プログラミング de 落描き

2019年12月7日

Changing radius of torus. openFrameworks

[ Video ]

[ About ]
トーラスの小さいほうの半径を可変。

Changing radius 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 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);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(315);

	int gon = 36;
	int u_span = 360 / gon;

	ofMesh face, frame;
	for (int v = 0; v <= 360; v += 5) {

		int index = face.getNumVertices() - gon;
		auto noise_value = ofMap(ofNoise(200 * cos(v * DEG_TO_RAD) * 0.0065, 200 * sin(v * DEG_TO_RAD) * 0.0065, ofGetFrameNum() * 0.01), 0, 1, 0.5, 1.5);

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

			face.addVertex(this->make_point(200, 50 * noise_value, u, v));
			frame.addVertex(this->make_point(200, 51 * noise_value, u, v));
		}

		if (index > -1) {

			for (int g = 0; g < gon; g++) {

				face.addIndex(index + g); face.addIndex(index + (g + 1) % gon); face.addIndex(index + g + gon);
				face.addIndex(index + (g + 1) % gon + gon); face.addIndex(index + (g + 1) % gon); face.addIndex(index + g + gon);

				frame.addIndex(index + g); frame.addIndex(index + (g + 1) % gon); frame.addIndex(index + g + gon);
				frame.addIndex(index + (g + 1) % gon + gon); frame.addIndex(index + (g + 1) % gon); frame.addIndex(index + g + gon);
			}
		}
	}

	ofSetColor(239);
	face.drawFaces();

	ofSetColor(39);
	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());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(315);

int gon = 36;

int u_span = 360 / gon;

ofMesh face, frame;

for (int v = 0; v <= 360; v += 5) {

int index = face.getNumVertices() - gon;

auto noise_value = ofMap(ofNoise(200 * cos(v * DEG_TO_RAD) * 0.0065, 200 * sin(v * DEG_TO_RAD) * 0.0065, ofGetFrameNum() * 0.01), 0, 1, 0.5, 1.5);

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

face.addVertex(this->make_point(200, 50 * noise_value, u, v));

frame.addVertex(this->make_point(200, 51 * noise_value, u, v));

}

if (index > -1) {

for (int g = 0; g < gon; g++) {

face.addIndex(index + g); face.addIndex(index + (g + 1) % gon); face.addIndex(index + g + gon);

face.addIndex(index + (g + 1) % gon + gon); face.addIndex(index + (g + 1) % gon); face.addIndex(index + g + gon);

frame.addIndex(index + g); frame.addIndex(index + (g + 1) % gon); frame.addIndex(index + g + gon);

frame.addIndex(index + (g + 1) % gon + gon); frame.addIndex(index + (g + 1) % gon); frame.addIndex(index + g + gon);

}

ofSetColor(239);

face.drawFaces();

ofSetColor(39);

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/Insta20191207

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2019年12月6日2019年12月6日

Line of cylinder. openFrameworks

[ Video ]

[ About ]
ラインによる円柱。

Line of cylinder.

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

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

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

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

	auto radius = 300;
	auto deg_span = 9;
	for (auto deg_start = 0; deg_start < 360; deg_start += deg_span + 1) {

		auto deg = deg_start;
		auto noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.002, radius * sin(deg_start * DEG_TO_RAD) * 0.002, ofGetFrameNum() * 0.008);
		auto max_height = ofMap(noise_value, 0.25, 0.75, 0, 1000);
		if (noise_value < 0.25) {

			max_height = 0;
		}
		else if (noise_value > 0.75) {

			max_height = 1000;
		}

		for (auto height = 0; height < max_height; height += 10) {

			int index = this->face.getNumVertices() - 2;

			this->face.addVertex(glm::vec3(radius * cos((deg) * DEG_TO_RAD), height, radius * sin((deg) * DEG_TO_RAD)));
			this->face.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height, radius * sin((deg + deg_span) * DEG_TO_RAD)));

			this->frame.addVertex(glm::vec3(radius * cos(deg * DEG_TO_RAD), height, radius * sin(deg * DEG_TO_RAD)));
			this->frame.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height, radius * sin((deg + deg_span) * DEG_TO_RAD)));

			if (height > 0) {

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

				this->frame.addIndex(index); this->frame.addIndex(index + 2);
				this->frame.addIndex(index + 1); this->frame.addIndex(index + 3);
			}
			else if (height == 0) {

				this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 1);
			}

			deg += 5;
		}

		if (max_height > 0) {

			this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 1);
		}
	}
}

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

	this->cam.begin();
	ofTranslate(0, -500, 0);

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

	ofSetColor(139, 139, 239);
	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(239);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

auto radius = 300;

auto deg_span = 9;

for (auto deg_start = 0; deg_start < 360; deg_start += deg_span + 1) {

auto deg = deg_start;

auto noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.002, radius * sin(deg_start * DEG_TO_RAD) * 0.002, ofGetFrameNum() * 0.008);

auto max_height = ofMap(noise_value, 0.25, 0.75, 0, 1000);

if (noise_value < 0.25) {

max_height = 0;

}

else if (noise_value > 0.75) {

max_height = 1000;

