sphere – ページ 70 – プログラミング de 落描き

2018年5月17日2018年5月17日

Circle と Square openFrameworks

[ Video ]

[ About ]
Noise関数の値で円の座標と正方形の座標を行ったり来たり

[ 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) {};

	// Make Method
	ofPoint make_rect_point(float half_len, int deg);
};

#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) {};

// Make Method

ofPoint make_rect_point(float half_len, int deg);

};

#include "ofApp.h"

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

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

	ofSetLineWidth(2);
	ofSetColor(239, 0, 0);
}

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

}

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

	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	int radius = 150;
	int half_len = 300;
	for (int deg = 0; deg < 360; deg += 2) {

		ofPoint circle_point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		float noise_value = ofNoise(circle_point.x * 0.015, circle_point.y * 0.015, ofGetFrameNum() * 0.005);
		ofPoint rect_point = make_rect_point(half_len * noise_value , deg);
		if (rect_point.length() > radius) {

			rect_point = make_rect_point(half_len, deg);
		}
		else {

			rect_point = ofPoint(rect_point.length() * cos(deg * DEG_TO_RAD), rect_point.length() * sin(deg * DEG_TO_RAD));
		}

		ofDrawLine(circle_point, rect_point);
	}
}

//--------------------------------------------------------------
ofPoint ofApp::make_rect_point(float half_len, int deg) {

	int param = (deg + 45) / 90;
	ofPoint point;

	switch (param % 4) {

	case 0:

		return ofPoint(len, ofMap((deg + 45) % 90, 0, 89, -len, len));
	case 1:

		return  ofPoint(ofMap((deg + 45) % 90, 0, 89, len, -len), len);
	case 2:

		return ofPoint(-len, ofMap((deg + 45) % 90, 0, 89, len, -len));
	case 3:

		return ofPoint(ofMap((deg + 45) % 90, 0, 89, -len, len), -len);
	default:

		return ofPoint(0, 0);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetLineWidth(2);

ofSetColor(239, 0, 0);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

int radius = 150;

int half_len = 300;

for (int deg = 0; deg < 360; deg += 2) {

ofPoint circle_point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

float noise_value = ofNoise(circle_point.x * 0.015, circle_point.y * 0.015, ofGetFrameNum() * 0.005);

ofPoint rect_point = make_rect_point(half_len * noise_value , deg);

if (rect_point.length() > radius) {

rect_point = make_rect_point(half_len, deg);

}

else {

rect_point = ofPoint(rect_point.length() * cos(deg * DEG_TO_RAD), rect_point.length() * sin(deg * DEG_TO_RAD));

}

ofDrawLine(circle_point, rect_point);

}

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

ofPoint ofApp::make_rect_point(float half_len, int deg) {

int param = (deg + 45) / 90;

ofPoint point;

switch (param % 4) {

case 0:

return ofPoint(len, ofMap((deg + 45) % 90, 0, 89, -len, len));

case 1:

return ofPoint(ofMap((deg + 45) % 90, 0, 89, len, -len), len);

case 2:

return ofPoint(-len, ofMap((deg + 45) % 90, 0, 89, len, -len));

case 3:

return ofPoint(ofMap((deg + 45) % 90, 0, 89, -len, len), -len);

default:

return ofPoint(0, 0);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180517

2018年5月14日2018年5月15日

箱の中のSphere openFrameworks ofxBullet

[ Video ]

[ About ]
箱の中に閉じ込められている球体は、お互いに反発する力が働いており、一定の距離を保っています。今回は3次元の物理エンジンAddonであるofxBulletを0.10.0環境で動かしてみました。

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBullet.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) {};

	ofCamera cam;
	ofxBulletWorldRigid world;

	unique_ptr<ofxBulletCustomShape> bounds_shape;
	vector<unique_ptr<ofxBulletSphere>> spheres;
	vector<ofColor> spheres_color;
};

#pragma once

#include "ofMain.h"

