2018年3月 – ページ 5 – プログラミング de 落描き

2018年3月19日2018年3月18日

3層スフィア openFrameworks

[ Video ]

[ About ]
高・平・低の3つの層を持つスフィアにしてみました。noise関数の値をif分岐で3つに分類して、層の高さの値として使っています。

openFrameworksにはIcoSphereクラスが用意されているので、球体の扱いは便利で助かります。

Icosphere – Wikipedia
https://en.wikipedia.org/wiki/Icosphere

おまけ – Processingのサンプルプログラム
https://processing.org/examples/icosahedra.html

[ 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 icoSphere;
};

#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 icoSphere;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofBackground(39);
	ofSetWindowTitle("Insta");
	
	ofEnableDepthTest();

	this->icoSphere.setRadius(250);
	this->icoSphere.setResolution(3);
}

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

}

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

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.1);
	ofRotateY(ofGetFrameNum() * 0.25);

	vector<ofMeshFace> triangles = icoSphere.getMesh().getUniqueFaces();
	for (int i = 0; i < triangles.size(); i++) {

		ofPoint avg = (triangles[i].getVertex(0) + triangles[i].getVertex(1) + triangles[i].getVertex(2)) / 3;

		float noise_value = ofNoise(avg.x * 0.002, avg.y * 0.002, avg.z * 0.002, ofGetFrameNum() * 0.005);
		if (noise_value < 0.45) {

			noise_value = 0.4;
		}
		else if (noise_value > 0.7) {

			noise_value = 0.55;
		}
		else {

			noise_value = 0.5;
		}

		ofMesh mesh;

		mesh.addVertex(ofPoint(0, 0, 0));
		mesh.addVertex(triangles[i].getVertex(0) * noise_value);
		mesh.addVertex(triangles[i].getVertex(1) * noise_value);
		mesh.addVertex(triangles[i].getVertex(2) * noise_value);

		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);

		ofSetColor(39);
		mesh.drawFaces();

		ofSetColor(239);
		mesh.drawWireframe();
	}

	this->cam.end();
}


//========================================================================
int main() {

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofBackground(39);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

this->icoSphere.setRadius(250);

this->icoSphere.setResolution(3);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.1);

ofRotateY(ofGetFrameNum() * 0.25);

vector<ofMeshFace> triangles = icoSphere.getMesh().getUniqueFaces();

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

ofPoint avg = (triangles[i].getVertex(0) + triangles[i].getVertex(1) + triangles[i].getVertex(2)) / 3;

float noise_value = ofNoise(avg.x * 0.002, avg.y * 0.002, avg.z * 0.002, ofGetFrameNum() * 0.005);

if (noise_value < 0.45) {

noise_value = 0.4;

}

else if (noise_value > 0.7) {

noise_value = 0.55;

}

else {

noise_value = 0.5;

}

ofMesh mesh;

mesh.addVertex(ofPoint(0, 0, 0));

mesh.addVertex(triangles[i].getVertex(0) * noise_value);

mesh.addVertex(triangles[i].getVertex(1) * noise_value);

mesh.addVertex(triangles[i].getVertex(2) * noise_value);

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);

ofSetColor(39);

mesh.drawFaces();

ofSetColor(239);

mesh.drawWireframe();

}

this->cam.end();

}

//========================================================================

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180318

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2018年3月18日2018年3月17日

らせん openFrameworks

[ Video ]

[ About ]
トーラスの座標上の線を結んだら綺麗なんじゃないか？という思い付きでやってみました。いい感じ。

トーラス
https://ja.wikipedia.org/wiki/%E3%83%88%E3%83%BC%E3%83%A9%E3%82%B9

[ Source ]

#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) {};
	
	ofEasyCam cam;

	ofPoint make_point(float radius, float small_radius, float deg, float small_deg);
};

#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) {};

ofEasyCam cam;

ofPoint make_point(float radius, float small_radius, float deg, float small_deg);

