プログラミング de 落描き – ページ 645 – クリエイティブ・コーディングによる生成物とソース

2019年1月30日2019年2月21日

Noise apple. openFrameworks

[ Video ]

[ About ]
りんご局面に面を貼ってノイズでバラバラにする大人の遊び。数式は「数学デッサン教室描いて楽しむ数学のかたち」から引用

Make surface on apple surface. And moving by Perlin Noise.

[ 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_apple_point(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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

glm::vec3 make_apple_point(float u, float v);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2.5);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	float scale = 30;
	ofColor color;

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

	for (int v = 0; v < 360; v += 6) {

		glm::vec2 noise_point = glm::vec2(cos(v * DEG_TO_RAD), sin(v * DEG_TO_RAD));
		float noise_value = ofNoise(noise_point.x, noise_point.y, ofGetFrameNum() * 0.03);
		scale = noise_value > 0.65 ? ofMap(noise_value, 0.65, 1, 20, 30) : 20;

		int tmp_v = v;
		for (int u = -180; u <= 180 - 6; u += 6) {
			
			ofSetColor(239, 39, 39);
			ofBeginShape();
			ofVertex(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);
			ofVertex(this->make_apple_point((u - 9) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);
			ofVertex(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale);
			ofVertex(this->make_apple_point((u + 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale);
			ofEndShape();

			ofSetColor(39);
			ofDrawLine(this->make_apple_point((u + 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale, this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);
			ofDrawLine(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale, this->make_apple_point((u - 9) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

			tmp_v += 6;
		}
	}	

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_apple_point(float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち リンゴ局面 apple surface P.33 

	float x = (4 + 3.8 * cos(u)) * cos(v);
	float y = (4 + 3.8 * cos(u)) * sin(v);
	float z = -5 * log10(1 - 0.315 * u) + 5 * sin(u) + 2 * cos(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);

ofSetColor(39);

ofSetLineWidth(2.5);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

float scale = 30;

ofColor color;

this->cam.begin();

ofRotateX(-90);

for (int v = 0; v < 360; v += 6) {

glm::vec2 noise_point = glm::vec2(cos(v * DEG_TO_RAD), sin(v * DEG_TO_RAD));

float noise_value = ofNoise(noise_point.x, noise_point.y, ofGetFrameNum() * 0.03);

scale = noise_value > 0.65 ? ofMap(noise_value, 0.65, 1, 20, 30) : 20;

int tmp_v = v;

for (int u = -180; u <= 180 - 6; u += 6) {

ofSetColor(239, 39, 39);

ofBeginShape();

ofVertex(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

ofVertex(this->make_apple_point((u - 9) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

ofVertex(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale);

ofVertex(this->make_apple_point((u + 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale);

ofEndShape();

ofSetColor(39);

ofDrawLine(this->make_apple_point((u + 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale, this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

ofDrawLine(this->make_apple_point((u - 3) * DEG_TO_RAD, (tmp_v + 3) * DEG_TO_RAD) * scale, this->make_apple_point((u - 9) * DEG_TO_RAD, (tmp_v - 3) * DEG_TO_RAD) * scale);

tmp_v += 6;

}

this->cam.end();

}

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

glm::vec3 ofApp::make_apple_point(float u, float v) {

// 数学デッサン教室描いて楽しむ数学たちリンゴ局面 apple surface P.33

float x = (4 + 3.8 * cos(u)) * cos(v);

float y = (4 + 3.8 * cos(u)) * sin(v);

float z = -5 * log10(1 - 0.315 * u) + 5 * sin(u) + 2 * cos(u);

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190130

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2019年1月29日2019年1月30日

Apple surface. openFrameworks

[ Video ]

[ About ]
「数学デッサン教室描いて楽しむ数学のかたち」にある、りんご局面の数式を元にプログラミングでリンゴを描写

Lines on apple surface.

[ 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_apple_point(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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

glm::vec3 make_apple_point(float u, float v);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

}

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

	int scale = 30;

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

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

		int u_start = v * 5 + ofGetFrameNum();
		for (int u = u_start; u <= u_start + 330; u += 5) {

			int tmp_u = u % 360 - 180;
			if (tmp_u > -170 && tmp_u < 170) {
			
				ofDrawLine(this->make_apple_point(tmp_u * DEG_TO_RAD, v * DEG_TO_RAD) * scale, this->make_apple_point((tmp_u + 10) * DEG_TO_RAD, v * DEG_TO_RAD) * scale);
			}
		}

		ofDrawLine(this->make_apple_point(-180 * DEG_TO_RAD, v * DEG_TO_RAD) * scale, this->make_apple_point(-160 * DEG_TO_RAD, v * DEG_TO_RAD) * scale);
		ofDrawLine(this->make_apple_point(170 * DEG_TO_RAD, v * DEG_TO_RAD) * scale, this->make_apple_point(180 * DEG_TO_RAD, v * DEG_TO_RAD) * scale);

		int tmp_u = (u_start + 350) % 360 - 180;
		if (tmp_u > -170 && tmp_u < 170) {
		
			ofDrawSphere(this->make_apple_point(tmp_u * DEG_TO_RAD, v * DEG_TO_RAD) * scale, 5);
		}
	}	