#include "ofxBullet.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) {};

ofCamera cam;

ofxBulletWorldRigid world;

unique_ptr<ofxBulletCustomShape> bounds_shape;

vector<unique_ptr<ofxBulletSphere>> spheres;

vector<ofColor> spheres_color;

};

#include "ofApp.h"

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

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

	ofEnableDepthTest();

	// Initialize ofxBulletWorld
	this->cam.setPosition(ofVec3f(0, 3.f, -30.f));
	this->cam.lookAt(ofVec3f(0, 0, 0), ofVec3f(0, -1, 0));
	this->world.setup();
	this->world.enableGrabbing();
	this->world.setCamera(&this->cam);
	this->world.setGravity(ofVec3f());

	// Create Big Box
	ofVec3f start_location;
	ofPoint dimens;
	float bounds_width = 400;
	float h_width = bounds_width * 0.5;
	float depth = 10.;
	float h_depth = depth * 0.5;
	this->bounds_shape.reset(new ofxBulletCustomShape());
	this->bounds_shape->create(world.world, ofVec3f(0, 0, 0), 10.);
	for (int i = 0; i < 6; i++) {
		if (i == 0) { // ground //
			start_location.set(0., h_width + h_depth, 0.);
			dimens.set(bounds_width, depth, bounds_width);
		}
		else if (i == 1) { // back wall //
			start_location.set(0, 0, h_width + h_depth);
			dimens.set(bounds_width, bounds_width, depth);
		}
		else if (i == 2) { // right wall //
			start_location.set(h_width + h_depth, 0, 0.);
			dimens.set(depth, bounds_width, bounds_width);
		}
		else if (i == 3) { // left wall //
			start_location.set(-h_width - h_depth, 0, 0.);
			dimens.set(depth, bounds_width, bounds_width);
		}
		else if (i == 4) { // ceiling //
			start_location.set(0, -h_width - h_depth, 0.);
			dimens.set(bounds_width, depth, bounds_width);
		}
		else if (i == 5) { // front wall //
			start_location.set(0, 0, -h_width - h_depth);
			dimens.set(bounds_width, bounds_width, depth);
		}
		btBoxShape* boxShape = ofBtGetBoxCollisionShape(dimens.x, dimens.y, dimens.z);
		this->bounds_shape->addShape(boxShape, start_location);
	}
	this->bounds_shape->add();

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

		unique_ptr<ofxBulletSphere> sphere(new ofxBulletSphere);
		float size = ofRandom(8, 30);
		sphere->create(this->world.world, ofVec3f(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100)), 1, size);
		sphere->setRestitution(1.0);
		sphere->add();
		this->spheres.push_back(move(sphere));

		ofColor color;
		color.setHsb(ofRandom(255), 239, 239);
		this->spheres_color.push_back(color);
	}
}

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

	// Big Box Moving To Center 
	if (!ofGetMousePressed()) {

		ofVec3f diff = ofVec3f(0, 0, 0) - bounds_shape->getPosition();
		diff *= 500.f;
		bounds_shape->applyCentralForce(diff);
	}

	// Compute Spheres Relation
	for (int i = 0; i < this->spheres.size(); i++) {

		for (int j = i + 1; j < this->spheres.size(); j++) {

			float distance = this->spheres[i]->getPosition().distance(this->spheres[j]->getPosition());
			if (distance < 100) {

				ofVec3f diff = this->spheres[i]->getPosition() - this->spheres[j]->getPosition();
				ofMap(distance, 0, 100, 40, 0);
				this->spheres[i]->applyCentralForce(diff);
				this->spheres[j]->applyCentralForce(-diff);
			}
		}
	}

	this->world.update();
}

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

	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	// Draw Big Box
	ofNoFill();
	if (ofGetMousePressed()) {

		ofSetColor(39, 39, 239);
	}
	else {

		ofSetColor(39);
	}
	bounds_shape->transformGL();
	ofDrawBox(ofVec3f(0, 0, 0), 400);
	bounds_shape->restoreTransformGL();

