2019年10月 – ページ 3 – プログラミング de 落描き

2019年10月25日2019年10月24日

Lines on torus. openFrameworks

[ Video ]

[ About ]
トーラス上のポイントを線で結ぶ。

Lines 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 mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	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 mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

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(0);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->mesh.setMode(OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);
	this->mesh.clear();

	float R = 300;
	float r = 100;
	ofColor color;
	for (int i = 0; i < 800; i++) {

		float u = ofRandom(0, 360) + ofGetFrameNum() * ofRandom(0.5, 1);
		float v = ofRandom(0, 360);
		auto location = this->make_point(R, r, u, v);

		color.setHsb(ofRandom(255), 200, 255);

		this->mesh.addVertex(location);
		this->mesh.addColor(color);
	}

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

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

			if (i == k) { continue; }

			auto other = this->mesh.getVertex(k);
			auto distance = glm::distance(location, other);
			if (distance < 50) {

				this->mesh.addIndex(i);
				this->mesh.addIndex(k);
			}
		}
	}
}

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

	this->cam.begin();

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

		ofSetColor(this->mesh.getColor(i));
		ofDrawSphere(this->mesh.getVertex(i), 3.5);
	}
	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(0);

ofSetLineWidth(1.5);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->mesh.setMode(OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

float R = 300;

float r = 100;

ofColor color;

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

float u = ofRandom(0, 360) + ofGetFrameNum() * ofRandom(0.5, 1);

float v = ofRandom(0, 360);

auto location = this->make_point(R, r, u, v);

color.setHsb(ofRandom(255), 200, 255);

this->mesh.addVertex(location);

this->mesh.addColor(color);

}

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

auto location = this->mesh.getVertex(i);

vector<int> near_index_list;

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

if (i == k) { continue; }

auto other = this->mesh.getVertex(k);

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

if (distance < 50) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

}

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

void ofApp::draw() {

this->cam.begin();

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

ofSetColor(this->mesh.getColor(i));

ofDrawSphere(this->mesh.getVertex(i), 3.5);

}

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/Insta20191025

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2019年10月24日2019年10月24日

Lines. openFrameworks

[ Video ]

[ About ]
近い点通しで線を引く。距離で透明度が変化。

Lines.

[ 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(1.5);
	ofEnableDepthTest();

	this->mesh.setMode(OF_PRIMITIVE_LINES);
}

//--------------------------------------------------------------
void ofApp::update() {
	
	ofSeedRandom(39);

	this->mesh.clear();

	for (auto i = 0; i < 350; i++) {

		auto location = glm::vec3(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0003), 0, 1, -300, 300),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0003), 0, 1, -300, 300),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0003), 0, 1, -300, 300));

		this->mesh.addVertex(location);
		this->mesh.addColor(ofColor(255, 0));
	}

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

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

			if (i == k) { continue; }

			auto other = this->mesh.getVertex(k);
			auto distance = glm::distance(location, other);
			if (distance < 50) {

				this->mesh.addIndex(i);
				this->mesh.addIndex(k);

				auto distance_alpha = 255;
				if (distance > 35) {

					distance_alpha = ofMap(distance, 35, 50, 255, 0);
				}

				auto i_alpha = this->mesh.getColor(i).a;
				this->mesh.setColor(i, ofColor(39, distance_alpha > i_alpha ? distance_alpha : i_alpha));

				auto k_alpha = this->mesh.getColor(k).a;
				this->mesh.setColor(k, ofColor(39, distance_alpha > k_alpha ? distance_alpha : k_alpha));
			}
		}
	}
}

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

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

		ofSetColor(this->mesh.getColor(i));
		ofDrawSphere(this->mesh.getVertex(i), 3);
	}
	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(1.5);

ofEnableDepthTest();

this->mesh.setMode(OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

for (auto i = 0; i < 350; i++) {

auto location = glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0003), 0, 1, -300, 300),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0003), 0, 1, -300, 300));

this->mesh.addVertex(location);

this->mesh.addColor(ofColor(255, 0));

}

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

auto location = this->mesh.getVertex(i);

vector<int> near_index_list;

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

if (i == k) { continue; }

auto other = this->mesh.getVertex(k);

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

if (distance < 50) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

auto distance_alpha = 255;

if (distance > 35) {

distance_alpha = ofMap(distance, 35, 50, 255, 0);

}

auto i_alpha = this->mesh.getColor(i).a;

this->mesh.setColor(i, ofColor(39, distance_alpha > i_alpha ? distance_alpha : i_alpha));

auto k_alpha = this->mesh.getColor(k).a;

this->mesh.setColor(k, ofColor(39, distance_alpha > k_alpha ? distance_alpha : k_alpha));

}

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

void ofApp::draw() {

this->cam.begin();

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

ofSetColor(this->mesh.getColor(i));

ofDrawSphere(this->mesh.getVertex(i), 3);

}

this->mesh.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191024

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Amazon

[ Sponsor Link ]

2019年10月23日

Triangles on sphere. openFrameworks

[ Video ]

[ About ]
球体上の点をランダムに移動させて近接の3点で三角形を描写。ofMesh使うと描写が早い！

Triangles on sphere.

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

//--------------------------------------------------------------
void ofApp::update() {
	
	ofSeedRandom(39);

	this->mesh.clear();

	for (auto i = 0; i < 700; i++) {

		auto location = glm::vec3(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, -300, 300),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, -300, 300),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, -300, 300));

		location = glm::normalize(location) * 300;

		this->mesh.addVertex(location);
	}
	
	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 < 40) {

				near_index_list.push_back(k);
			}
		}

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

			for (int k = 0; k < near_index_list.size() - 2; k++) {

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

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.25);
	ofRotateX(ofGetFrameNum() * 0.125);
	
	ofSetColor(255);
	for (auto& location : this->mesh.getVertices()) {

		ofDrawSphere(location, 2);
	}
	this->mesh.drawWireframe();

	ofSetColor(255, 64);
	this->mesh.drawFaces();
	
	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

for (auto i = 0; i < 700; i++) {

auto location = glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, -300, 300),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, -300, 300));

location = glm::normalize(location) * 300;

this->mesh.addVertex(location);

}

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 < 40) {

near_index_list.push_back(k);

}

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

for (int k = 0; k < near_index_list.size() - 2; k++) {

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

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.25);

ofRotateX(ofGetFrameNum() * 0.125);

ofSetColor(255);

for (auto& location : this->mesh.getVertices()) {

ofDrawSphere(location, 2);

}

this->mesh.drawWireframe();

ofSetColor(255, 64);

this->mesh.drawFaces();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191023

[ほしいものリスト]
Amazon

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