2019年10月 – ページ 6 – プログラミング de 落描き

2019年10月17日2019年10月17日

Gradation triangles. openFrameworks

[ Video ]

[ About ]
ofMeshにランダムな座標の頂点を加えて、近接する3点のIndexを追加していく。色はX座標で変化。

Gradation triangles.

[ 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) {};

	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) {};

ofMesh mesh;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofSeedRandom(39);

	this->mesh.clear();

	for (int i = 0; i < 800; i++) {

		auto location = glm::vec3(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, ofGetWidth() * -0.5, ofGetWidth() * 0.5),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, ofGetHeight() * -0.5, ofGetHeight() * 0.5),
			0);
		
		location = glm::normalize(location) * ofRandom(200, 350);
		this->mesh.addVertex(location);
		
		ofColor color;
		color.setHsb((int)ofMap(location.x, -350, 350, 240, 240 + 255) % 255, 255, 255, 32);
		this->mesh.addColor(color);
	}

	for (int i = 0; i < this->mesh.getVertices().size(); i++) {

		auto location = this->mesh.getVertices()[i];
		vector<int> near_index_list;
		for (int k = 0; k < this->mesh.getVertices().size(); k++) {

			auto other = this->mesh.getVertices()[k];
			auto distance = glm::distance(location, other);

			if (distance < 50) {

				near_index_list.push_back(k);
			}
		}

		if (near_index_list.size() >= 3) {

			this->mesh.addIndex(near_index_list[0]);
			this->mesh.addIndex(near_index_list[1]);
			this->mesh.addIndex(near_index_list[2]);
		}
	}

}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	this->mesh.draw();
	this->mesh.drawWireframe();
	this->mesh.drawVertices();

}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

for (int i = 0; i < 800; i++) {

auto location = glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, ofGetWidth() * -0.5, ofGetWidth() * 0.5),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, ofGetHeight() * -0.5, ofGetHeight() * 0.5),

0);

location = glm::normalize(location) * ofRandom(200, 350);

this->mesh.addVertex(location);

ofColor color;

color.setHsb((int)ofMap(location.x, -350, 350, 240, 240 + 255) % 255, 255, 255, 32);

this->mesh.addColor(color);

}

for (int i = 0; i < this->mesh.getVertices().size(); i++) {

auto location = this->mesh.getVertices()[i];

vector<int> near_index_list;

for (int k = 0; k < this->mesh.getVertices().size(); k++) {

auto other = this->mesh.getVertices()[k];

auto distance = glm::distance(location, other);

if (distance < 50) {

near_index_list.push_back(k);

}

if (near_index_list.size() >= 3) {

this->mesh.addIndex(near_index_list[0]);

this->mesh.addIndex(near_index_list[1]);

this->mesh.addIndex(near_index_list[2]);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

this->mesh.draw();

this->mesh.drawWireframe();

this->mesh.drawVertices();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/openFrameworks20191017

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2019年10月16日2019年10月16日

Colorfull torus. openFrameworks

[ Video ]

[ About ]
カラフルなトーラス。

Colorfull 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 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 mesh;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofEnableDepthTest();
}

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

	this->mesh.clear();

	auto R = 100.f;
	auto r = 20.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++) {

		float angle = (i * 5) * DEG_TO_RAD;
		auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 0, 1));
		
		color_1.setHsb(ofMap((i + ofGetFrameNum()) % 36, 0, 36, 0, 255), 200, 255);
		color_2.setHsb(ofMap((i + 1 + ofGetFrameNum()) % 36, 0, 36, 0, 255), 200, 255);

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

			this->mesh.addVertex(glm::vec4(this->make_point(R, r, u, v), 0) * rotation);
			this->mesh.addColor(color_2);
			this->mesh.addVertex(glm::vec4(this->make_point(R, r, u + u_step, v + v_step), 0) * rotation);
			this->mesh.addColor(color_2);
			this->mesh.addVertex(glm::vec4(this->make_point(R, r, u, v + v_step), 0) * rotation);
			this->mesh.addColor(color_1);
			this->mesh.addVertex(glm::vec4(this->make_point(R, r, u - u_step, v), 0) * rotation);
			this->mesh.addColor(color_1);

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

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

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

			u += u_step;
		}
	}
}

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

	this->cam.begin();
	
	auto count = 0;
	for (auto x = -300; x <= 300; x += 300) {

		for (auto y = -300; y <= 300; y += 300) {

			ofPushMatrix();
			ofTranslate(x, y);
			ofRotateY(ofGetFrameNum() + count * 90);

			this->mesh.draw();

			ofPopMatrix();

			count++;
		}
	}

	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

101

102

103

104

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

}

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

void ofApp::update() {

this->mesh.clear();

auto R = 100.f;

auto r = 20.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++) {

float angle = (i * 5) * DEG_TO_RAD;

auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 0, 1));