	// Draw Sphere
	ofFill();
	for (int i = 0; i < this->spheres.size(); i++) {
		
		ofSetColor(this->spheres_color[i]);
		ofDrawSphere(this->spheres[i]->getPosition(), this->spheres[i]->getRadius());
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

// Initialize ofxBulletWorld

this->cam.setPosition(ofVec3f(0, 3.f, -30.f));

this->cam.lookAt(ofVec3f(0, 0, 0), ofVec3f(0, -1, 0));

this->world.setup();

this->world.enableGrabbing();

this->world.setCamera(&this->cam);

this->world.setGravity(ofVec3f());

// Create Big Box

ofVec3f start_location;

ofPoint dimens;

float bounds_width = 400;

float h_width = bounds_width * 0.5;

float depth = 10.;

float h_depth = depth * 0.5;

this->bounds_shape.reset(new ofxBulletCustomShape());

this->bounds_shape->create(world.world, ofVec3f(0, 0, 0), 10.);

for (int i = 0; i < 6; i++) {

if (i == 0) { // ground //

start_location.set(0., h_width + h_depth, 0.);

dimens.set(bounds_width, depth, bounds_width);

}

else if (i == 1) { // back wall //

start_location.set(0, 0, h_width + h_depth);

dimens.set(bounds_width, bounds_width, depth);

}

else if (i == 2) { // right wall //

start_location.set(h_width + h_depth, 0, 0.);

dimens.set(depth, bounds_width, bounds_width);

}

else if (i == 3) { // left wall //

start_location.set(-h_width - h_depth, 0, 0.);

dimens.set(depth, bounds_width, bounds_width);

}

else if (i == 4) { // ceiling //

start_location.set(0, -h_width - h_depth, 0.);

dimens.set(bounds_width, depth, bounds_width);

}

else if (i == 5) { // front wall //

start_location.set(0, 0, -h_width - h_depth);

dimens.set(bounds_width, bounds_width, depth);

}

btBoxShape* boxShape = ofBtGetBoxCollisionShape(dimens.x, dimens.y, dimens.z);

this->bounds_shape->addShape(boxShape, start_location);

}

this->bounds_shape->add();

// Create Spheres

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

unique_ptr<ofxBulletSphere> sphere(new ofxBulletSphere);

float size = ofRandom(8, 30);

sphere->create(this->world.world, ofVec3f(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100)), 1, size);

sphere->setRestitution(1.0);

sphere->add();

this->spheres.push_back(move(sphere));

ofColor color;

color.setHsb(ofRandom(255), 239, 239);

this->spheres_color.push_back(color);

}

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

void ofApp::update() {

// Big Box Moving To Center

if (!ofGetMousePressed()) {

ofVec3f diff = ofVec3f(0, 0, 0) - bounds_shape->getPosition();

diff *= 500.f;

bounds_shape->applyCentralForce(diff);

}

// Compute Spheres Relation

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

for (int j = i + 1; j < this->spheres.size(); j++) {

float distance = this->spheres[i]->getPosition().distance(this->spheres[j]->getPosition());

if (distance < 100) {

ofVec3f diff = this->spheres[i]->getPosition() - this->spheres[j]->getPosition();

ofMap(distance, 0, 100, 40, 0);

this->spheres[i]->applyCentralForce(diff);

this->spheres[j]->applyCentralForce(-diff);

}

this->world.update();

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

// Draw Big Box

ofNoFill();

if (ofGetMousePressed()) {

ofSetColor(39, 39, 239);

}

else {

ofSetColor(39);

}

bounds_shape->transformGL();

ofDrawBox(ofVec3f(0, 0, 0), 400);

bounds_shape->restoreTransformGL();

// Draw Sphere

ofFill();

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

ofSetColor(this->spheres_color[i]);

ofDrawSphere(this->spheres[i]->getPosition(), this->spheres[i]->getRadius());

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180514

2018年4月18日2018年4月17日

IcoSphereを変形 openFrameworks

[ Video ]

