box2d – ページ 22 – プログラミング de 落描き

2017年10月21日2017年12月5日

Insta20171020

[ Video ]

[ About ]
kinectとOpenCVを使用してBox2dのオブジェクトを生成しています。
Z軸が閾値を超えた部分の色が反映されたRectが生成されます。
KinectSDK1.8 & OpenCV3.1をそれぞれ使っています

[ Source ]

#pragma once

#include <Windows.h>
#include <NuiApi.h>
#include <opencv2/opencv.hpp>
#include "ofMain.h"
#include "ofxBox2d.h"

#ifdef _DEBUG
#pragma comment(lib,"opencv_calib3d310d.lib")
#pragma comment(lib,"opencv_core310d.lib")
#pragma comment(lib,"opencv_features2d310d.lib")
#pragma comment(lib,"opencv_flann310d.lib")
#pragma comment(lib,"opencv_highgui310d.lib")
#pragma comment(lib,"opencv_imgcodecs310d.lib")
#pragma comment(lib,"opencv_imgproc310d.lib")
#pragma comment(lib,"opencv_ml310d.lib")
#pragma comment(lib,"opencv_objdetect310d.lib")
#pragma comment(lib,"opencv_photo310d.lib")
#pragma comment(lib,"opencv_shape310d.lib")
#pragma comment(lib,"opencv_stitching310d.lib")
#pragma comment(lib,"opencv_superres310d.lib")
#pragma comment(lib,"opencv_video310d.lib")
#pragma comment(lib,"opencv_videoio310d.lib")
#pragma comment(lib,"opencv_videostab310d.lib")
#else
#pragma comment(lib,"opencv_calib3d310.lib")
#pragma comment(lib,"opencv_core310.lib")
#pragma comment(lib,"opencv_features2d310.lib")
#pragma comment(lib,"opencv_flann310.lib")
#pragma comment(lib,"opencv_highgui310.lib")
#pragma comment(lib,"opencv_imgcodecs310.lib")
#pragma comment(lib,"opencv_imgproc310.lib")
#pragma comment(lib,"opencv_ml310.lib")
#pragma comment(lib,"opencv_objdetect310.lib")
#pragma comment(lib,"opencv_photo310.lib")
#pragma comment(lib,"opencv_shape310.lib")
#pragma comment(lib,"opencv_stitching310.lib")
#pragma comment(lib,"opencv_superres310.lib")
#pragma comment(lib,"opencv_video310.lib")
#pragma comment(lib,"opencv_videoio310.lib")
#pragma comment(lib,"opencv_videostab310.lib")
#endif

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) {}

	// Kinect
	INuiSensor* sensor;
	INuiCoordinateMapper* cordinate_mapper;
	HANDLE color_event;
	HANDLE color_handle;
	HANDLE depth_event;
	HANDLE depth_handle;
	HANDLE events[2];
	int width, height;

	// OpenCV
	cv::Mat frame;
	cv::Mat depth;

	// Box2d
	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dRect>> rects;
	vector<ofColor> rects_color;
	vector<float>	rects_life;

	// openFrameworks
	ofImage frame_img;
	vector<ofVec3f> locations;
	vector<ofColor> colors;
};

#pragma once

#include <Windows.h>

#include <NuiApi.h>

#include <opencv2/opencv.hpp>

#include "ofMain.h"

#include "ofxBox2d.h"

#ifdef _DEBUG

#pragma comment(lib,"opencv_calib3d310d.lib")

#pragma comment(lib,"opencv_core310d.lib")

#pragma comment(lib,"opencv_features2d310d.lib")

#pragma comment(lib,"opencv_flann310d.lib")

#pragma comment(lib,"opencv_highgui310d.lib")

#pragma comment(lib,"opencv_imgcodecs310d.lib")

#pragma comment(lib,"opencv_imgproc310d.lib")

#pragma comment(lib,"opencv_ml310d.lib")

#pragma comment(lib,"opencv_objdetect310d.lib")

#pragma comment(lib,"opencv_photo310d.lib")

#pragma comment(lib,"opencv_shape310d.lib")

#pragma comment(lib,"opencv_stitching310d.lib")

#pragma comment(lib,"opencv_superres310d.lib")

#pragma comment(lib,"opencv_video310d.lib")

#pragma comment(lib,"opencv_videoio310d.lib")

#pragma comment(lib,"opencv_videostab310d.lib")

#else

#pragma comment(lib,"opencv_calib3d310.lib")

#pragma comment(lib,"opencv_core310.lib")

#pragma comment(lib,"opencv_features2d310.lib")

#pragma comment(lib,"opencv_flann310.lib")

#pragma comment(lib,"opencv_highgui310.lib")

#pragma comment(lib,"opencv_imgcodecs310.lib")

