openframeworks – ページ 656 – プログラミング de 落描き

2018年3月20日2018年3月19日

動画 de パズル openFrameworks OpenCV ofxBox2d

[ Video ]

[ About ]
OpenCV(画像処理系)とofxBox2d(2D物理エンジン)を組み合わせて、動画のパズルを作ってみました。

本当はBoxに画像を投影してBoxの向きの概念もある3D版を作って見たかったのですが、マウスで3Dのブロックを積み上げていく適切なユーザーインターフェースが思いつかず…VR/ARが盛んなUnityとかだと良いのがありそうですね。

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"
#include "ofFbo.h"
#include "opencv2/opencv.hpp"

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) {};

	ofFbo fbo;

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dRect>> rects;
	ofxBox2dEdge edge;

	cv::VideoCapture cap;
	cv::Size cap_size;

	float rect_size;
	vector<cv::Mat> frames;
	vector<ofImage*> images;
	vector<cv::Rect> cv_rects;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

#include "ofFbo.h"

#include "opencv2/opencv.hpp"

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) {};

ofFbo fbo;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dRect>> rects;

ofxBox2dEdge edge;

cv::VideoCapture cap;

cv::Size cap_size;

float rect_size;

vector<cv::Mat> frames;

vector<ofImage*> images;

vector<cv::Rect> cv_rects;

};

#include "ofApp.h"

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

	ofBackground(39);
	ofSetWindowTitle("Insta");

	this->cap.open("D:\\video\\image8.mp4");
	this->cap_size = cv::Size(1280, 720);
	ofSetFrameRate(this->cap.get(CV_CAP_PROP_FPS));

	this->box2d.init();
	this->box2d.setGravity(0, 10);
	this->box2d.createBounds();
	this->box2d.setFPS(30);
	this->box2d.registerGrabbing();

	this->rect_size = 80;
	for (int x = 480; x < ofGetWidth() - 480; x += this->rect_size) {

		for (int y = 160; y <= ofGetHeight() - 160; y += this->rect_size) {

			this->rects.push_back(shared_ptr<ofxBox2dRect>(new ofxBox2dRect));
			this->rects.back().get()->setPhysics(1.0, 0.1, 1.0);
			this->rects.back().get()->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), this->rect_size, this->rect_size);

			ofImage* image = new ofImage();
			image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);
			this->images.push_back(image);

			cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);
			this->frames.push_back(frame);

			cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);
			this->cv_rects.push_back(rect);
		}
	}

	this->edge = ofxBox2dEdge();
	this->edge.addVertex(ofVec2f(300, ofGetHeight() / 3 * 2));
	this->edge.addVertex(ofVec2f(ofGetWidth() - 300, ofGetHeight() / 3 * 2));
	this->edge.create(this->box2d.getWorld());

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
}

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

	cv::Mat src, frame;
	this->cap >> src;
	if (src.empty()) {

		cap.set(CV_CAP_PROP_POS_FRAMES, 1);
		return;
	}

	cv::resize(src, frame, this->cap_size);
	cv::cvtColor(frame, frame, CV_BGR2RGB);

	for (int i = 0; i < this->rects.size(); i++) {
	
		cv::Mat tmp_box_image(frame, this->cv_rects[i]);
		tmp_box_image.copyTo(this->frames[i]);
		this->images[i]->update();
	}

	this->box2d.update();

	this->fbo.begin();
	ofClear(0);

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

		ofPushMatrix();
		ofTranslate(this->rects[i].get()->getPosition().x, this->rects[i].get()->getPosition().y);
		ofRotate(this->rects[i].get()->getRotation());

		this->images[i]->draw(-this->rect_size / 2, -this->rect_size / 2);

		ofPopMatrix();
	}

	this->edge.draw();

	this->fbo.end();
}

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

	this->fbo.draw(0, 0);
}

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

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

100

101

#include "ofApp.h"

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

void ofApp::setup() {

ofBackground(39);

ofSetWindowTitle("Insta");

this->cap.open("D:\\video\\image8.mp4");

this->cap_size = cv::Size(1280, 720);

ofSetFrameRate(this->cap.get(CV_CAP_PROP_FPS));

this->box2d.init();

this->box2d.setGravity(0, 10);

this->box2d.createBounds();

this->box2d.setFPS(30);

this->box2d.registerGrabbing();

this->rect_size = 80;

for (int x = 480; x < ofGetWidth() - 480; x += this->rect_size) {

for (int y = 160; y <= ofGetHeight() - 160; y += this->rect_size) {

this->rects.push_back(shared_ptr<ofxBox2dRect>(new ofxBox2dRect));

this->rects.back().get()->setPhysics(1.0, 0.1, 1.0);

this->rects.back().get()->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), this->rect_size, this->rect_size);

ofImage* image = new ofImage();

image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);

this->images.push_back(image);

cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);

this->frames.push_back(frame);

cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

this->cv_rects.push_back(rect);

}

this->edge = ofxBox2dEdge();

this->edge.addVertex(ofVec2f(300, ofGetHeight() / 3 * 2));

this->edge.addVertex(ofVec2f(ofGetWidth() - 300, ofGetHeight() / 3 * 2));

this->edge.create(this->box2d.getWorld());

this->fbo.allocate(ofGetWidth(), ofGetHeight());

}

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

void ofApp::update() {

cv::Mat src, frame;

this->cap >> src;

if (src.empty()) {

cap.set(CV_CAP_PROP_POS_FRAMES, 1);

return;

}

cv::resize(src, frame, this->cap_size);

cv::cvtColor(frame, frame, CV_BGR2RGB);

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

cv::Mat tmp_box_image(frame, this->cv_rects[i]);

tmp_box_image.copyTo(this->frames[i]);

this->images[i]->update();

}

this->box2d.update();

this->fbo.begin();

ofClear(0);

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

ofPushMatrix();

ofTranslate(this->rects[i].get()->getPosition().x, this->rects[i].get()->getPosition().y);

ofRotate(this->rects[i].get()->getRotation());

this->images[i]->draw(-this->rect_size / 2, -this->rect_size / 2);

ofPopMatrix();

}

this->edge.draw();

this->fbo.end();

}

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

void ofApp::draw() {

this->fbo.draw(0, 0);

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180319

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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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