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_apple_point(float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち リンゴ局面 apple surface P.33 

	float x = (4 + 3.8 * cos(u)) * cos(v);
	float y = (4 + 3.8 * cos(u)) * sin(v);
	float z = -5 * log10(1 - 0.315 * u) + 5 * sin(u) + 2 * cos(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);

ofSetColor(39);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

int scale = 30;

this->cam.begin();

ofRotateX(-90);

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

int u_start = v * 5 + ofGetFrameNum();

for (int u = u_start; u <= u_start + 330; u += 5) {

int tmp_u = u % 360 - 180;

if (tmp_u > -170 && tmp_u < 170) {

ofDrawLine(this->make_apple_point(tmp_u * DEG_TO_RAD, v * DEG_TO_RAD) * scale, this->make_apple_point((tmp_u + 10) * DEG_TO_RAD, v * DEG_TO_RAD) * scale);

}

ofDrawLine(this->make_apple_point(-180 * DEG_TO_RAD, v * DEG_TO_RAD) * scale, this->make_apple_point(-160 * DEG_TO_RAD, v * DEG_TO_RAD) * scale);

ofDrawLine(this->make_apple_point(170 * DEG_TO_RAD, v * DEG_TO_RAD) * scale, this->make_apple_point(180 * DEG_TO_RAD, v * DEG_TO_RAD) * scale);

int tmp_u = (u_start + 350) % 360 - 180;

if (tmp_u > -170 && tmp_u < 170) {

ofDrawSphere(this->make_apple_point(tmp_u * DEG_TO_RAD, v * DEG_TO_RAD) * scale, 5);

}

this->cam.end();

}

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

glm::vec3 ofApp::make_apple_point(float u, float v) {

// 数学デッサン教室描いて楽しむ数学たちリンゴ局面 apple surface P.33

float x = (4 + 3.8 * cos(u)) * cos(v);

float y = (4 + 3.8 * cos(u)) * sin(v);

float z = -5 * log10(1 - 0.315 * u) + 5 * sin(u) + 2 * cos(u);

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190129

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2019年1月28日2019年2月21日

Torus. openFrameworks

[ Video ]

[ About ]
昨日に引き続き「数学デッサン教室描いて楽しむ数学のかたち」から数式を引用しました。対の球体が小径を回転します。

Pair sphere rotating on coordinate on 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;
};

#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;

};

#include "ofApp.h"

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

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

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

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

}

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

	this->cam.begin();

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

		vector<glm::vec3> vertices_1;
		vector<glm::vec3> vertices_2;
		int u_start = v * 3 + ofGetFrameNum() * 2;

		color.setHsb(ofMap(v, 0, 360, 0, 255), 255, 230);
		ofSetColor(color);

		ofFill();
		ofDrawSphere(this->make_point(250, 50, (u_start) * DEG_TO_RAD, v * DEG_TO_RAD), 10);
		ofDrawSphere(this->make_point(250, 50, (u_start + 180) * DEG_TO_RAD, v * DEG_TO_RAD), 10);

		for (int u = u_start + 20; u <= u_start + 150; u += 10) {

			vertices_1.push_back(this->make_point(250, 50, u * DEG_TO_RAD, v * DEG_TO_RAD));
			vertices_2.push_back(this->make_point(250, 50, (u + 180) * DEG_TO_RAD, v * DEG_TO_RAD));
		}

		ofNoFill();

		ofBeginShape();
		ofVertices(vertices_1);
		ofEndShape();

		ofBeginShape();
		ofVertices(vertices_2);
		ofEndShape();
	}

	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

	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() {

}

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

void ofApp::draw() {

this->cam.begin();

ofColor color;

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

vector<glm::vec3> vertices_1;

vector<glm::vec3> vertices_2;

int u_start = v * 3 + ofGetFrameNum() * 2;

color.setHsb(ofMap(v, 0, 360, 0, 255), 255, 230);

ofSetColor(color);

ofFill();

ofDrawSphere(this->make_point(250, 50, (u_start) * DEG_TO_RAD, v * DEG_TO_RAD), 10);

ofDrawSphere(this->make_point(250, 50, (u_start + 180) * DEG_TO_RAD, v * DEG_TO_RAD), 10);

for (int u = u_start + 20; u <= u_start + 150; u += 10) {

vertices_1.push_back(this->make_point(250, 50, u * DEG_TO_RAD, v * DEG_TO_RAD));

vertices_2.push_back(this->make_point(250, 50, (u + 180) * DEG_TO_RAD, v * DEG_TO_RAD));

}

ofNoFill();

ofBeginShape();

ofVertices(vertices_1);

ofEndShape();

ofBeginShape();

ofVertices(vertices_2);

ofEndShape();

}

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

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/Insta20190128

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Amazon

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