#pragma comment(lib,"opencv_imgproc310.lib")

#pragma comment(lib,"opencv_ml310.lib")

#pragma comment(lib,"opencv_objdetect310.lib")

#pragma comment(lib,"opencv_photo310.lib")

#pragma comment(lib,"opencv_shape310.lib")

#pragma comment(lib,"opencv_stitching310.lib")

#pragma comment(lib,"opencv_superres310.lib")

#pragma comment(lib,"opencv_video310.lib")

#pragma comment(lib,"opencv_videoio310.lib")

#pragma comment(lib,"opencv_videostab310.lib")

#endif

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) {}

// Kinect

INuiSensor* sensor;

INuiCoordinateMapper* cordinate_mapper;

HANDLE color_event;

HANDLE color_handle;

HANDLE depth_event;

HANDLE depth_handle;

HANDLE events[2];

int width, height;

// OpenCV

cv::Mat frame;

cv::Mat depth;

// Box2d

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dRect>> rects;

vector<ofColor> rects_color;

vector<float> rects_life;

// openFrameworks

ofImage frame_img;

vector<ofVec3f> locations;

vector<ofColor> colors;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup(){
	ofSetFrameRate(30);
	ofBackground(255);
	ofSetWindowTitle("InstaKinect");
	ofEnableDepthTest();

	// Create Instance
	this->sensor = nullptr;
	HRESULT result = S_OK;
	result = NuiCreateSensorByIndex(0, &sensor);
	if (FAILED(result)) {
		cout << "Error : Create Sensor" << endl;
		return;
	}

	// Initialize
	result = sensor->NuiInitialize(NUI_INITIALIZE_FLAG_USES_COLOR | NUI_INITIALIZE_FLAG_USES_DEPTH);
	if (FAILED(result)) {
		cout << "Error : Initialise COLOR" << endl;
		return;
	}

	// Color
	this->color_event = INVALID_HANDLE_VALUE;
	this->color_handle = INVALID_HANDLE_VALUE;
	color_event = CreateEventW(nullptr, true, false, nullptr);
	result = sensor->NuiImageStreamOpen(NUI_IMAGE_TYPE_COLOR, NUI_IMAGE_RESOLUTION_640x480, 0, 2, color_event, &color_handle);
	if (FAILED(result)) {
		cout << "Error : Color Stream Open" << endl;
		return;
	}

	// Depth
	this->depth_event = INVALID_HANDLE_VALUE;
	this->depth_handle = INVALID_HANDLE_VALUE;
	depth_event = CreateEventW(nullptr, true, false, nullptr);
	result = sensor->NuiImageStreamOpen(NUI_IMAGE_TYPE_DEPTH, NUI_IMAGE_RESOLUTION_640x480, 0, 2, depth_event, &depth_handle);
	if (FAILED(result)) {
		cout << "Error : Depth Stream Open" << endl;
		return;
	}

	// Size
	unsigned long refWidth = 0;
	unsigned long refHeight = 0;
	NuiImageResolutionToSize(NUI_IMAGE_RESOLUTION_640x480, refWidth, refHeight);
	this->width = static_cast<int>(refWidth);
	this->height = static_cast<int>(refHeight);

	// Mapp
	this->cordinate_mapper = nullptr;
	result = sensor->NuiGetCoordinateMapper(&this->cordinate_mapper);
	if (FAILED(result)) {
		cout << "Error : Cordinate Mapper " << endl;
		return;
	}

	// OpenCV
	this->frame_img.allocate(this->width, this->height, OF_IMAGE_COLOR);
	this->frame = cv::Mat(this->frame_img.getHeight(), this->frame_img.getWidth(), CV_MAKETYPE(CV_8UC3, this->frame_img.getPixels().getNumChannels()), this->frame_img.getPixels().getData(), 0);
	this->depth = cv::Mat(height, width, CV_16UC1);

	this->events[0] = this->color_event;
	this->events[1] = this->depth_event;

	// Box2d
	this->box2d.init();
	this->box2d.setGravity(0, 10);
	this->box2d.createBounds();
	this->box2d.setFPS(30);
	this->box2d.enableGrabbing();

}

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

	HRESULT result = S_OK;

	// Color Table
	cv::Vec3b color[7];
	color[0] = cv::Vec3b(0, 0, 0);
	color[1] = cv::Vec3b(255, 0, 0);
	color[2] = cv::Vec3b(0, 255, 0);
	color[3] = cv::Vec3b(0, 0, 255);
	color[4] = cv::Vec3b(255, 255, 0);
	color[5] = cv::Vec3b(255, 0, 255);
	color[6] = cv::Vec3b(0, 255, 255);

	std::vector<NUI_COLOR_IMAGE_POINT> color_point(width * height);

