openframeworks – ページ 53 – プログラミング de 落描き

2023年4月11日

Rotating circles. Draw by openFrameworks

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[ About ]
回転円。

[ 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) {};

	ofEasyCam cam;
};

#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) {};

ofEasyCam cam;

};

#include "ofApp.h"	

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

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

	ofBackground(39);
	ofSetColor(255);
	ofNoFill();
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	auto radius = 250;

	for (int i = 0; i < 20; i++) {

		auto noise_seed = ofRandom(1000);
		vector<glm::vec3> vertices;
		for (int deg = 0; deg < 360; deg += 1) {

			auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);
			auto rotate_deg = ofMap(ofNoise(noise_seed, vertex.x * 0.0003 + ofGetFrameNum() * 0.0005), 0, 1, -360, 360);
			auto rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

			vertex = glm::vec4(vertex, 0) * rotation;
			vertices.push_back(vertex);
		}

		ofBeginShape();
		ofVertices(vertices);
		ofEndShape(true);
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofSetColor(255);

ofNoFill();

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

auto radius = 250;

for (int i = 0; i < 20; i++) {

auto noise_seed = ofRandom(1000);

vector<glm::vec3> vertices;

for (int deg = 0; deg < 360; deg += 1) {

auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

auto rotate_deg = ofMap(ofNoise(noise_seed, vertex.x * 0.0003 + ofGetFrameNum() * 0.0005), 0, 1, -360, 360);

auto rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

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

vertices.push_back(vertex);

}

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230411

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2023年4月10日

Bamboo Shoot. Draw by openFrameworks

[ Video ]

[ About ]
たけのこにょっき！

[ 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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"	

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

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

	ofBackground(39);
	ofSetLineWidth(2);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	float R = 300;
	int v_span = 10;
	int u_span = 20;

	for (int v = 0; v < 360; v += v_span) {

		for (auto u = 0; u < 360; u += u_span) {

			auto noise_seed_1 = ofRandom(1000);
			auto noise_seed_2 = ofRandom(1000);
			auto r = 80.f;
			auto noise_r = r;
			auto noise_value = ofNoise(noise_seed_1, ofGetFrameNum() * 0.02);
			if (noise_value > 0.75) {

				auto random_noise_value = ofNoise(noise_seed_2, ofGetFrameNum() * 0.005);
				noise_r = 80.f + ofMap(random_noise_value, 0, 1, 0, 300) * ofMap(noise_value, 0.75, 1, 0, 1);
			}

			vector<glm::vec3> vertices;
			vertices.push_back(this->make_point(R, r, u, v - v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u + u_span, v - v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u + u_span, v + v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u, v + v_span * 0.5));

			vertices.push_back(this->make_point(R, noise_r, u + u_span * 0.5, v));

			int index = face.getNumVertices();
			this->face.addVertices(vertices);

			this->face.addIndex(index + 0); face.addIndex(index + 1); face.addIndex(index + 4);
			this->face.addIndex(index + 1); face.addIndex(index + 2); face.addIndex(index + 4);
			this->face.addIndex(index + 2); face.addIndex(index + 3); face.addIndex(index + 4);
			this->face.addIndex(index + 3); face.addIndex(index + 0); face.addIndex(index + 4);

			this->frame.addVertices(vertices);

			this->frame.addIndex(index + 0); this->frame.addIndex(index + 1);
			this->frame.addIndex(index + 1); this->frame.addIndex(index + 2);
			this->frame.addIndex(index + 2); this->frame.addIndex(index + 3);
			this->frame.addIndex(index + 3); this->frame.addIndex(index + 0);

			this->frame.addIndex(index + 0); this->frame.addIndex(index + 4);
			this->frame.addIndex(index + 1); this->frame.addIndex(index + 4);
			this->frame.addIndex(index + 2); this->frame.addIndex(index + 4);
			this->frame.addIndex(index + 3); this->frame.addIndex(index + 4);
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.666666);

	ofSetColor(39);
	this->face.draw();

	ofSetColor(239);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}

//--------------------------------------------------------------
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(39);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

float R = 300;

int v_span = 10;

int u_span = 20;

for (int v = 0; v < 360; v += v_span) {

for (auto u = 0; u < 360; u += u_span) {

auto noise_seed_1 = ofRandom(1000);

auto noise_seed_2 = ofRandom(1000);

auto r = 80.f;

auto noise_r = r;

auto noise_value = ofNoise(noise_seed_1, ofGetFrameNum() * 0.02);

if (noise_value > 0.75) {

auto random_noise_value = ofNoise(noise_seed_2, ofGetFrameNum() * 0.005);

noise_r = 80.f + ofMap(random_noise_value, 0, 1, 0, 300) * ofMap(noise_value, 0.75, 1, 0, 1);

}

vector<glm::vec3> vertices;

vertices.push_back(this->make_point(R, r, u, v - v_span * 0.5));

vertices.push_back(this->make_point(R, r, u + u_span, v - v_span * 0.5));

vertices.push_back(this->make_point(R, r, u + u_span, v + v_span * 0.5));

vertices.push_back(this->make_point(R, r, u, v + v_span * 0.5));

vertices.push_back(this->make_point(R, noise_r, u + u_span * 0.5, v));

int index = face.getNumVertices();

this->face.addVertices(vertices);

this->face.addIndex(index + 0); face.addIndex(index + 1); face.addIndex(index + 4);

this->face.addIndex(index + 1); face.addIndex(index + 2); face.addIndex(index + 4);

this->face.addIndex(index + 2); face.addIndex(index + 3); face.addIndex(index + 4);

this->face.addIndex(index + 3); face.addIndex(index + 0); face.addIndex(index + 4);

this->frame.addVertices(vertices);