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(239);
	ofSetWindowTitle("Insta");
	ofEnableDepthTest();

	ofSetColor(39);
}

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

}

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

	this->cam.begin();
	ofRotateX(180);
	
	float radius = 350;
	float small_radius = 50;

	for (int deg = 0; deg <= 360; deg += 1) {

		ofPoint p1 = make_point(radius, small_radius, deg, deg * 8 + ofGetFrameNum());
		ofPoint p2 = make_point(radius, small_radius, deg, deg * 8 + ofGetFrameNum() + 180);

		ofDrawLine(p1, p2);
		ofDrawSphere(p1, 2);
		ofDrawSphere(p2, 2);
	}

	this->cam.end();
}

//--------------------------------------------------------------
ofPoint ofApp::make_point(float radius, float small_radius, float deg, float small_deg) {

	float x_1 = radius * cos(deg * DEG_TO_RAD);
	float y_1 = radius * sin(deg * DEG_TO_RAD);

	float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);
	float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

	float x = x_1 + x_2;
	float y = y_1 + y_2;
	float z = small_radius * sin(small_deg * DEG_TO_RAD);

	return ofPoint(x, y, z);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

ofSetColor(39);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

float radius = 350;

float small_radius = 50;

for (int deg = 0; deg <= 360; deg += 1) {

ofPoint p1 = make_point(radius, small_radius, deg, deg * 8 + ofGetFrameNum());

ofPoint p2 = make_point(radius, small_radius, deg, deg * 8 + ofGetFrameNum() + 180);

ofDrawLine(p1, p2);

ofDrawSphere(p1, 2);

ofDrawSphere(p2, 2);

}

this->cam.end();

}

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

ofPoint ofApp::make_point(float radius, float small_radius, float deg, float small_deg) {

float x_1 = radius * cos(deg * DEG_TO_RAD);

float y_1 = radius * sin(deg * DEG_TO_RAD);

float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);

float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

float x = x_1 + x_2;

float y = y_1 + y_2;

float z = small_radius * sin(small_deg * DEG_TO_RAD);

return ofPoint(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180317

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2018年3月17日2018年3月16日

UnknownBall openFrameworks

[ Video ]

[ About ]
思いつくままにコーディングしていたら、良く分からないものが出来上がりました。これは何でしょう？

ソースコードのハイライトは、色が異なる面が重なると描写が乱れるので、ofTranslate(point * -0.001)という超小手先の対応で何とかしている所。

[ 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 icoSphere;
};

#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 icoSphere;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofBackground(239);
	ofSetWindowTitle("Insta");
	ofEnableDepthTest();

	this->icoSphere.setRadius(250);
	this->icoSphere.setResolution(2);
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.1);
	ofRotateY(ofGetFrameNum() * 0.25);

	vector<ofMeshFace> triangles = icoSphere.getMesh().getUniqueFaces();
	for (int i = 0; i < triangles.size(); i++) {

		ofPoint avg = (triangles[i].getVertex(0) + triangles[i].getVertex(1) + triangles[i].getVertex(2)) / 3;
		float noise_value = ofNoise(avg.y * 0.005 + ofGetFrameNum() * 0.05);

		for (float roop_noise = 1.f; roop_noise > noise_value; roop_noise -= 0.2f) {

			ofMesh mesh;
			for (int v_index = 0; v_index < 3; v_index++) {

				ofPoint point = triangles[i].getVertex(v_index) - avg;
				mesh.addVertex(point * roop_noise);
			}

			ofPushMatrix();
			ofTranslate(avg);

			ofSetColor(239);
			mesh.drawWireframe();

			if (roop_noise == 1.f) {

				ofTranslate(avg * -0.001);
				ofSetColor(39);
				mesh.drawFaces();
			}
			else if (roop_noise - 0.2f < noise_value) {
			
				ofSetColor(239);
				mesh.drawFaces();
			}

			ofPopMatrix();
		}
	}

	this->cam.end();
}


//========================================================================
int main() {

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofBackground(239);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

this->icoSphere.setRadius(250);

this->icoSphere.setResolution(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.1);

ofRotateY(ofGetFrameNum() * 0.25);

vector<ofMeshFace> triangles = icoSphere.getMesh().getUniqueFaces();

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

ofPoint avg = (triangles[i].getVertex(0) + triangles[i].getVertex(1) + triangles[i].getVertex(2)) / 3;

float noise_value = ofNoise(avg.y * 0.005 + ofGetFrameNum() * 0.05);

for (float roop_noise = 1.f; roop_noise > noise_value; roop_noise -= 0.2f) {

ofMesh mesh;

for (int v_index = 0; v_index < 3; v_index++) {

ofPoint point = triangles[i].getVertex(v_index) - avg;

mesh.addVertex(point * roop_noise);

}

ofPushMatrix();

ofTranslate(avg);

ofSetColor(239);

mesh.drawWireframe();

if (roop_noise == 1.f) {

ofTranslate(avg * -0.001);

ofSetColor(39);

mesh.drawFaces();

}

else if (roop_noise - 0.2f < noise_value) {

ofSetColor(239);

mesh.drawFaces();

}

ofPopMatrix();

}

this->cam.end();

}

//========================================================================

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180316

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