	// Wait frame update.
	ResetEvent(this->color_event);
	ResetEvent(this->depth_event);
	WaitForMultipleObjects(ARRAYSIZE(this->events), this->events, true, INFINITE);

	// Get frame from color camera.
	NUI_IMAGE_FRAME colorImageFrame = { 0 };
	result = sensor->NuiImageStreamGetNextFrame(this->color_handle, 0, &colorImageFrame);
	if (FAILED(result)) {
		std::cerr << "Error : NuiImageStreamGetNextFrame( COLOR )" << std::endl;
		return;
	}

	// Get image data.
	INuiFrameTexture* pColorFrameTexture = colorImageFrame.pFrameTexture;
	NUI_LOCKED_RECT colorLockedRect;
	pColorFrameTexture->LockRect(0, &colorLockedRect, nullptr, 0);

	//// Get frame from depth camera.
	NUI_IMAGE_FRAME depthImageFrame = { 0 };
	result = this->sensor->NuiImageStreamGetNextFrame(this->depth_handle, 0, &depthImageFrame);
	if (FAILED(result)) {
		std::cerr << "Error : NuiImageStreamGetNextFrame( DEPTH )" << std::endl;
		return ;
	}

	// Get depth data.
	BOOL nearMode = false;
	INuiFrameTexture* pDepthFrameTexture = nullptr;
	this->sensor->NuiImageFrameGetDepthImagePixelFrameTexture(this->depth_handle, &depthImageFrame, &nearMode, &pDepthFrameTexture);
	NUI_LOCKED_RECT depthLockedRect;
	pDepthFrameTexture->LockRect(0, &depthLockedRect, nullptr, 0);

	// OpenCV(image)
	cv::Mat src = cv::Mat(this->height, this->width, CV_8UC4, reinterpret_cast<unsigned char*>(colorLockedRect.pBits));
	cv::cvtColor(src, this->frame, CV_BGRA2RGB);

	// OpenCV(depth)
	cv::Mat bufferMat = cv::Mat::zeros(height, width, CV_16UC1);
	NUI_DEPTH_IMAGE_PIXEL* depth_pixel = reinterpret_cast<NUI_DEPTH_IMAGE_PIXEL*>(depthLockedRect.pBits);
	this->cordinate_mapper->MapDepthFrameToColorFrame(NUI_IMAGE_RESOLUTION_640x480, width * height, depth_pixel, NUI_IMAGE_TYPE_COLOR, NUI_IMAGE_RESOLUTION_640x480, width * height, &color_point[0]);
	for (int y = 0; y < height; y++) {
		for (int x = 0; x < width; x++) {
			unsigned int index = y * width + x;
			bufferMat.at<unsigned short>(color_point[index].y, color_point[index].x) = depth_pixel[index].depth;
		}
	}
	bufferMat.copyTo(this->depth);
	//cv::imshow("depth", this->depth);

	// Release
	pColorFrameTexture->UnlockRect(0);
	pDepthFrameTexture->UnlockRect(0);
	this->sensor->NuiImageStreamReleaseFrame(this->color_handle, &colorImageFrame);
	this->sensor->NuiImageStreamReleaseFrame(this->depth_handle, &depthImageFrame);

	for (int i = this->rects.size() - 1; i > -1; i--) {
		this->rects_life[i] -= 2;

		if (this->rects_life[i] <= 0) {
			this->rects[i].get()->destroy();
			this->rects.erase(this->rects.begin() + i);
			this->rects_color.erase(this->rects_color.begin() + i);
			this->rects_life.erase(this->rects_life.begin() + i);
		}
	}

	this->box2d.update();
}

//--------------------------------------------------------------
void ofApp::draw(){
	this->locations.clear();
	this->colors.clear();

	for (int y = 0; y < this->depth.rows; y += 1) {
		for (int x = 0; x < this->depth.cols; x += 1) {
			int z = depth.at<unsigned short>(y, x);
			if (z != 0 && z < 1024) {
				if (y % 15 == 0 && x % 15 == 0) {
					if (z < 550) {
						this->rects.push_back(shared_ptr<ofxBox2dRect>(new ofxBox2dRect));
						this->rects.back().get()->setPhysics(3.0, 0.6, 0.1);
						this->rects.back().get()->setup(this->box2d.world, x, y, 15, 15);

						this->rects_color.push_back(ofColor(this->frame.at<cv::Vec3b>(y, x)[0], this->frame.at<cv::Vec3b>(y, x)[1], this->frame.at<cv::Vec3b>(y, x)[2]));
						this->rects_life.push_back(255);
					}
				}

				if (z > 550) {
					ofSetColor(ofColor(this->frame.at<cv::Vec3b>(y, x)[0], this->frame.at<cv::Vec3b>(y, x)[1], this->frame.at<cv::Vec3b>(y, x)[2]));
					ofDrawRectangle(x, y, 1, 1);
				}
			}
		}
	}

	for (int i = 0; i < this->rects.size(); i++) {
		ofSetColor(this->rects_color[i], this->rects_life[i]);
		this->rects[i].get()->draw();
	}

	this->box2d.drawGround();
}

//========================================================================
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup(){

ofSetFrameRate(30);

ofBackground(255);

ofSetWindowTitle("InstaKinect");

ofEnableDepthTest();

