数学デッサン教室 – ページ 12 – プログラミング de 落描き

2019年5月8日2019年5月8日

Pair of quarter torus. openFrameworks

[ Video ]

[ About ]
4分の1のトーラスペア

Pair of quarter 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 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;
};

#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;

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

}

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

	this->cam.begin();

	auto r = 100;
	auto R = 300;
	for (int i = 0; i < 2; i++) {

		for (auto v = 0; v < 360; v += 10) {

			auto u_start = ofGetFrameNum() + v * 4 + i * 180;
			for (auto u = u_start; u < u_start + 90; u += 20) {

				i == 0 ? ofSetColor(239) : ofSetColor(39);
				ofFill();

				ofBeginShape();
				ofVertex(this->make_point(R, r, u - 9.9, v - 4.9));
				ofVertex(this->make_point(R, r, u + 9.9, v - 4.9));
				ofVertex(this->make_point(R, r, u + 9.9, v + 4.9));
				ofVertex(this->make_point(R, r, u - 9.9, v + 4.9));
				ofEndShape(true);

				i == 0 ? ofSetColor(39) : ofSetColor(239);
				ofNoFill();

				ofBeginShape();
				ofVertex(this->make_point(R, r, u - 10.1, v - 5.1));
				ofVertex(this->make_point(R, r, u + 10.1, v - 5.1));
				ofVertex(this->make_point(R, r, u + 10.1, v + 5.1));
				ofVertex(this->make_point(R, r, u - 10.1, v + 5.1));
				ofEndShape(true);
			}
		}
	}

	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());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

auto r = 100;

auto R = 300;

for (int i = 0; i < 2; i++) {

for (auto v = 0; v < 360; v += 10) {

auto u_start = ofGetFrameNum() + v * 4 + i * 180;

for (auto u = u_start; u < u_start + 90; u += 20) {

i == 0 ? ofSetColor(239) : ofSetColor(39);

ofFill();

ofBeginShape();

ofVertex(this->make_point(R, r, u - 9.9, v - 4.9));

ofVertex(this->make_point(R, r, u + 9.9, v - 4.9));

ofVertex(this->make_point(R, r, u + 9.9, v + 4.9));

ofVertex(this->make_point(R, r, u - 9.9, v + 4.9));

ofEndShape(true);

i == 0 ? ofSetColor(39) : ofSetColor(239);

ofNoFill();

ofBeginShape();

ofVertex(this->make_point(R, r, u - 10.1, v - 5.1));

ofVertex(this->make_point(R, r, u + 10.1, v - 5.1));

ofVertex(this->make_point(R, r, u + 10.1, v + 5.1));

ofVertex(this->make_point(R, r, u - 10.1, v + 5.1));

ofEndShape(true);

}

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/Insta20190508

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2019年3月25日2019年3月25日

Surface of torus part 2. openFrameworks

[ Video ]

[ About ]
トーラス面遊びその2

SSurface of torus part 2.

[ 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;

};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofSetLineWidth(3);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	glm::vec3 point_base = glm::vec3(300 * cos((2 * ofGetFrameNum() % 360) * DEG_TO_RAD), 300 * sin((2 * ofGetFrameNum() % 360) * DEG_TO_RAD), 0);
	for (int v = 0; v < 360; v += 10) {

		for (int u = 0; u < 360; u += 20) {

			glm::vec3 point = glm::vec3(300 * cos(v * DEG_TO_RAD), 300 * sin(v * DEG_TO_RAD), 0);

			float r = 50;
			float noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01);
			float distance = glm::distance(point, point_base);
			if (distance < 200) {
				
				float noise_param = ofMap(distance, 200, 0, 0, 1);
				r += 150 * (noise_value * noise_param);
			}
			
			ofSetColor(39);
			ofFill();

			ofBeginShape();
			ofVertex(this->make_point(300, r, u - 10, v - 5));
			ofVertex(this->make_point(300, r, u + 10, v - 5));
			ofVertex(this->make_point(300, r, u + 10, v + 5));
			ofVertex(this->make_point(300, r, u - 10, v + 5));
			ofEndShape(true);

			ofSetColor(239);
			ofNoFill();

			ofBeginShape();
			ofVertex(this->make_point(300, r, u - 9.9, v - 4.9));
			ofVertex(this->make_point(300, r, u + 9.9, v - 4.9));
			ofVertex(this->make_point(300, r, u + 9.9, v + 4.9));
			ofVertex(this->make_point(300, r, u - 9.9, v + 4.9));
			ofEndShape(true);
		}
	}

	ofDrawSphere(point_base, 10);