}

for (auto height = 0; height < max_height; height += 10) {

int index = this->face.getNumVertices() - 2;

this->face.addVertex(glm::vec3(radius * cos((deg) * DEG_TO_RAD), height, radius * sin((deg) * DEG_TO_RAD)));

this->face.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height, radius * sin((deg + deg_span) * DEG_TO_RAD)));

this->frame.addVertex(glm::vec3(radius * cos(deg * DEG_TO_RAD), height, radius * sin(deg * DEG_TO_RAD)));

this->frame.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height, radius * sin((deg + deg_span) * DEG_TO_RAD)));

if (height > 0) {

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

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

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

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

}

else if (height == 0) {

this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 1);

}

deg += 5;

}

if (max_height > 0) {

this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 1);

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(0, -500, 0);

ofSetColor(39);

this->face.drawFaces();

ofSetColor(139, 139, 239);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191206

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2019年12月5日2019年12月5日

Connect near points. openFrameworks

[ Video ]

[ About ]
2点が近ければ線、3点が近ければ面。

Connect near points.

[ 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::vec2 make_point(int len, int param);

	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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

glm::vec2 make_point(int len, int param);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

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

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

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

	for (int i = 0; i < 2; i++) {
	
		auto location = glm::vec3(this->make_point(ofRandom(50, 300), ofRandom(100)), -150);
		this->face.addVertex(location);
		this->frame.addVertex(location);
	}

	for (int i = this->face.getNumVertices() - 1; i >= 0; i--) {

		auto vertex = this->face.getVertex(i);
		vertex.z += 1;

		if (vertex.z < 150) {

			this->face.setVertex(i, vertex);
			this->frame.setVertex(i, vertex);
		}
		else {

			this->face.removeVertex(i);
			this->frame.removeVertex(i);
		}
	}

	for (int i = 0; i < this->face.getNumVertices(); i++) {

		vector<int> near_index;
		for (int k = 0; k < this->face.getNumVertices(); k++) {

			if (i == k) continue;

			if (glm::distance(this->frame.getVertex(i), this->frame.getVertex(k)) < 30) {

				near_index.push_back(k);
			}
		}

		for (int k = 0; k < near_index.size(); k++) {

			this->frame.addIndex(i);
			this->frame.addIndex(near_index[k]);

			for (int m = 0; m < near_index.size(); m++) {

				if (k == m) continue;

				if (glm::distance(this->frame.getVertex(near_index[k]), this->frame.getVertex(near_index[m])) < 30) {

					this->face.addIndex(i);
					this->face.addIndex(near_index[k]);
					this->face.addIndex(near_index[m]);
				}
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(270);
	ofRotateZ(ofGetFrameNum() * 0.5);

	ofSetColor(39);
	ofNoFill();

	ofDrawBox(glm::vec3(), 300);

	for (auto& vertex : this->frame.getVertices()) {

		ofDrawSphere(vertex, 1);
	}

	ofSetColor(39, 39, 239);
	this->face.drawFaces();

	ofSetColor(39);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec2 ofApp::make_point(int len, int param) {

	param = param % 100;
	if (param < 25) {

		return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);
	}
	else if (param < 50) {

		return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));
	}
	else if (param < 75) {

		return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);
	}
	else {

		return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));
	}
}

//--------------------------------------------------------------
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(239);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clearIndices();

this->frame.clearIndices();

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

auto location = glm::vec3(this->make_point(ofRandom(50, 300), ofRandom(100)), -150);

this->face.addVertex(location);

this->frame.addVertex(location);

}

for (int i = this->face.getNumVertices() - 1; i >= 0; i--) {

auto vertex = this->face.getVertex(i);

vertex.z += 1;

if (vertex.z < 150) {

this->face.setVertex(i, vertex);

this->frame.setVertex(i, vertex);

}

else {

this->face.removeVertex(i);

this->frame.removeVertex(i);

}

for (int i = 0; i < this->face.getNumVertices(); i++) {

vector<int> near_index;

for (int k = 0; k < this->face.getNumVertices(); k++) {

if (i == k) continue;

if (glm::distance(this->frame.getVertex(i), this->frame.getVertex(k)) < 30) {

near_index.push_back(k);

}

for (int k = 0; k < near_index.size(); k++) {

this->frame.addIndex(i);

this->frame.addIndex(near_index[k]);

for (int m = 0; m < near_index.size(); m++) {

if (k == m) continue;

if (glm::distance(this->frame.getVertex(near_index[k]), this->frame.getVertex(near_index[m])) < 30) {

this->face.addIndex(i);

this->face.addIndex(near_index[k]);

this->face.addIndex(near_index[m]);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

ofRotateZ(ofGetFrameNum() * 0.5);

ofSetColor(39);

ofNoFill();

ofDrawBox(glm::vec3(), 300);

for (auto& vertex : this->frame.getVertices()) {

ofDrawSphere(vertex, 1);

}

ofSetColor(39, 39, 239);

this->face.drawFaces();

ofSetColor(39);

this->frame.drawWireframe();

this->cam.end();

}

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

glm::vec2 ofApp::make_point(int len, int param) {

param = param % 100;

if (param < 25) {

return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);

}

else if (param < 50) {

return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));

}

else if (param < 75) {

return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);

}

else {

return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191205

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2019年12月
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