プログラミング de 落描き

2019年11月22日

Difference in height. openFrameworks

[ Video ]

[ About ]
ノイズによる高低差。

Difference in height.

[ 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 mesh;
};

#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 mesh;

};

#include "ofApp.h"

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

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

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

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

	ofSeedRandom(39);

	this->mesh.clear();

	auto len = 300;
	auto span = 1;
	for (auto x = len * -0.5 + span * 0.5; x < len * 0.5; x += span) {

		for (auto y = len * -0.5 + span * 0.5; y < len * 0.5; y += span) {

			int z = ofMap(ofNoise(x * 0.015, y * 0.015 + ofGetFrameNum() * 0.02), 0, 1, 0, 50);
			z = z - z % 10;

			this->mesh.addVertex(glm::vec3(x, y, z));
			this->mesh.addColor(ofColor(ofMap(z, 0, 50, 39, 239)));
		}
	}

	int n = len / span;
	for(auto x = 1; x < n; x++){

		for (auto y = 1; y < n; y++) {

			this->mesh.addIndex(x + y * n); 
			this->mesh.addIndex((x - 1) + (y - 1) * n);
			this->mesh.addIndex((x - 1) + y * n);

			this->mesh.addIndex(x + y * n);
			this->mesh.addIndex((x - 1) + (y - 1) * n);
			this->mesh.addIndex(x + (y - 1) * n);
		}
	}

}

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

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

	this->mesh.draw();

	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() {

ofSeedRandom(39);

this->mesh.clear();

auto len = 300;

auto span = 1;

for (auto x = len * -0.5 + span * 0.5; x < len * 0.5; x += span) {

for (auto y = len * -0.5 + span * 0.5; y < len * 0.5; y += span) {

int z = ofMap(ofNoise(x * 0.015, y * 0.015 + ofGetFrameNum() * 0.02), 0, 1, 0, 50);

z = z - z % 10;

this->mesh.addVertex(glm::vec3(x, y, z));

this->mesh.addColor(ofColor(ofMap(z, 0, 50, 39, 239)));

}

int n = len / span;

for(auto x = 1; x < n; x++){

for (auto y = 1; y < n; y++) {

this->mesh.addIndex(x + y * n);

this->mesh.addIndex((x - 1) + (y - 1) * n);

this->mesh.addIndex((x - 1) + y * n);

this->mesh.addIndex(x + y * n);

this->mesh.addIndex((x - 1) + (y - 1) * n);

this->mesh.addIndex(x + (y - 1) * n);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(315);

this->mesh.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191122

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2019年11月21日2019年11月21日

Separation torus. openFrameworks

[ Video ]

[ About ]
トーラスをバラバラにする。

Separation 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_mesh, frame_mesh;
};

#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_mesh, frame_mesh;

};

#include "ofApp.h"

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

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

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

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

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

	ofSeedRandom(39);

	this->face_mesh.clear();
	this->frame_mesh.clear();

	auto R = 100.f;
	auto u = 0.f;
	auto u_step = 10.f;
	auto v_step = 5.f;

	ofColor color_1, color_2;
	for (int i = 0; i < 36; i++) {

		auto r = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 10, 30);

		float angle_z = (i * 5) * DEG_TO_RAD;
		auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

		color_1.setHsb(ofMap(i, 0, 36, 0, 255), 200, 255);
		color_2.setHsb(ofMap((i + 1) % 36, 0, 36, 0, 255), 200, 255);		

		for (auto v = 0; v < 360; v += v_step) {
		
			vector<glm::vec3> vertices{ 
				glm::vec4(this->make_point(R, r, u, v), 0) * rotation_z,
				glm::vec4(this->make_point(R, r, u + u_step, v + v_step), 0) * rotation_z,
				glm::vec4(this->make_point(R, r, u, v + v_step), 0) * rotation_z,
				glm::vec4(this->make_point(R, r, u - u_step, v), 0) * rotation_z
			};

			this->face_mesh.addVertices(vertices);
			this->frame_mesh.addVertices(vertices);

			auto index = this->face_mesh.getVertices().size() - 1;

