2021年11月 – プログラミング de 落描き

2021年11月30日

Stop and move. Draw by openFrameworks

[ Video ]

[ About ]
RGBの残像。

RGB afterimage.

[ 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;
	ofMesh 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;

ofMesh frame;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofNoFill();
	ofSetLineWidth(3);
	//ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY);

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

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

	
}

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

	this->cam.begin();

	ofSeedRandom(39);

	this->frame.clear();
	vector<ofColor> color_list = { ofColor(255, 0, 0), ofColor(0, 255, 0), ofColor(0, 0, 255) };
	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

	for (int len = 100; len <= 400; len += 150) {

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

			auto noise_x = ofNoise(noise_seed.x, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);
			auto noise_y = ofNoise(noise_seed.y, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);
			auto noise_z = ofNoise(noise_seed.z, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);

			if (noise_x < 0.2) { noise_x = 0; }
			else if (noise_x < 0.4) { noise_x = ofMap(noise_x, 0.2, 0.4, 0, 0.5); }
			else if (noise_x < 0.6) { noise_x = 0.5; }
			else if (noise_x < 0.8) { noise_x = ofMap(noise_x, 0.6, 0.8, 0.5, 1.0); }
			else { noise_x = 1; }

			if (noise_y < 0.2) { noise_y = 0; }
			else if (noise_y < 0.4) { noise_y = ofMap(noise_y, 0.2, 0.4, 0, 0.5); }
			else if (noise_y < 0.6) { noise_y = 0.5; }
			else if (noise_y < 0.8) { noise_y = ofMap(noise_y, 0.6, 0.8, 0.5, 1.0); }
			else { noise_y = 1; }

			if (noise_z < 0.2) { noise_z = 0; }
			else if (noise_z < 0.4) { noise_z = ofMap(noise_z, 0.2, 0.4, 0, 0.5); }
			else if (noise_z < 0.6) { noise_z = 0.5; }
			else if (noise_z < 0.8) { noise_z = ofMap(noise_z, 0.6, 0.8, 0.5, 1.0); }
			else { noise_z = 1; }

			auto angle_x = ofMap(noise_x, 0, 1, -90, 90);
			auto angle_y = ofMap(noise_y, 0, 1, -90, 90);
			auto angle_z = ofMap(noise_z, 0, 1, -90, 90);

			ofSetColor(color_list[i]);

			ofPushMatrix();
			//ofRotateZ(angle_z);
			ofRotateY(angle_y);
			ofRotateX(angle_x);

			ofDrawBox(len);

			ofPopMatrix();
		}
	}

	this->frame.drawWireframe();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofNoFill();

ofSetLineWidth(3);

//ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY);

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

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofSeedRandom(39);

this->frame.clear();

vector<ofColor> color_list = { ofColor(255, 0, 0), ofColor(0, 255, 0), ofColor(0, 0, 255) };

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

for (int len = 100; len <= 400; len += 150) {

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

auto noise_x = ofNoise(noise_seed.x, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);

auto noise_y = ofNoise(noise_seed.y, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);

auto noise_z = ofNoise(noise_seed.z, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);

if (noise_x < 0.2) { noise_x = 0; }

else if (noise_x < 0.4) { noise_x = ofMap(noise_x, 0.2, 0.4, 0, 0.5); }

else if (noise_x < 0.6) { noise_x = 0.5; }

else if (noise_x < 0.8) { noise_x = ofMap(noise_x, 0.6, 0.8, 0.5, 1.0); }

else { noise_x = 1; }

if (noise_y < 0.2) { noise_y = 0; }

else if (noise_y < 0.4) { noise_y = ofMap(noise_y, 0.2, 0.4, 0, 0.5); }

else if (noise_y < 0.6) { noise_y = 0.5; }

else if (noise_y < 0.8) { noise_y = ofMap(noise_y, 0.6, 0.8, 0.5, 1.0); }

else { noise_y = 1; }

if (noise_z < 0.2) { noise_z = 0; }

else if (noise_z < 0.4) { noise_z = ofMap(noise_z, 0.2, 0.4, 0, 0.5); }

else if (noise_z < 0.6) { noise_z = 0.5; }

else if (noise_z < 0.8) { noise_z = ofMap(noise_z, 0.6, 0.8, 0.5, 1.0); }

else { noise_z = 1; }

auto angle_x = ofMap(noise_x, 0, 1, -90, 90);

auto angle_y = ofMap(noise_y, 0, 1, -90, 90);

auto angle_z = ofMap(noise_z, 0, 1, -90, 90);

ofSetColor(color_list[i]);

ofPushMatrix();

