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2022年3月24日

Waving torus. Draw by openFrameworks

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うねるトーラス。

Waving torus.

[ 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) {};

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

	ofEasyCam cam;
	ofMesh face, 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) {};

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

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	float phi_deg_step = 2;
	float theta_deg_step = 8;

	float R = 250;
	float base_r = R * 0.25;
	float r = 0;

	for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

		for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

			auto index = this->face.getNumVertices();
			vector<glm::vec3> vertices;
			
			r = ofMap(ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5) * 0.006, ofGetFrameNum() * 0.03)), 0, 1, base_r * 0.2, base_r * 2);
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

			r = ofMap(ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5) * 0.006, ofGetFrameNum() * 0.03)), 0, 1, base_r * 0.2, base_r * 2);
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

			r = ofMap(ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5) * 0.006, ofGetFrameNum() * 0.03)), 0, 1, base_r * 0.2, base_r * 2);
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

			r = ofMap(ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5) * 0.006, ofGetFrameNum() * 0.03)), 0, 1, base_r * 0.2, base_r * 2);
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));


			this->face.addVertices(vertices);
			this->line.addVertices(vertices);

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

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

}

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

	this->cam.begin();

	ofSetColor(255);
	this->line.draw();

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

	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(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

float phi_deg_step = 2;

float theta_deg_step = 8;

float R = 250;

float base_r = R * 0.25;

float r = 0;

for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

auto index = this->face.getNumVertices();

vector<glm::vec3> vertices;

r = ofMap(ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5) * 0.006, ofGetFrameNum() * 0.03)), 0, 1, base_r * 0.2, base_r * 2);

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

r = ofMap(ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5) * 0.006, ofGetFrameNum() * 0.03)), 0, 1, base_r * 0.2, base_r * 2);

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

r = ofMap(ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5) * 0.006, ofGetFrameNum() * 0.03)), 0, 1, base_r * 0.2, base_r * 2);

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

r = ofMap(ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5) * 0.006, ofGetFrameNum() * 0.03)), 0, 1, base_r * 0.2, base_r * 2);

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

this->face.addVertices(vertices);

this->line.addVertices(vertices);

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

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

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

this->line.addIndex(index + 1); this->line.addIndex(index + 3);

this->line.addIndex(index + 0); this->line.addIndex(index + 2);

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

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(255);

this->line.draw();

ofSetColor(0);

this->face.draw();

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/Insta20220324

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2022年3月23日2022年3月23日

Rotating Magatama shape. Draw by openFrameworks

[ Video ]

[ About ]
回転する勾玉形状。

[ 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;

	void draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color);
};

#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;

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

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(3);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	
	for (int z = 0; z <= 480; z += 20) {

		ofPushMatrix();
		ofTranslate(0, 0, z);

		auto deg = ofMap(ofNoise(z * 0.002 + ofGetFrameNum() * 0.01), 0, 1, -720, 720);

		this->draw_MAGATAMA(glm::vec2(), 200, deg, ofColor(0));

		ofPopMatrix();
	}

	this->cam.end();
}


//--------------------------------------------------------------
void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor 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(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(ofColor(255, color.a));
	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(0);

ofSetLineWidth(3);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

for (int z = 0; z <= 480; z += 20) {

ofPushMatrix();

ofTranslate(0, 0, z);

auto deg = ofMap(ofNoise(z * 0.002 + ofGetFrameNum() * 0.01), 0, 1, -720, 720);

this->draw_MAGATAMA(glm::vec2(), 200, deg, ofColor(0));

ofPopMatrix();

}

this->cam.end();

}

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

void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor 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;