programming – ページ 405 – プログラミング de 落描き

2020年4月13日

Ring of Torus. openFrameworks

[ Video ]

[ About ]
Ring 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() {

	auto R = 200;
	auto r = 35;
	auto v_span = 8;
	auto u_span = 10;
	auto v = 0;

	this->cam.begin();
	ofRotateX(300);

	ofColor color;
	for (auto deg = 0; deg < 360; deg += v_span) {

		color.setHsb(ofMap(deg, 0, 360, 0, 255), 255, 255);

		ofMesh face, frame;
		frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

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

			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));

			int index = face.getNumVertices();
			face.addVertices(vertices);
			frame.addVertices(vertices);

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

			frame.addIndex(index + 0); frame.addIndex(index + 1);
			frame.addIndex(index + 1); frame.addIndex(index + 2);
			frame.addIndex(index + 2); frame.addIndex(index + 3);
			frame.addIndex(index + 3); frame.addIndex(index + 0);
		}

		ofPushMatrix();
		ofRotateZ(deg);

		int n = 360 / v_span;
		int frame_number = ofGetFrameNum() * 8;
		int param = frame_number % (360 * n) - (v_span * n * 0.5);
		if (deg * n >= param && deg * n < param + v_span * n){
		
			ofRotateY(frame_number);
		}
		else {

			param = (frame_number + 180 * n) % (360 * n) - (v_span * n * 0.5);
			if (deg * n >= param && deg * n < param + v_span * n) {

				ofRotateY(frame_number * -1);
			}
		}

		ofSetColor(239);
		face.drawFaces();

		ofSetColor(39);
		frame.drawWireframe();

		ofPopMatrix();
	}

	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(239);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto R = 200;

auto r = 35;

auto v_span = 8;

auto u_span = 10;

auto v = 0;

this->cam.begin();

ofRotateX(300);

ofColor color;

for (auto deg = 0; deg < 360; deg += v_span) {

color.setHsb(ofMap(deg, 0, 360, 0, 255), 255, 255);

ofMesh face, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

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

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));

int index = face.getNumVertices();

face.addVertices(vertices);

frame.addVertices(vertices);

face.addIndex(index + 0); face.addIndex(index + 1); face.addIndex(index + 2);

face.addIndex(index + 0); face.addIndex(index + 2); face.addIndex(index + 3);

frame.addIndex(index + 0); frame.addIndex(index + 1);

frame.addIndex(index + 1); frame.addIndex(index + 2);

frame.addIndex(index + 2); frame.addIndex(index + 3);

frame.addIndex(index + 3); frame.addIndex(index + 0);

}

ofPushMatrix();

ofRotateZ(deg);

int n = 360 / v_span;

int frame_number = ofGetFrameNum() * 8;

int param = frame_number % (360 * n) - (v_span * n * 0.5);

if (deg * n >= param && deg * n < param + v_span * n){

ofRotateY(frame_number);

}

else {

param = (frame_number + 180 * n) % (360 * n) - (v_span * n * 0.5);

if (deg * n >= param && deg * n < param + v_span * n) {

ofRotateY(frame_number * -1);

}

ofSetColor(239);

face.drawFaces();

ofSetColor(39);

frame.drawWireframe();

ofPopMatrix();

}

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/Insta20200413

2020年4月12日2020年4月12日

Sine wave, cosine wave, perlin noise wave. openFrameworks

[ Video ]

[ About ]
Sine wave, cosine wave, perlin noise wave.

[ 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) {};

	vector<glm::vec2> word_size_list;
	vector<vector<ofPath>> path_list;
};

#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) {};

vector<glm::vec2> word_size_list;

vector<vector<ofPath>> path_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofFill();
	ofSetColor(39);

	ofTrueTypeFont font;
	font.loadFont("fonts/Kazesawa-Bold.ttf", 28, true, true, true);

	vector<string> word_list = { "sin", "cos", "noise" };
	for (const auto& word : word_list) {

		auto word_size = glm::vec2(font.stringWidth(word), font.stringHeight(word));
		auto path = font.getStringAsPoints(word, true, false);

		this->word_size_list.push_back(word_size);
		this->path_list.push_back(path);
	}
}
//--------------------------------------------------------------
void ofApp::update() {

}

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

	for (int word_index = 0; word_index < this->word_size_list.size(); word_index++) {

		vector<glm::vec2> top_vertices, bottom_vertices;
		for (int x = 0; x <= 720; x += this->word_size_list[word_index].x * 1.05) {

			for (int path_index = 0; path_index < this->path_list[word_index].size(); path_index++) {

				auto outline = path_list[word_index][path_index].getOutline();

				ofBeginShape();
				for (int line_index = 0; line_index < outline.size(); line_index++) {

					if (line_index != 0) { ofNextContour(true); }

					auto vertices = outline[line_index].getVertices();
					for (int i = 0; i < vertices.size(); i++) {