//ofRotateZ(angle_z);

ofRotateY(angle_y);

ofRotateX(angle_x);

ofDrawBox(len);

ofPopMatrix();

}

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211130

2021年11月29日

Rotate rectangles. Draw by openFrameworks

[ Video ]

[ About ]
回転する枠。

Rotating frame.

[ 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) {};

	void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, glm::highp_mat4 rotation);

	ofEasyCam cam;
	ofMesh face, 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 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) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, glm::highp_mat4 rotation);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(1);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

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

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

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

			glm::highp_mat4 rotation;
			auto noise_value = ofNoise(abs(x), y, ofGetFrameNum() * 0.003);
			rotation = glm::rotate(glm::mat4(), ofMap(noise_value, 0, 1, -360, 360) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

			this->setRingToMesh(this->face, this->frame, glm::vec3(x, y, 0), 0, 50, 10, rotation);
			for (auto radius = 60; radius <= 190; radius += 30) {

				glm::highp_mat4 rotation;
				auto noise_value = ofNoise(abs(x), y, (ofGetFrameNum() + radius) * 0.003);

				if (noise_value < 0.2) { noise_value = 0; }
				else if (noise_value < 0.4) { noise_value = ofMap(noise_value, 0.2, 0.4, 0, 0.5); }
				else if (noise_value < 0.6) { noise_value = 0.5; }
				else if (noise_value < 0.8) { noise_value = ofMap(noise_value, 0.6, 0.8, 0.5, 1.0); }
				else { noise_value = 1; }

				rotation = glm::rotate(glm::mat4(), ofMap(noise_value, 0, 1, -180, 180) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

				this->setRingToMesh(this->face, this->frame, glm::vec3(x, y, 0), radius, 28, 10, rotation);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(90);

	ofSetColor(0);
	this->face.draw();

	ofSetColor(255);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, glm::highp_mat4 rotation) {

	int deg_span = 90;
	for (int deg = 45; deg < 400; deg += deg_span) {

		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			vertex = glm::vec4(vertex + location, 0) * rotation;
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 3);
	}
}

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

ofSetLineWidth(1);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

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

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

glm::highp_mat4 rotation;

auto noise_value = ofNoise(abs(x), y, ofGetFrameNum() * 0.003);

rotation = glm::rotate(glm::mat4(), ofMap(noise_value, 0, 1, -360, 360) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

this->setRingToMesh(this->face, this->frame, glm::vec3(x, y, 0), 0, 50, 10, rotation);

for (auto radius = 60; radius <= 190; radius += 30) {

glm::highp_mat4 rotation;

auto noise_value = ofNoise(abs(x), y, (ofGetFrameNum() + radius) * 0.003);

if (noise_value < 0.2) { noise_value = 0; }

else if (noise_value < 0.4) { noise_value = ofMap(noise_value, 0.2, 0.4, 0, 0.5); }

else if (noise_value < 0.6) { noise_value = 0.5; }

else if (noise_value < 0.8) { noise_value = ofMap(noise_value, 0.6, 0.8, 0.5, 1.0); }

else { noise_value = 1; }

rotation = glm::rotate(glm::mat4(), ofMap(noise_value, 0, 1, -180, 180) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

this->setRingToMesh(this->face, this->frame, glm::vec3(x, y, 0), radius, 28, 10, rotation);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, glm::highp_mat4 rotation) {

int deg_span = 90;

for (int deg = 45; deg < 400; deg += deg_span) {

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

vertex = glm::vec4(vertex + location, 0) * rotation;

}

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211129

2021年11月28日

Three-layered structure. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォークの動きを円周の周囲で制限する。

Limit the random walk movement around the circumference.