// Create Instance

this->sensor = nullptr;

HRESULT result = S_OK;

result = NuiCreateSensorByIndex(0, &sensor);

if (FAILED(result)) {

cout << "Error : Create Sensor" << endl;

return;

}

// Initialize

result = sensor->NuiInitialize(NUI_INITIALIZE_FLAG_USES_COLOR | NUI_INITIALIZE_FLAG_USES_DEPTH);

if (FAILED(result)) {

cout << "Error : Initialise COLOR" << endl;

return;

}

// Color

this->color_event = INVALID_HANDLE_VALUE;

this->color_handle = INVALID_HANDLE_VALUE;

color_event = CreateEventW(nullptr, true, false, nullptr);

result = sensor->NuiImageStreamOpen(NUI_IMAGE_TYPE_COLOR, NUI_IMAGE_RESOLUTION_640x480, 0, 2, color_event, &color_handle);

if (FAILED(result)) {

cout << "Error : Color Stream Open" << endl;

return;

}

// Depth

this->depth_event = INVALID_HANDLE_VALUE;

this->depth_handle = INVALID_HANDLE_VALUE;

depth_event = CreateEventW(nullptr, true, false, nullptr);

result = sensor->NuiImageStreamOpen(NUI_IMAGE_TYPE_DEPTH, NUI_IMAGE_RESOLUTION_640x480, 0, 2, depth_event, &depth_handle);

if (FAILED(result)) {

cout << "Error : Depth Stream Open" << endl;

return;

}

// Size

unsigned long refWidth = 0;

unsigned long refHeight = 0;

NuiImageResolutionToSize(NUI_IMAGE_RESOLUTION_640x480, refWidth, refHeight);

this->width = static_cast<int>(refWidth);

this->height = static_cast<int>(refHeight);

// Mapp

this->cordinate_mapper = nullptr;

result = sensor->NuiGetCoordinateMapper(&this->cordinate_mapper);

if (FAILED(result)) {

cout << "Error : Cordinate Mapper " << endl;

return;

}

// OpenCV

this->frame_img.allocate(this->width, this->height, OF_IMAGE_COLOR);

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

this->depth = cv::Mat(height, width, CV_16UC1);

this->events[0] = this->color_event;

this->events[1] = this->depth_event;

// Box2d

this->box2d.init();

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

this->box2d.createBounds();

this->box2d.setFPS(30);

this->box2d.enableGrabbing();

}

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

void ofApp::update(){

HRESULT result = S_OK;

// Color Table

cv::Vec3b color[7];

color[0] = cv::Vec3b(0, 0, 0);

color[1] = cv::Vec3b(255, 0, 0);

color[2] = cv::Vec3b(0, 255, 0);

color[3] = cv::Vec3b(0, 0, 255);

color[4] = cv::Vec3b(255, 255, 0);

color[5] = cv::Vec3b(255, 0, 255);

color[6] = cv::Vec3b(0, 255, 255);

std::vector<NUI_COLOR_IMAGE_POINT> color_point(width * height);

// Wait frame update.

ResetEvent(this->color_event);

ResetEvent(this->depth_event);

WaitForMultipleObjects(ARRAYSIZE(this->events), this->events, true, INFINITE);

// Get frame from color camera.

NUI_IMAGE_FRAME colorImageFrame = { 0 };

result = sensor->NuiImageStreamGetNextFrame(this->color_handle, 0, &colorImageFrame);

if (FAILED(result)) {

std::cerr << "Error : NuiImageStreamGetNextFrame( COLOR )" << std::endl;

return;

}

// Get image data.

INuiFrameTexture* pColorFrameTexture = colorImageFrame.pFrameTexture;

NUI_LOCKED_RECT colorLockedRect;

pColorFrameTexture->LockRect(0, &colorLockedRect, nullptr, 0);

//// Get frame from depth camera.

NUI_IMAGE_FRAME depthImageFrame = { 0 };

result = this->sensor->NuiImageStreamGetNextFrame(this->depth_handle, 0, &depthImageFrame);

if (FAILED(result)) {

std::cerr << "Error : NuiImageStreamGetNextFrame( DEPTH )" << std::endl;

return ;

}

// Get depth data.

