 0.5 && param <= anime_rate * 0.9) {

anime_param = 1;

}

else if (param > anime_rate * 0.9 && param <= anime_rate) {

anime_param = ofMap(param, anime_rate * 0.9, anime_rate, 1, 0);

}

auto noise_location = glm::vec2(anime_param * add_radius * cos(deg_start * DEG_TO_RAD), anime_param * add_radius * sin(deg_start * DEG_TO_RAD));

vector<glm::vec2> out, in;

for (int deg = deg_start - deg_span * 0.5; deg <= deg_start + deg_span * 0.5; deg++) {

in.push_back(noise_location + glm::vec2((radius - 3) * cos(deg * DEG_TO_RAD), (radius - 3) * sin(deg * DEG_TO_RAD)));

out.push_back(noise_location + glm::vec2((radius + 3) * cos(deg * DEG_TO_RAD), (radius + 3) * sin(deg * DEG_TO_RAD)));

}

if (param < anime_rate * 0.4) {

ofSetColor(239);

}

else if (param < anime_rate * 0.5) {

ofSetColor(ofMap(param, anime_rate * 0.4, anime_rate * 0.5, 239, 39));

}

else if (param < anime_rate * 0.9) {

ofSetColor(39);

}

else {

ofSetColor(ofMap(param, anime_rate * 0.9, anime_rate, 39, 239));

}

ofDrawLine(glm::vec2(), source_location + noise_location);

ofSetColor(39);

ofBeginShape();

ofVertices(in);

reverse(out.begin(), out.end());

ofVertices(out);

ofEndShape(true);

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200803

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年8月2日

Fireworks by creative coding. Draw by openFrameworks

[ Video ]

[ About ]
クリエイティブコーディングによる花火。

Fireworks by creative coding.

[ 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) {};

	vector<glm::vec2> location_list;
	vector<float> radius_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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

vector<glm::vec2> location_list;

vector<float> radius_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);

	ofSeedRandom(2020080202);
	while (this->location_list.size() < 8) {

		auto location = glm::vec2(ofRandom(140, ofGetWidth() - 140), ofRandom(140, ofGetHeight() - 140));
		auto radius = ofRandom(50, 120);

		cout << location << ":" << radius << endl;
		auto flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
			this->radius_list.push_back(radius);

			cout << this->location_list.size() << endl;
		}
	}

	while (this->location_list.size() < 20) {

		auto location = glm::vec2(ofRandom(100, ofGetWidth() - 100), ofRandom(100, ofGetHeight() - 100));
		auto radius = ofRandom(30, 60);
		auto flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
			this->radius_list.push_back(radius * 1.2);

			cout << this->location_list.size() << endl;
		}
	}

	while (this->location_list.size() < 36) {

		auto location = glm::vec2(ofRandom(100, ofGetWidth() - 100), ofRandom(100, ofGetHeight() - 100));
		auto radius = ofRandom(10, 20);
		auto flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
			this->radius_list.push_back(radius * 1.2);

			cout << this->location_list.size() << endl;
		}
	}
}

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

	ofSeedRandom(39);
}

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

	ofColor color;
	vector<ofColor> color_list;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	for (auto hex : hex_list) {

		color.setHex(hex);
		color_list.push_back(color);
	}

	auto head_size = 4;
	for (int m = 0; m < this->location_list.size(); m++) {

		ofPushMatrix();
		ofTranslate(this->location_list[m]);

		for (int k = 0; k < 5; k++) {

			ofColor color = color_list[(int)ofRandom(color_list.size())];

			ofMesh mesh;
			vector<glm::vec3> right, left, frame;
			auto noise_seed_deg = ofRandom(1000);
			auto noise_seed_radius = ofRandom(1000);

			glm::vec3 last_location;
			float last_theta;

			for (int i = 0; i < 15; i++) {

				auto noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i) * 0.001), 0, 1, -360, 360);
				auto noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i) * 0.01), 0, 1, this->radius_list[m] * -0.98, this->radius_list[m] * 0.98);
				auto next_noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i + 1) * 0.001), 0, 1, -360, 360);
				auto next_noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, this->radius_list[m] * -0.98, this->radius_list[m] * 0.98);

				auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);
				auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

				auto direction = next - location;
				auto theta = atan2(direction.y, direction.x);

				right.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));
				left.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

				last_location = location;
				last_theta = theta;
			}

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

				mesh.addVertex(left[i]);
				mesh.addVertex(right[i]);
			}

			for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

				mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);
				mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);
			}

			mesh.addVertex(last_location);
			int index = mesh.getNumVertices();
			for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

				mesh.addVertex(last_location + glm::vec3(head_size * 0.5 * cos(theta), head_size * 0.5 * sin(theta), 0));
				frame.push_back(last_location + glm::vec3(head_size * 0.5 * cos(theta), head_size * 0.5 * sin(theta), 0));
			}

			for (int i = index; i < mesh.getNumVertices() - 1; i++) {

				mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);
			}

			for (int deg = 0; deg < 360; deg += 30) {

				ofRotate(30);

				ofSetColor(color);
				mesh.draw();
			}
		}

		ofPopMatrix();
	}
}

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

ofSetLineWidth(2);

ofSeedRandom(2020080202);

while (this->location_list.size() < 8) {

auto location = glm::vec2(ofRandom(140, ofGetWidth() - 140), ofRandom(140, ofGetHeight() - 140));

auto radius = ofRandom(50, 120);

cout << location << ":" << radius << endl;

auto flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

this->radius_list.push_back(radius);

cout << this->location_list.size() << endl;

}

while (this->location_list.size() < 20) {

auto location = glm::vec2(ofRandom(100, ofGetWidth() - 100), ofRandom(100, ofGetHeight() - 100));

auto radius = ofRandom(30, 60);

auto flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

this->radius_list.push_back(radius * 1.2);

cout << this->location_list.size() << endl;

}

while (this->location_list.size() < 36) {

auto location = glm::vec2(ofRandom(100, ofGetWidth() - 100), ofRandom(100, ofGetHeight() - 100));

auto radius = ofRandom(10, 20);

auto flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

this->radius_list.push_back(radius * 1.2);

cout << this->location_list.size() << endl;

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofColor color;

vector<ofColor> color_list;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

for (auto hex : hex_list) {

color.setHex(hex);

color_list.push_back(color);

}

auto head_size = 4;

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

ofPushMatrix();

ofTranslate(this->location_list[m]);

for (int k = 0; k < 5; k++) {

ofColor color = color_list[(int)ofRandom(color_list.size())];

ofMesh mesh;

vector<glm::vec3> right, left, frame;

auto noise_seed_deg = ofRandom(1000);

auto noise_seed_radius = ofRandom(1000);

glm::vec3 last_location;

float last_theta;

for (int i = 0; i < 15; i++) {

auto noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i) * 0.001), 0, 1, -360, 360);

auto noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i) * 0.01), 0, 1, this->radius_list[m] * -0.98, this->radius_list[m] * 0.98);

auto next_noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i + 1) * 0.001), 0, 1, -360, 360);

auto next_noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, this->radius_list[m] * -0.98, this->radius_list[m] * 0.98);

auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);

auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

auto direction = next - location;

auto theta = atan2(direction.y, direction.x);

right.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));

left.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

last_location = location;

last_theta = theta;

}

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

mesh.addVertex(left[i]);

mesh.addVertex(right[i]);

}

for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);

mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);

}

mesh.addVertex(last_location);

int index = mesh.getNumVertices();

for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

mesh.addVertex(last_location + glm::vec3(head_size * 0.5 * cos(theta), head_size * 0.5 * sin(theta), 0));

frame.push_back(last_location + glm::vec3(head_size * 0.5 * cos(theta), head_size * 0.5 * sin(theta), 0));

}

for (int i = index; i < mesh.getNumVertices() - 1; i++) {

mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);

}

for (int deg = 0; deg < 360; deg += 30) {

ofRotate(30);

ofSetColor(color);

mesh.draw();

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200802

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2020年8月
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