[ 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<float> radius_list;
	vector<vector<glm::vec2>> base_location_group_list;
	vector<vector<glm::vec2>> log_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<float> radius_list;

vector<vector<glm::vec2>> base_location_group_list;

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

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofNoFill();
	ofSetCircleResolution(72);

	for (int radius = 50; radius <= 250; radius += 100) {

		vector<glm::vec2> base_location_group;
		for (float deg = 0; deg < 360; deg += 5) {

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

		this->base_location_group_list.push_back(base_location_group);
	}
}

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

	this->log_list.clear();

	for (auto& base_location_group : this->base_location_group_list) {
	
		for (auto& base_location : base_location_group) {

			vector<glm::vec2> log;
			log.push_back(glm::vec2(base_location));
			this->log_list.push_back(log);
		}
	}


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

		int k = 0;
		int group = i / 72;
		int radius = 50 + 100 * group;
		while (true) {

			auto deg = ofMap(ofNoise(glm::vec4(radius, this->log_list[i].back() * 0.0035, ofGetFrameNum() * ofMap(group, 0, 5, 0.003, 0.008) + k * 0.0005)), 0, 1, -360, 360);
			auto next = this->log_list[i].back() + glm::vec2(step * cos(deg * DEG_TO_RAD), step * sin(deg * DEG_TO_RAD));
			auto length = glm::length(next);

			if (length > radius - 40 && length < radius + 40) {

				this->log_list[i].push_back(next);
			}
			else {

				break;
			}

			k++;
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	
	ofColor color;
	for (int i = 0; i < this->log_list.size(); i++) {
		
		ofSetLineWidth(1.2);

		int group = i / 72;
		color.setHsb(ofMap(group, 0, 3, 0, 255), 255, 255);
		ofSetColor(color);
		
		if (this->log_list[i].size() > 1) {

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

		int radius = 50 + 100 * group;
		ofDrawCircle(glm::vec2(), radius);

		ofSetLineWidth(3);
		ofDrawCircle(glm::vec2(), radius - 40);
		ofDrawCircle(glm::vec2(), radius + 40);
	}
}

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

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

100

101

102

103

104

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofNoFill();

ofSetCircleResolution(72);

for (int radius = 50; radius <= 250; radius += 100) {

vector<glm::vec2> base_location_group;

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

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

base_location_group.push_back(location);

}

this->base_location_group_list.push_back(base_location_group);

}

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

void ofApp::update() {

this->log_list.clear();

for (auto& base_location_group : this->base_location_group_list) {

for (auto& base_location : base_location_group) {

vector<glm::vec2> log;

log.push_back(glm::vec2(base_location));

this->log_list.push_back(log);

}

int step = 1;

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

int k = 0;

int group = i / 72;

int radius = 50 + 100 * group;

while (true) {

auto deg = ofMap(ofNoise(glm::vec4(radius, this->log_list[i].back() * 0.0035, ofGetFrameNum() * ofMap(group, 0, 5, 0.003, 0.008) + k * 0.0005)), 0, 1, -360, 360);

auto next = this->log_list[i].back() + glm::vec2(step * cos(deg * DEG_TO_RAD), step * sin(deg * DEG_TO_RAD));

auto length = glm::length(next);

if (length > radius - 40 && length < radius + 40) {

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

}

else {

break;

}

k++;

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofColor color;

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

ofSetLineWidth(1.2);

int group = i / 72;

color.setHsb(ofMap(group, 0, 3, 0, 255), 255, 255);

ofSetColor(color);

if (this->log_list[i].size() > 1) {

ofNoFill();

ofBeginShape();

ofVertices(this->log_list[i]);

ofEndShape();

}

int radius = 50 + 100 * group;

ofDrawCircle(glm::vec2(), radius);

ofSetLineWidth(3);

ofDrawCircle(glm::vec2(), radius - 40);

ofDrawCircle(glm::vec2(), radius + 40);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211128

2021年11月
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