						auto location = vertices[i] + glm::vec2(x, this->word_size_list[word_index].y * 0.5);
						auto y = 
							word_index == 0 ? ofMap(sin(location.x * 0.005 + ofGetFrameNum() * 0.025), -1, 1, 50, 670) :
							word_index == 1 ? ofMap(cos(location.x * 0.005 + ofGetFrameNum() * 0.025), -1, 1, 50, 670) : 
							ofMap(ofNoise(location.x * 0.005 + ofGetFrameNum() * 0.025), 0, 1, 50, 670);
						ofVertex(location + glm::vec2(0, y));
					}
				}
				ofEndShape(true);
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofFill();

ofSetColor(39);

ofTrueTypeFont font;

font.loadFont("fonts/Kazesawa-Bold.ttf", 28, true, true, true);

vector<string> word_list = { "sin", "cos", "noise" };

for (const auto& word : word_list) {

auto word_size = glm::vec2(font.stringWidth(word), font.stringHeight(word));

auto path = font.getStringAsPoints(word, true, false);

this->word_size_list.push_back(word_size);

this->path_list.push_back(path);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

for (int word_index = 0; word_index < this->word_size_list.size(); word_index++) {

vector<glm::vec2> top_vertices, bottom_vertices;

for (int x = 0; x <= 720; x += this->word_size_list[word_index].x * 1.05) {

for (int path_index = 0; path_index < this->path_list[word_index].size(); path_index++) {

auto outline = path_list[word_index][path_index].getOutline();

ofBeginShape();

for (int line_index = 0; line_index < outline.size(); line_index++) {

if (line_index != 0) { ofNextContour(true); }

auto vertices = outline[line_index].getVertices();

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

auto location = vertices[i] + glm::vec2(x, this->word_size_list[word_index].y * 0.5);

auto y =

word_index == 0 ? ofMap(sin(location.x * 0.005 + ofGetFrameNum() * 0.025), -1, 1, 50, 670) :

word_index == 1 ? ofMap(cos(location.x * 0.005 + ofGetFrameNum() * 0.025), -1, 1, 50, 670) :

ofMap(ofNoise(location.x * 0.005 + ofGetFrameNum() * 0.025), 0, 1, 50, 670);

ofVertex(location + glm::vec2(0, y));

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200412

2020年4月11日2020年4月11日

Sphere with a band. openFrameworks

[ Video ]https://junkiyoshi.com/openframeworks20200411/

[ About ]
帯による球体。

Sphere with a band.

[ 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;
};

#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;

};

#include "ofApp.h"	

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

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

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

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

}

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

	this->cam.begin();
	ofRotateX(270);

	auto radius = 300;
	for (auto theta = 6; theta <= 180 - 8; theta += 4) {

		vector<glm::vec3> vertices, sub_vertices;
		auto deg_start = ofGetFrameNum() * 3 + theta * 10; 
		for (auto deg = deg_start; deg <= deg_start + 180; deg += 1) {

			auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD) * sin(theta * DEG_TO_RAD),
				radius * sin(deg * DEG_TO_RAD) * sin(theta * DEG_TO_RAD),
				radius * cos(theta * DEG_TO_RAD));
			vertices.push_back(location);

			auto sub_location = glm::vec3(radius * cos(deg * DEG_TO_RAD) * sin((theta + 6) * DEG_TO_RAD),
				radius * sin(deg * DEG_TO_RAD) * sin((theta + 6) * DEG_TO_RAD),
				radius * cos((theta + 6) * DEG_TO_RAD));
			sub_vertices.push_back(sub_location);
		}

		if (vertices.size() > 0) {

			std::reverse(sub_vertices.begin(), sub_vertices.end());

			ofFill();
			ofSetColor(39);
			ofBeginShape();
			ofVertices(vertices);
			ofVertices(sub_vertices);
			ofEndShape();

			ofNoFill();
			ofSetColor(239);
			ofBeginShape();
			ofVertices(vertices);
			ofVertices(sub_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(239);

ofSetLineWidth(3);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

auto radius = 300;

for (auto theta = 6; theta <= 180 - 8; theta += 4) {

vector<glm::vec3> vertices, sub_vertices;

auto deg_start = ofGetFrameNum() * 3 + theta * 10;

for (auto deg = deg_start; deg <= deg_start + 180; deg += 1) {

auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD) * sin(theta * DEG_TO_RAD),

radius * sin(deg * DEG_TO_RAD) * sin(theta * DEG_TO_RAD),

radius * cos(theta * DEG_TO_RAD));

vertices.push_back(location);

auto sub_location = glm::vec3(radius * cos(deg * DEG_TO_RAD) * sin((theta + 6) * DEG_TO_RAD),

radius * sin(deg * DEG_TO_RAD) * sin((theta + 6) * DEG_TO_RAD),

radius * cos((theta + 6) * DEG_TO_RAD));

sub_vertices.push_back(sub_location);

}

if (vertices.size() > 0) {

std::reverse(sub_vertices.begin(), sub_vertices.end());

ofFill();

ofSetColor(39);

ofBeginShape();

ofVertices(vertices);

ofVertices(sub_vertices);

ofEndShape();

ofNoFill();

ofSetColor(239);

ofBeginShape();

ofVertices(vertices);

ofVertices(sub_vertices);

ofEndShape(true);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200411

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