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

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

			u += u_step;
		}
	}
}

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

	this->cam.begin();

	ofSetColor(239);
	this->face_mesh.draw();

	ofSetColor(39);
	this->frame_mesh.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());
}

100

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face_mesh.clear();

this->frame_mesh.clear();

auto R = 100.f;

auto u = 0.f;

auto u_step = 10.f;

auto v_step = 5.f;

ofColor color_1, color_2;

for (int i = 0; i < 36; i++) {

auto r = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 10, 30);

float angle_z = (i * 5) * DEG_TO_RAD;

auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

color_1.setHsb(ofMap(i, 0, 36, 0, 255), 200, 255);

color_2.setHsb(ofMap((i + 1) % 36, 0, 36, 0, 255), 200, 255);

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

vector<glm::vec3> vertices{

glm::vec4(this->make_point(R, r, u, v), 0) * rotation_z,

glm::vec4(this->make_point(R, r, u + u_step, v + v_step), 0) * rotation_z,

glm::vec4(this->make_point(R, r, u, v + v_step), 0) * rotation_z,

glm::vec4(this->make_point(R, r, u - u_step, v), 0) * rotation_z

};

this->face_mesh.addVertices(vertices);

this->frame_mesh.addVertices(vertices);

auto index = this->face_mesh.getVertices().size() - 1;

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

this->face_mesh.addIndex(index); this->face_mesh.addIndex(index - 3); this->face_mesh.addIndex(index - 1);

this->frame_mesh.addIndex(index - 3); this->frame_mesh.addIndex(index - 2);

this->frame_mesh.addIndex(index); this->frame_mesh.addIndex(index - 1);

u += u_step;

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(239);

this->face_mesh.draw();

ofSetColor(39);

this->frame_mesh.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/Insta20191121

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2019年11月20日2019年11月20日

Spiral cube. openFrameworks

[ Video ]

[ About ]
立方体でらせんを考えてみる。

Spiral cube.

[ 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(30);
	ofSetWindowTitle("openframeworks");

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

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

}

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

	this->cam.begin();

	auto len = 150;
	auto gap = 0.05;
	vector<glm::vec3> vertices;
	for (int i = 0; i < 100; i++) {

		if (i == 0) {

			vertices.push_back(glm::vec3(-len, len, -len));
			vertices.push_back(glm::vec3(len, len, -len));
			vertices.push_back(glm::vec3(len, len, len));
			vertices.push_back(glm::vec3(-len, len, len));

			vertices.push_back(glm::vec3(-len, -len, -len));
			vertices.push_back(glm::vec3(len, -len, -len));
			vertices.push_back(glm::vec3(len, -len, len));
			vertices.push_back(glm::vec3(-len, -len, len));
		}
		else {

			vector<glm::vec3> tmp;

			tmp.push_back((vertices[1] - vertices[0]) * gap + (vertices[4] - vertices[0]) * gap * 0.5 + vertices[0]);
			tmp.push_back((vertices[2] - vertices[1]) * gap + (vertices[5] - vertices[1]) * gap * 0.5 + vertices[1]);
			tmp.push_back((vertices[3] - vertices[2]) * gap + (vertices[6] - vertices[2]) * gap * 0.5 + vertices[2]);
			tmp.push_back((vertices[0] - vertices[3]) * gap + (vertices[7] - vertices[3]) * gap * 0.5 + vertices[3]);

			tmp.push_back((vertices[5] - vertices[4]) * gap + (vertices[0] - vertices[4]) * gap * 0.5 + vertices[4]);
			tmp.push_back((vertices[6] - vertices[5]) * gap + (vertices[1] - vertices[5]) * gap * 0.5 + vertices[5]);
			tmp.push_back((vertices[7] - vertices[6]) * gap + (vertices[2] - vertices[6]) * gap * 0.5 + vertices[6]);
			tmp.push_back((vertices[4] - vertices[7]) * gap + (vertices[3] - vertices[7]) * gap * 0.5 + vertices[7]);