BOOL nearMode = false;

INuiFrameTexture* pDepthFrameTexture = nullptr;

this->sensor->NuiImageFrameGetDepthImagePixelFrameTexture(this->depth_handle, &depthImageFrame, &nearMode, &pDepthFrameTexture);

NUI_LOCKED_RECT depthLockedRect;

pDepthFrameTexture->LockRect(0, &depthLockedRect, nullptr, 0);

// OpenCV(image)

cv::Mat src = cv::Mat(this->height, this->width, CV_8UC4, reinterpret_cast<unsigned char*>(colorLockedRect.pBits));

cv::cvtColor(src, this->frame, CV_BGRA2RGB);

// OpenCV(depth)

cv::Mat bufferMat = cv::Mat::zeros(height, width, CV_16UC1);

NUI_DEPTH_IMAGE_PIXEL* depth_pixel = reinterpret_cast<NUI_DEPTH_IMAGE_PIXEL*>(depthLockedRect.pBits);

this->cordinate_mapper->MapDepthFrameToColorFrame(NUI_IMAGE_RESOLUTION_640x480, width * height, depth_pixel, NUI_IMAGE_TYPE_COLOR, NUI_IMAGE_RESOLUTION_640x480, width * height, &color_point[0]);

for (int y = 0; y < height; y++) {

for (int x = 0; x < width; x++) {

unsigned int index = y * width + x;

bufferMat.at<unsigned short>(color_point[index].y, color_point[index].x) = depth_pixel[index].depth;

}

bufferMat.copyTo(this->depth);

//cv::imshow("depth", this->depth);

// Release

pColorFrameTexture->UnlockRect(0);

pDepthFrameTexture->UnlockRect(0);

this->sensor->NuiImageStreamReleaseFrame(this->color_handle, &colorImageFrame);

this->sensor->NuiImageStreamReleaseFrame(this->depth_handle, &depthImageFrame);

for (int i = this->rects.size() - 1; i > -1; i--) {

this->rects_life[i] -= 2;

if (this->rects_life[i] <= 0) {

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

this->rects.erase(this->rects.begin() + i);

this->rects_color.erase(this->rects_color.begin() + i);

this->rects_life.erase(this->rects_life.begin() + i);

}

this->box2d.update();

}

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

void ofApp::draw(){

this->locations.clear();

this->colors.clear();

for (int y = 0; y < this->depth.rows; y += 1) {

for (int x = 0; x < this->depth.cols; x += 1) {

int z = depth.at<unsigned short>(y, x);

if (z != 0 && z < 1024) {

if (y % 15 == 0 && x % 15 == 0) {

if (z < 550) {

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

this->rects.back().get()->setPhysics(3.0, 0.6, 0.1);

this->rects.back().get()->setup(this->box2d.world, x, y, 15, 15);

this->rects_color.push_back(ofColor(this->frame.at<cv::Vec3b>(y, x)[0], this->frame.at<cv::Vec3b>(y, x)[1], this->frame.at<cv::Vec3b>(y, x)[2]));

this->rects_life.push_back(255);

}

if (z > 550) {

ofSetColor(ofColor(this->frame.at<cv::Vec3b>(y, x)[0], this->frame.at<cv::Vec3b>(y, x)[1], this->frame.at<cv::Vec3b>(y, x)[2]));

ofDrawRectangle(x, y, 1, 1);

}

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

ofSetColor(this->rects_color[i], this->rects_life[i]);

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

}

this->box2d.drawGround();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20171020

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2017年10月20日2017年12月5日

Insta20171019

[ Video ]

[ About ]
Box2DのオブジェクトをMouse操作で遊んでいます。
マウスの左ボタンでオブジェクトを掴んでいます。
マウスの中ボタンでRectを生成
マウスの右ボタンでCircleを生成

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

class ofApp : public ofBaseApp{
	public:
		void setup();
		void update();
		void draw();
		void mousePressed(int x, int y, int button);
		void mouseReleased(int x, int y, int button);

		void keyPressed(int key) {}
		void keyReleased(int key) {}
		void mouseMoved(int x, int y) {}
		void mouseDragged(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) {}
		
		ofVec2f press_position;

		ofxBox2d box2d;

		vector<shared_ptr<ofxBox2dCircle>> circles;
		vector<ofColor> circles_color;

		vector<shared_ptr<ofxBox2dRect>> rects;
		vector<ofColor> rects_color;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

class ofApp : public ofBaseApp{

public:

void setup();

void update();

void draw();

void mousePressed(int x, int y, int button);

void mouseReleased(int x, int y, int button);

void keyPressed(int key) {}

void keyReleased(int key) {}

void mouseMoved(int x, int y) {}

void mouseDragged(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) {}

ofVec2f press_position;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circles;

vector<ofColor> circles_color;

vector<shared_ptr<ofxBox2dRect>> rects;

vector<ofColor> rects_color;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup(){
	ofSetFrameRate(60);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofSetCircleResolution(60);
	ofSetLineWidth(1.5);

	this->box2d.init();
	this->box2d.setGravity(0, 10);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();
}