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

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

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

this->mesh.addVertex(glm::vec4(this->make_point(R, r, u, v), 0) * rotation);

this->mesh.addColor(color_2);

this->mesh.addVertex(glm::vec4(this->make_point(R, r, u + u_step, v + v_step), 0) * rotation);

this->mesh.addColor(color_2);

this->mesh.addVertex(glm::vec4(this->make_point(R, r, u, v + v_step), 0) * rotation);

this->mesh.addColor(color_1);

this->mesh.addVertex(glm::vec4(this->make_point(R, r, u - u_step, v), 0) * rotation);

this->mesh.addColor(color_1);

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

this->mesh.addIndex(index - 3);

this->mesh.addIndex(index - 2);

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

this->mesh.addIndex(index);

this->mesh.addIndex(index - 3);

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

u += u_step;

}

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

void ofApp::draw() {

this->cam.begin();

auto count = 0;

for (auto x = -300; x <= 300; x += 300) {

for (auto y = -300; y <= 300; y += 300) {

ofPushMatrix();

ofTranslate(x, y);

ofRotateY(ofGetFrameNum() + count * 90);

this->mesh.draw();

ofPopMatrix();

count++;

}

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/openframeworks20191016

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2019年10月15日2019年10月15日

Gradation torus. openFrameworks

[ Video ]

[ About ]
グラデーションなトーラス。今更ながら(?)、ofMeshを触り始めました。

Gradation 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 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 mesh;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	auto R = 300.f;
	auto r = 80.f;
	auto u = 0.f;
	auto u_step = 10.f;
	auto v_step = 5.f;

	for (int i = 0; i < 18; i++) {

		float angle = (i * 10) * DEG_TO_RAD;
		auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 0, 1));

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

			this->mesh.addVertex(glm::vec4(this->make_point(R, r, u, v), 0) * rotation);
			this->mesh.addColor(ofColor(0));
			this->mesh.addVertex(glm::vec4(this->make_point(R, r, u + u_step, v + v_step), 0) * rotation);
			this->mesh.addColor(ofColor(0));
			this->mesh.addVertex(glm::vec4(this->make_point(R, r, u, v + v_step), 0) * rotation);
			this->mesh.addColor(ofColor(0));
			this->mesh.addVertex(glm::vec4(this->make_point(R, r, u - u_step, v), 0) * rotation);
			this->mesh.addColor(ofColor(0));

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

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

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

			u += u_step;
		}
	}
}

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

	ofColor color;
	for (auto i = 0; i < this->mesh.getVertices().size(); i += 1) {

		auto location = this->mesh.getVertices()[i];
		auto len = glm::length(location);

		color.setHsb(ofMap(ofNoise(location.x * 0.005, location.y * 0.005, location.z * 0.005, ofGetFrameNum() * 0.01), 0, 1, 72, 192), 200, 255);
		this->mesh.setColor(i, color);
	}
}

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

	this->cam.begin();

	this->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());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

auto R = 300.f;

auto r = 80.f;

auto u = 0.f;

auto u_step = 10.f;

auto v_step = 5.f;

for (int i = 0; i < 18; i++) {

float angle = (i * 10) * DEG_TO_RAD;

auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 0, 1));

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

this->mesh.addVertex(glm::vec4(this->make_point(R, r, u, v), 0) * rotation);

this->mesh.addColor(ofColor(0));

this->mesh.addVertex(glm::vec4(this->make_point(R, r, u + u_step, v + v_step), 0) * rotation);

this->mesh.addColor(ofColor(0));

this->mesh.addVertex(glm::vec4(this->make_point(R, r, u, v + v_step), 0) * rotation);

this->mesh.addColor(ofColor(0));

this->mesh.addVertex(glm::vec4(this->make_point(R, r, u - u_step, v), 0) * rotation);

this->mesh.addColor(ofColor(0));

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

this->mesh.addIndex(index - 3);

this->mesh.addIndex(index - 2);

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

this->mesh.addIndex(index);

this->mesh.addIndex(index - 3);

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

u += u_step;

}

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

void ofApp::update() {

ofColor color;

for (auto i = 0; i < this->mesh.getVertices().size(); i += 1) {

auto location = this->mesh.getVertices()[i];

auto len = glm::length(location);

color.setHsb(ofMap(ofNoise(location.x * 0.005, location.y * 0.005, location.z * 0.005, ofGetFrameNum() * 0.01), 0, 1, 72, 192), 200, 255);

this->mesh.setColor(i, color);

}

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

void ofApp::draw() {

this->cam.begin();

this->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/openframeworks20191015

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