			for (int i = 0; i < 8; i++) {

				ofDrawLine(vertices[i], tmp[i]);
			}

			vertices = tmp;
		}

		if (i == 0 || ofGetFrameNum() % 20 == i % 20) {

			ofSetLineWidth(2);

			ofDrawLine(vertices[0], vertices[1]);
			ofDrawLine(vertices[1], vertices[2]);
			ofDrawLine(vertices[2], vertices[3]);
			ofDrawLine(vertices[3], vertices[0]);

			ofDrawLine(vertices[4], vertices[5]);
			ofDrawLine(vertices[5], vertices[6]);
			ofDrawLine(vertices[6], vertices[7]);
			ofDrawLine(vertices[7], vertices[4]);

			ofDrawLine(vertices[0], vertices[4]);
			ofDrawLine(vertices[1], vertices[5]);
			ofDrawLine(vertices[2], vertices[6]);
			ofDrawLine(vertices[3], vertices[7]);

			for (auto& vertex : vertices) {

				ofDrawSphere(vertex, ofMap(i, 0, 100, 3, 0.5));
			}

			ofSetLineWidth(1);
		}
	}

	this->cam.end();
}

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

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

100

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

auto len = 150;

auto gap = 0.05;

vector<glm::vec3> vertices;

for (int i = 0; i < 100; i++) {

if (i == 0) {

vertices.push_back(glm::vec3(-len, len, -len));

vertices.push_back(glm::vec3(len, len, -len));

vertices.push_back(glm::vec3(len, len, len));

vertices.push_back(glm::vec3(-len, len, len));

vertices.push_back(glm::vec3(-len, -len, -len));

vertices.push_back(glm::vec3(len, -len, -len));

vertices.push_back(glm::vec3(len, -len, len));

vertices.push_back(glm::vec3(-len, -len, len));

}

else {

vector<glm::vec3> tmp;

tmp.push_back((vertices[1] - vertices[0]) * gap + (vertices[4] - vertices[0]) * gap * 0.5 + vertices[0]);

tmp.push_back((vertices[2] - vertices[1]) * gap + (vertices[5] - vertices[1]) * gap * 0.5 + vertices[1]);

tmp.push_back((vertices[3] - vertices[2]) * gap + (vertices[6] - vertices[2]) * gap * 0.5 + vertices[2]);

tmp.push_back((vertices[0] - vertices[3]) * gap + (vertices[7] - vertices[3]) * gap * 0.5 + vertices[3]);

tmp.push_back((vertices[5] - vertices[4]) * gap + (vertices[0] - vertices[4]) * gap * 0.5 + vertices[4]);

tmp.push_back((vertices[6] - vertices[5]) * gap + (vertices[1] - vertices[5]) * gap * 0.5 + vertices[5]);

tmp.push_back((vertices[7] - vertices[6]) * gap + (vertices[2] - vertices[6]) * gap * 0.5 + vertices[6]);

tmp.push_back((vertices[4] - vertices[7]) * gap + (vertices[3] - vertices[7]) * gap * 0.5 + vertices[7]);

for (int i = 0; i < 8; i++) {

ofDrawLine(vertices[i], tmp[i]);

}

vertices = tmp;

}

if (i == 0 || ofGetFrameNum() % 20 == i % 20) {

ofSetLineWidth(2);

ofDrawLine(vertices[0], vertices[1]);

ofDrawLine(vertices[1], vertices[2]);

ofDrawLine(vertices[2], vertices[3]);

ofDrawLine(vertices[3], vertices[0]);

ofDrawLine(vertices[4], vertices[5]);

ofDrawLine(vertices[5], vertices[6]);

ofDrawLine(vertices[6], vertices[7]);

ofDrawLine(vertices[7], vertices[4]);

ofDrawLine(vertices[0], vertices[4]);

ofDrawLine(vertices[1], vertices[5]);

ofDrawLine(vertices[2], vertices[6]);

ofDrawLine(vertices[3], vertices[7]);

for (auto& vertex : vertices) {

ofDrawSphere(vertex, ofMap(i, 0, 100, 3, 0.5));

}

ofSetLineWidth(1);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191120

[ほしいものリスト]
Amazon

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