//--------------------------------------------------------------
void ofApp::update(){
	this->box2d.update();
}

//--------------------------------------------------------------
void ofApp::draw(){
	
	if (this->press_position != ofVec2f(0, 0)){
		// Center button
		if (ofGetMousePressed(1)) {
			ofVec2f mouse_position = ofVec2f(ofGetMouseX(), ofGetMouseY());
			ofVec2f difference = mouse_position - this->press_position;

			ofColor line_color;
			line_color.setHsb(ofGetFrameNum() % 255, 255, 255);
			ofSetColor(line_color);

			ofFill();
			ofDrawRectangle(this->press_position, difference.x, difference.y);
		}

		// Right button
		if (ofGetMousePressed(2)) {
			ofVec2f mouse_position = ofVec2f(ofGetMouseX(), ofGetMouseY());
			float r = mouse_position.distance(this->press_position);

			ofColor line_color;
			line_color.setHsb(ofGetFrameNum() % 255, 255, 255);
			ofSetColor(line_color);

			ofNoFill();
			ofDrawEllipse(this->press_position, r * 2, r * 2);
		}
	}

	ofNoFill();

	for (int i = 0; i < this->circles.size(); i++) {
		ofSetColor(this->circles_color[i]);
		this->circles[i].get()->draw();
	}
	for (int i = 0; i < this->rects.size(); i++) {
		ofSetColor(this->rects_color[i]);
		this->rects[i].get()->draw();
	}

	this->box2d.drawGround();
}

//--------------------------------------------------------------
void ofApp::mousePressed(int x, int y, int button) {
	// Center or Right button
	if (button == 1 || button == 2) {
		this->press_position = ofVec2f(x, y);
	}
}


//--------------------------------------------------------------
void ofApp::mouseReleased(int x, int y, int button) {

	// Center button
	if (button == 1) {
		ofVec2f mouse_position = ofVec2f(x, y);
		ofVec2f difference = mouse_position - this->press_position;

		this->rects.push_back(shared_ptr<ofxBox2dRect>(new ofxBox2dRect));
		this->rects.back().get()->setPhysics(3.0, 0.53, 0.1);
		this->rects.back().get()->setup(this->box2d.world, this->press_position.x + difference.x / 2, this->press_position.y + difference.y / 2, difference.x, difference.y);

		ofColor rect_color;
		rect_color.setHsb(ofGetFrameNum() % 255, 255, 255);
		this->rects_color.push_back(rect_color);

		this->press_position = ofVec2f(0, 0);
	}

	// Right button
	if (button == 2) {
		ofVec2f mouse_position = ofVec2f(x, y);
		float r = mouse_position.distance(this->press_position);

		this->circles.push_back(shared_ptr<ofxBox2dCircle>(new ofxBox2dCircle));
		this->circles.back().get()->setPhysics(3.0, 0.53, 0.1);
		this->circles.back().get()->setup(this->box2d.getWorld(), this->press_position.x, this->press_position.y, r);

		ofColor circle_color;
		circle_color.setHsb(ofGetFrameNum() % 255, 255, 255);
		this->circles_color.push_back(circle_color);

		this->press_position = ofVec2f(0, 0);
	}
}

//========================================================================
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup(){

ofSetFrameRate(60);

ofBackground(0);

ofSetWindowTitle("Insta");

ofSetCircleResolution(60);

ofSetLineWidth(1.5);

this->box2d.init();

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

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

}

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

void ofApp::update(){

this->box2d.update();

}

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

void ofApp::draw(){

if (this->press_position != ofVec2f(0, 0)){

// Center button

if (ofGetMousePressed(1)) {

ofVec2f mouse_position = ofVec2f(ofGetMouseX(), ofGetMouseY());

ofVec2f difference = mouse_position - this->press_position;

ofColor line_color;

line_color.setHsb(ofGetFrameNum() % 255, 255, 255);

ofSetColor(line_color);

ofFill();

ofDrawRectangle(this->press_position, difference.x, difference.y);

}

// Right button

if (ofGetMousePressed(2)) {

ofVec2f mouse_position = ofVec2f(ofGetMouseX(), ofGetMouseY());

float r = mouse_position.distance(this->press_position);

ofColor line_color;

line_color.setHsb(ofGetFrameNum() % 255, 255, 255);

ofSetColor(line_color);

ofNoFill();

ofDrawEllipse(this->press_position, r * 2, r * 2);

}

ofNoFill();

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

ofSetColor(this->circles_color[i]);

this->circles[i].get()->draw();

}

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

ofSetColor(this->rects_color[i]);