	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;

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

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

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofSetLineWidth(3);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

glm::vec3 point_base = glm::vec3(300 * cos((2 * ofGetFrameNum() % 360) * DEG_TO_RAD), 300 * sin((2 * ofGetFrameNum() % 360) * DEG_TO_RAD), 0);

for (int v = 0; v < 360; v += 10) {

for (int u = 0; u < 360; u += 20) {

glm::vec3 point = glm::vec3(300 * cos(v * DEG_TO_RAD), 300 * sin(v * DEG_TO_RAD), 0);

float r = 50;

float noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01);

float distance = glm::distance(point, point_base);

if (distance < 200) {

float noise_param = ofMap(distance, 200, 0, 0, 1);

r += 150 * (noise_value * noise_param);

}

ofSetColor(39);

ofFill();

ofBeginShape();

ofVertex(this->make_point(300, r, u - 10, v - 5));

ofVertex(this->make_point(300, r, u + 10, v - 5));

ofVertex(this->make_point(300, r, u + 10, v + 5));

ofVertex(this->make_point(300, r, u - 10, v + 5));

ofEndShape(true);

ofSetColor(239);

ofNoFill();

ofBeginShape();

ofVertex(this->make_point(300, r, u - 9.9, v - 4.9));

ofVertex(this->make_point(300, r, u + 9.9, v - 4.9));

ofVertex(this->make_point(300, r, u + 9.9, v + 4.9));

ofVertex(this->make_point(300, r, u - 9.9, v + 4.9));

ofEndShape(true);

}

ofDrawSphere(point_base, 10);

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;

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

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

float 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/Insta20190325

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2019年3月24日2019年3月22日

Surface of torus. openFrameworks

[ Video ]

[ About ]
トーラスの面遊び。

Surface of 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 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;

};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(3);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	ofColor color;
	for (int v = 0; v < 360; v += 10) {

		for (int u = 0; u < 360; u += 20) {

			float noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01);
			float r = 50;
			if (noise_value > 0.65) {
			
				r = 50 + 100 * (noise_value - 0.65);
			}

			ofSetColor(239);
			ofFill();

			ofBeginShape();
			ofVertex(this->make_point(300, r, u - 10, v - 5));
			ofVertex(this->make_point(300, r, u + 10, v - 5));
			ofVertex(this->make_point(300, r, u + 10, v + 5));
			ofVertex(this->make_point(300, r, u - 10, v + 5));
			ofEndShape(true);

			ofSetColor(39);
			ofNoFill();

			ofBeginShape();
			ofVertex(this->make_point(300, r, u - 9.9, v - 4.9));
			ofVertex(this->make_point(300, r, u + 9.9, v - 4.9));
			ofVertex(this->make_point(300, r, u + 9.9, v + 4.9));
			ofVertex(this->make_point(300, r, u - 9.9, v + 4.9));
			ofEndShape(true);
		}
	}

	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;

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

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

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(3);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofColor color;

for (int v = 0; v < 360; v += 10) {

for (int u = 0; u < 360; u += 20) {

float noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01);

float r = 50;

if (noise_value > 0.65) {

r = 50 + 100 * (noise_value - 0.65);

}

ofSetColor(239);

ofFill();

ofBeginShape();

ofVertex(this->make_point(300, r, u - 10, v - 5));

ofVertex(this->make_point(300, r, u + 10, v - 5));

ofVertex(this->make_point(300, r, u + 10, v + 5));

ofVertex(this->make_point(300, r, u - 10, v + 5));

ofEndShape(true);

ofSetColor(39);

ofNoFill();

ofBeginShape();

ofVertex(this->make_point(300, r, u - 9.9, v - 4.9));

ofVertex(this->make_point(300, r, u + 9.9, v - 4.9));

ofVertex(this->make_point(300, r, u + 9.9, v + 4.9));

ofVertex(this->make_point(300, r, u - 9.9, v + 4.9));

ofEndShape(true);

}

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;

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

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

float 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/Insta20190324

[ほしいものリスト]
Amazon

[ Sponsor Link ]

月	火	水	木	金	土	日
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30