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

this->frame.addIndex(index + 1); this->frame.addIndex(index + 2);

this->frame.addIndex(index + 2); this->frame.addIndex(index + 3);

this->frame.addIndex(index + 3); this->frame.addIndex(index + 0);

this->frame.addIndex(index + 0); this->frame.addIndex(index + 4);

this->frame.addIndex(index + 1); this->frame.addIndex(index + 4);

this->frame.addIndex(index + 2); this->frame.addIndex(index + 4);

this->frame.addIndex(index + 3); this->frame.addIndex(index + 4);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.666666);

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230410

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2023年4月9日

Yin – Yang packing. Draw by openFrameworks

[ Video ]

[ About ]
陰陽敷き詰め。

[ 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) {};

	void draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor fill_color, ofColor no_fill_color);

	float random_seed;
};

#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) {};

void draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor fill_color, ofColor no_fill_color);

float random_seed;

};

#include "ofApp.h"

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

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

	ofBackground(39);
}

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

	if (ofGetFrameNum() % 60 < 3) {

		this->random_seed = ofRandom(1000);
	}

	ofSeedRandom(this->random_seed);
}

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


	ofTranslate(ofGetWindowSize() * 0.5);

	auto number_of_sphere = 200;
	vector<glm::vec2> location_list;
	vector<float> radius_list;

	while (location_list.size() < number_of_sphere) {

		auto location = glm::vec2(ofRandom(-300, 300), ofRandom(-300, 300));
		auto radius = ofRandom(8, 70);
		bool flag = true;
		for (int i = 0; i < location_list.size(); i++) {

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

				flag = false;
				break;
			}
		}

		if (flag) {

			location_list.push_back(location);
			radius_list.push_back(radius);
		}
	}

	ofColor color_1, color_2;
	for (int i = 0; i < location_list.size(); i++) {

		int deg = ofRandom(360) + ofGetFrameNum() * ofRandom(1, 5);
		int hue = ofRandom(255);
		color_1.setHsb(hue, 150, 255);
		color_2.setHsb(hue, 255, 150);
		this->draw_MAGATAMA(location_list[i], radius_list[i] * 0.95, deg, color_1, color_2);
		this->draw_MAGATAMA(location_list[i], radius_list[i] * 0.95, deg + 180, color_2, color_1);
	}
}

//--------------------------------------------------------------
void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor fill_color, ofColor no_fill_color) {

	float len = radius * 0.5522;
	float deg = 0;

	ofPushMatrix();
	ofTranslate(location);
	ofRotate(rotate_deg);

	vector<glm::vec2> vertices;
	vector<pair<glm::vec2, glm::vec2>> handle_list;

	vertices.push_back(glm::vec2(0, 0));
	deg = 180;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius * 0.5, radius * -0.5));
	deg = 90;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(0, radius * -1));
	deg = 0;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len  * sin(deg * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius, 0));
	deg = 270;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * cos((deg + 180) * DEG_TO_RAD), len * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(0, radius));
	deg = 0;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius * -0.5, radius * 0.5));
	deg = 90;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	ofSetColor(fill_color);
	ofFill();
	ofBeginShape();
	for (int i = 0; i < vertices.size(); i++) {

		int n = (i + 1) % vertices.size();

		ofVertex(vertices[i]);
		ofBezierVertex(handle_list[i].second, handle_list[n].first, vertices[n]);
	}

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

		ofVertex(glm::vec2(0, radius * 0.5) + glm::vec2(radius * 0.2 * cos(deg * DEG_TO_RAD), radius * 0.2 * sin(deg * DEG_TO_RAD)));
	}
	ofEndShape(true);

	ofSetColor(no_fill_color);
	ofNoFill();
	ofBeginShape();
	for (int i = 0; i < vertices.size(); i++) {

		int n = (i + 1) % vertices.size();

		ofVertex(vertices[i]);
		ofBezierVertex(handle_list[i].second, handle_list[n].first, vertices[n]);
	}

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

		ofVertex(glm::vec2(0, radius * 0.5) + glm::vec2(radius * 0.2 * cos(deg * DEG_TO_RAD), radius * 0.2 * sin(deg * DEG_TO_RAD)));
	}
	ofEndShape(true);

	ofPopMatrix();
}

//--------------------------------------------------------------
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(39);

}

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

void ofApp::update() {

if (ofGetFrameNum() % 60 < 3) {

this->random_seed = ofRandom(1000);

}

ofSeedRandom(this->random_seed);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

auto number_of_sphere = 200;

vector<glm::vec2> location_list;

vector<float> radius_list;

while (location_list.size() < number_of_sphere) {

auto location = glm::vec2(ofRandom(-300, 300), ofRandom(-300, 300));

auto radius = ofRandom(8, 70);

bool flag = true;

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

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

flag = false;

break;

}

if (flag) {

location_list.push_back(location);

radius_list.push_back(radius);

}

ofColor color_1, color_2;

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

int deg = ofRandom(360) + ofGetFrameNum() * ofRandom(1, 5);

int hue = ofRandom(255);

color_1.setHsb(hue, 150, 255);

color_2.setHsb(hue, 255, 150);

this->draw_MAGATAMA(location_list[i], radius_list[i] * 0.95, deg, color_1, color_2);

this->draw_MAGATAMA(location_list[i], radius_list[i] * 0.95, deg + 180, color_2, color_1);

}

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

void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor fill_color, ofColor no_fill_color) {

float len = radius * 0.5522;

float deg = 0;

ofPushMatrix();

ofTranslate(location);

ofRotate(rotate_deg);

vector<glm::vec2> vertices;

vector<pair<glm::vec2, glm::vec2>> handle_list;

vertices.push_back(glm::vec2(0, 0));

deg = 180;