triangle – ページ 4 – プログラミング de 落描き

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

2019年10月21日2019年10月21日

Sphere composed of triangular pyramids. openFrameworks

[ Video ]

[ About ]
三角錐で構成された球体。

Sphere composed of triangular pyramids.

[ 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;
	ofIcoSpherePrimitive ico_sphere;
	vector<ofMesh> mesh_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) {};

ofEasyCam cam;

ofIcoSpherePrimitive ico_sphere;

vector<ofMesh> mesh_list;

};

#include "ofApp.h"

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

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

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

	this->ico_sphere = ofIcoSpherePrimitive(150, 3);
}

//--------------------------------------------------------------
void ofApp::update() {
	
	this->mesh_list.clear();
	auto triangle_list = this->ico_sphere.getMesh().getUniqueFaces();

	for (auto& triangle : triangle_list) {

		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		auto noise_value = ofNoise(avg.x * 0.01, avg.y * 0.01, avg.z * 0.01, ofGetFrameNum() * 0.003);

		auto noise_radius = 150;
		if (noise_value > 0.7) {
		
			noise_radius += ofMap(noise_value, 0.7, 1, 0, 250);
		}

		ofMesh mesh;
		
		mesh.addVertex(glm::normalize(avg) * (noise_radius - 50));
		mesh.addVertex(glm::normalize(triangle.getVertex(0)) * noise_radius);
		mesh.addVertex(glm::normalize(triangle.getVertex(1)) * noise_radius);
		mesh.addVertex(glm::normalize(triangle.getVertex(2)) * noise_radius);

		mesh.addIndex(0);
		mesh.addIndex(1);
		mesh.addIndex(2);

		mesh.addIndex(0);
		mesh.addIndex(2);
		mesh.addIndex(3);

		mesh.addIndex(0);
		mesh.addIndex(1);
		mesh.addIndex(3);

		mesh.addIndex(1);
		mesh.addIndex(2);
		mesh.addIndex(3);

		this->mesh_list.push_back(mesh);
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);
	ofRotateX(ofGetFrameNum() * 0.25);

	for (auto& mesh : this->mesh_list) {

		ofSetColor(239);
		mesh.drawFaces();

		ofSetColor(39);
		mesh.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);

ofSetLineWidth(3);

ofEnableDepthTest();

this->ico_sphere = ofIcoSpherePrimitive(150, 3);

}

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

void ofApp::update() {

this->mesh_list.clear();

auto triangle_list = this->ico_sphere.getMesh().getUniqueFaces();

for (auto& triangle : triangle_list) {

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

auto noise_value = ofNoise(avg.x * 0.01, avg.y * 0.01, avg.z * 0.01, ofGetFrameNum() * 0.003);

auto noise_radius = 150;

if (noise_value > 0.7) {

noise_radius += ofMap(noise_value, 0.7, 1, 0, 250);

}

ofMesh mesh;

mesh.addVertex(glm::normalize(avg) * (noise_radius - 50));

mesh.addVertex(glm::normalize(triangle.getVertex(0)) * noise_radius);

mesh.addVertex(glm::normalize(triangle.getVertex(1)) * noise_radius);

mesh.addVertex(glm::normalize(triangle.getVertex(2)) * noise_radius);

mesh.addIndex(0);

mesh.addIndex(1);

mesh.addIndex(2);

mesh.addIndex(0);

mesh.addIndex(2);

mesh.addIndex(3);

mesh.addIndex(0);

mesh.addIndex(1);

mesh.addIndex(3);

mesh.addIndex(1);

mesh.addIndex(2);

mesh.addIndex(3);

this->mesh_list.push_back(mesh);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

ofRotateX(ofGetFrameNum() * 0.25);

for (auto& mesh : this->mesh_list) {

ofSetColor(239);

mesh.drawFaces();

ofSetColor(39);

mesh.drawWireframe();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191021

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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