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

}

this->box2d.drawGround();

}

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

void ofApp::mousePressed(int x, int y, int button) {

// Center or Right button

if (button == 1 || button == 2) {

this->press_position = ofVec2f(x, y);

}

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

void ofApp::mouseReleased(int x, int y, int button) {

// Center button

if (button == 1) {

ofVec2f mouse_position = ofVec2f(x, y);

ofVec2f difference = mouse_position - this->press_position;

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

this->rects.back().get()->setPhysics(3.0, 0.53, 0.1);

this->rects.back().get()->setup(this->box2d.world, this->press_position.x + difference.x / 2, this->press_position.y + difference.y / 2, difference.x, difference.y);

ofColor rect_color;

rect_color.setHsb(ofGetFrameNum() % 255, 255, 255);

this->rects_color.push_back(rect_color);

this->press_position = ofVec2f(0, 0);

}

// Right button

if (button == 2) {

ofVec2f mouse_position = ofVec2f(x, y);

float r = mouse_position.distance(this->press_position);

this->circles.push_back(shared_ptr<ofxBox2dCircle>(new ofxBox2dCircle));

this->circles.back().get()->setPhysics(3.0, 0.53, 0.1);

this->circles.back().get()->setup(this->box2d.getWorld(), this->press_position.x, this->press_position.y, r);

ofColor circle_color;

circle_color.setHsb(ofGetFrameNum() % 255, 255, 255);

this->circles_color.push_back(circle_color);

this->press_position = ofVec2f(0, 0);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20171019

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2017年10月19日2017年10月19日

ofxBox2dをWindows環境で使う

Box2dxという物理エンジンがあるのですが、openFrmaeworksのaddonが用意されているようです。

Processingの時にお世話になった楽しいライブラリなので、openFrameworksでも試してみました。

[ 環境 ]
・Windows 10
・Visual Studio 2015
・openFramewoks 0.9.8

Box2D
https://ja.wikipedia.org/wiki/Box2D

とりあえず、通常のaddonと同じようにGitHubからデータを引っ張ってきます。
openFrameworksのバージョン0.9.8はstableを使うように書いてあるのでそちらのブランチから持ってきましょう。

ofxBox2d
https://github.com/vanderlin/ofxBox2d

そのままでは使えなかったのですが、2点程対応して使えるようにしました。

OSX/linuxユーザが多いためか、Windows環境だと手を加える必要があったり、色々なソフトを導入しないと使えないaddonとか良くあります。

C++なのでプログラミングできれば、SDKを直接呼んだ方が早い場合もありますね。OpenCVやKinectはそうしています。

1.追加のインクルードディレクトリに「[openFrameworks_dir]\addons\ofxBox2d\libs」を追記

openframerowks/addonsフォルダに配置して、プロジェクトを新規作成、使用するを選択する画面でofxBox2があることを確認して、チェック。そのままビルドするとエラーが数件発生しました。

headerファイルがないといわれますがフォルダを覗くと実体は存在しているようだったので、Pathが通じるようにしてあげましょう。

32bit,64bitのそれぞれあるので、注意しましょう

2.「ofxBox2dPolygonUtils.h」の「simplifyContour」関数を一部修正する

「式には定数値が必要です」というエラーが出ます。私もC#からC++に移行した身なので、始めの頃はやろうとしてエラーにしてましたね。

//-------------------------------------------------------------------
// needs simplifyDP which is above
static vector <ofVec2f> simplifyContour(vector <ofVec2f> &V, float tol) {

	int n = V.size();
	vector <ofVec2f> sV;
	if(n <= 2)
	{
	  return sV;
	}
	sV.assign(n, ofVec2f());

    int    i, k, m, pv;            // misc counters
    float  tol2 = tol * tol;       // tolerance squared
    
    vector<ofVec2f> vt(n);
	int mk[n];
	
	memset(mk, 0, sizeof(mk));
	
    // STAGE 1.  Vertex Reduction within tolerance of prior vertex cluster
    vt[0] = V[0];              // start at the beginning
    for (i=k=1, pv=0; i<n; i++) {
        if (V[i].squareDistance( V[pv] ) < tol2) continue;
        vt[k++] = V[i];
        pv = i;
    }
    if (pv < n-1) vt[k++] = V[n-1];      // finish at the end

    // STAGE 2.  Douglas-Peucker polyline simplification
    mk[0] = mk[k-1] = 1;       // mark the first and last vertices
    
    simplifyDP( tol, &vt[0], 0, k-1, mk );
	
    // copy marked vertices to the output simplified polyline
    for (i=m=0; i<k; i++) {
        if (mk[i]) sV[m++] = vt[i];
    }