[ About ]
IcoSphereクラスから取得できる座標を変形させて遊んでいます。球体を構成する三角形(面)情報が取得できるので、中心座標を計算・図形で結んで、出っ張りを描写しています。

球体の半径を変化させているので、球体とトゲトゲの形に変形するのが楽しいですね。

[ 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(60);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	ofEnableDepthTest();
}

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

}

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

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

	float radius = 400 * ofNoise(ofGetFrameNum() * 0.01);
	ofIcoSpherePrimitive ico_sphere = ofIcoSpherePrimitive(radius , 2);
	vector<ofMeshFace> triangles = ico_sphere.getMesh().getUniqueFaces();
	for (int i = 0; i < triangles.size(); i++) {

		ofPoint average = (triangles[i].getVertex(0) + triangles[i].getVertex(1) + triangles[i].getVertex(2)) / 3;
		average = average.normalized() * 240;

		ofFill();
		ofSetColor(239);
		ofBeginShape();
		ofVertex(triangles[i].getVertex(0).x, triangles[i].getVertex(0).y, triangles[i].getVertex(0).z);
		ofVertex(triangles[i].getVertex(1).x, triangles[i].getVertex(1).y, triangles[i].getVertex(1).z);
		ofVertex(triangles[i].getVertex(2).x, triangles[i].getVertex(2).y, triangles[i].getVertex(2).z);
		ofEndShape(true);

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

			ofFill();
			ofSetColor(239);
			ofBeginShape();
			ofVertex(average);
			ofVertex(triangles[i].getVertex(v).x, triangles[i].getVertex(v).y, triangles[i].getVertex(v).z);
			ofVertex(triangles[i].getVertex((v + 1) % 3).x, triangles[i].getVertex((v + 1) % 3).y, triangles[i].getVertex((v + 1) % 3).z);
			ofEndShape(true);

			ofNoFill();
			ofSetColor(39, 198);
			ofBeginShape();
			ofVertex(average);
			ofVertex(triangles[i].getVertex(v).x, triangles[i].getVertex(v).y, triangles[i].getVertex(v).z);
			ofVertex(triangles[i].getVertex((v + 1) % 3).x, triangles[i].getVertex((v + 1) % 3).y, triangles[i].getVertex((v + 1) % 3).z);
			ofEndShape(true);
		}
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.1);

ofRotateY(ofGetFrameNum() * 0.25);

float radius = 400 * ofNoise(ofGetFrameNum() * 0.01);

ofIcoSpherePrimitive ico_sphere = ofIcoSpherePrimitive(radius , 2);

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

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

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

average = average.normalized() * 240;

ofFill();

ofSetColor(239);

ofBeginShape();

ofVertex(triangles[i].getVertex(0).x, triangles[i].getVertex(0).y, triangles[i].getVertex(0).z);

ofVertex(triangles[i].getVertex(1).x, triangles[i].getVertex(1).y, triangles[i].getVertex(1).z);

ofVertex(triangles[i].getVertex(2).x, triangles[i].getVertex(2).y, triangles[i].getVertex(2).z);

ofEndShape(true);

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

ofFill();

ofSetColor(239);

ofBeginShape();

ofVertex(average);

ofVertex(triangles[i].getVertex(v).x, triangles[i].getVertex(v).y, triangles[i].getVertex(v).z);

ofVertex(triangles[i].getVertex((v + 1) % 3).x, triangles[i].getVertex((v + 1) % 3).y, triangles[i].getVertex((v + 1) % 3).z);

ofEndShape(true);

ofNoFill();

ofSetColor(39, 198);

ofBeginShape();

ofVertex(average);

ofVertex(triangles[i].getVertex(v).x, triangles[i].getVertex(v).y, triangles[i].getVertex(v).z);

ofVertex(triangles[i].getVertex((v + 1) % 3).x, triangles[i].getVertex((v + 1) % 3).y, triangles[i].getVertex((v + 1) % 3).z);

ofEndShape(true);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180417

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