	//get rid of the unused points
	if( m < (int)sV.size() ) sV.erase( sV.begin()+m, sV.end() );
    
	return sV;
}

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

// needs simplifyDP which is above

static vector <ofVec2f> simplifyContour(vector <ofVec2f> &V, float tol) {

int n = V.size();

vector <ofVec2f> sV;

if(n <= 2)

{

return sV;

}

sV.assign(n, ofVec2f());

int i, k, m, pv; // misc counters

float tol2 = tol * tol; // tolerance squared

vector<ofVec2f> vt(n);

int mk[n];

memset(mk, 0, sizeof(mk));

// STAGE 1. Vertex Reduction within tolerance of prior vertex cluster

vt[0] = V[0]; // start at the beginning

for (i=k=1, pv=0; i<n; i++) {

if (V[i].squareDistance( V[pv] ) < tol2) continue;

vt[k++] = V[i];

pv = i;

}

if (pv < n-1) vt[k++] = V[n-1]; // finish at the end

// STAGE 2. Douglas-Peucker polyline simplification

mk[0] = mk[k-1] = 1; // mark the first and last vertices

simplifyDP( tol, &vt[0], 0, k-1, mk );

// copy marked vertices to the output simplified polyline

for (i=m=0; i<k; i++) {

if (mk[i]) sV[m++] = vt[i];

}

//get rid of the unused points

if( m < (int)sV.size() ) sV.erase( sV.begin()+m, sV.end() );

return sV;

}

変数の値で配列を作ろうとしているので、怒られます。
ネットで調べながら下記のように修正しました。

//-------------------------------------------------------------------
// needs simplifyDP which is above
static vector <ofVec2f> simplifyContour(vector <ofVec2f> &V, float tol) {

	int n = V.size();
	vector <ofVec2f> sV;
	if(n <= 2)
	{
	  return sV;
	}
	sV.assign(n, ofVec2f());

    int    i, k, m, pv;            // misc counters
    float  tol2 = tol * tol;       // tolerance squared
    
    vector<ofVec2f> vt(n);
	
	int* mk = (int*)malloc(sizeof(int) * n);
	memset(mk, 0, sizeof(int) * n);
	
    // STAGE 1.  Vertex Reduction within tolerance of prior vertex cluster
    vt[0] = V[0];              // start at the beginning
    for (i=k=1, pv=0; i<n; i++) {
        if (V[i].squareDistance( V[pv] ) < tol2) continue;
        vt[k++] = V[i];
        pv = i;
    }
    if (pv < n-1) vt[k++] = V[n-1];      // finish at the end

    // STAGE 2.  Douglas-Peucker polyline simplification
    mk[0] = mk[k-1] = 1;       // mark the first and last vertices
    
    simplifyDP( tol, &vt[0], 0, k-1, mk );
	
    // copy marked vertices to the output simplified polyline
    for (i=m=0; i<k; i++) {
        if (mk[i]) sV[m++] = vt[i];
    }

	//get rid of the unused points
	if( m < (int)sV.size() ) sV.erase( sV.begin()+m, sV.end() );
    
	free(mk);

	return sV;
}

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

// needs simplifyDP which is above

static vector <ofVec2f> simplifyContour(vector <ofVec2f> &V, float tol) {

int n = V.size();

vector <ofVec2f> sV;

if(n <= 2)

{

return sV;

}

sV.assign(n, ofVec2f());

int i, k, m, pv; // misc counters

float tol2 = tol * tol; // tolerance squared

vector<ofVec2f> vt(n);

int* mk = (int*)malloc(sizeof(int) * n);

memset(mk, 0, sizeof(int) * n);

// STAGE 1. Vertex Reduction within tolerance of prior vertex cluster

vt[0] = V[0]; // start at the beginning

for (i=k=1, pv=0; i<n; i++) {

if (V[i].squareDistance( V[pv] ) < tol2) continue;

vt[k++] = V[i];

pv = i;

}

if (pv < n-1) vt[k++] = V[n-1]; // finish at the end

// STAGE 2. Douglas-Peucker polyline simplification

mk[0] = mk[k-1] = 1; // mark the first and last vertices

simplifyDP( tol, &vt[0], 0, k-1, mk );

// copy marked vertices to the output simplified polyline

for (i=m=0; i<k; i++) {

if (mk[i]) sV[m++] = vt[i];

}

//get rid of the unused points

if( m < (int)sV.size() ) sV.erase( sV.begin()+m, sV.end() );

free(mk);

return sV;

}

普段だと動的な配列はvectorとかのコンテナを使ってしまうので、こういうC言語由来の書き方は苦手ですね。自信は無いですが、大丈夫のはず…(危険なコードだったら誰か教えて)

とゆーか、stableにこのコードがあるってことは、コンパイラによってはOKのものもあるのかな。C/C++は奥が深すぎて毎日勉強ですね。

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