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#include "testApp.h"
//--------------------------------------------------------------
void testApp::setup(){
#ifdef _USE_LIVE_VIDEO
vidGrabber.setVerbose(true);
vidGrabber.initGrabber(320,240);
#else
vidPlayer.loadMovie("camoutput.mov");
vidPlayer.play();
#endif
colorImg.allocate(320,240);
grayImage.allocate(320,240);
grayBg.allocate(320,240);
grayDiff.allocate(320,240);
bLearnBakground = true;
threshold = 80;
ofVec3f centre=ofVec3f(ofGetWidth()/2,0,0);
ofVec3f normal=ofVec3f(0,0,-1);
ray=ofRay();
plane=ofPlane(centre,normal);
plane.color=ofColor(255,255,255);
projector=ofProjector(1.535f, ofVec2f(0.0f, 0.5f),ofGetWidth(),ofGetHeight());
projector.setPosition(ofGetWidth()/2,ofGetHeight()/2,ofGetHeight());
cam=ofCamera();
cam.setPosition(ofGetWidth()/2,ofGetHeight()/2,ofGetHeight());
cam.lookAt(ofVec3f(ofGetWidth()/2,ofGetHeight()/2,0));
cam.setFov(54.13);
cam_angle=0;
}
//--------------------------------------------------------------
void testApp::update(){
ofBackground(100,100,100);
bool bNewFrame = false;
#ifdef _USE_LIVE_VIDEO
vidGrabber.grabFrame();
bNewFrame = vidGrabber.isFrameNew();
#else
vidPlayer.idleMovie();
bNewFrame = vidPlayer.isFrameNew();
#endif
if (bNewFrame){
#ifdef _USE_LIVE_VIDEO
colorImg.setFromPixels(vidGrabber.getPixels(), 320,240);
#else
colorImg.setFromPixels(vidPlayer.getPixels(), 320,240);
#endif
grayImage = colorImg;
if (bLearnBakground == true){
grayBg = grayImage; // the = sign copys the pixels from grayImage into grayBg (operator overloading)
bLearnBakground = false;
}
// take the abs value of the difference between background and incoming and then threshold:
grayDiff.absDiff(grayBg, grayImage);
grayDiff.threshold(threshold);
// find contours which are between the size of 20 pixels and 1/3 the w*h pixels.
// also, find holes is set to true so we will get interior contours as well....
contourFinder.findContours(grayDiff, 20, (340*240)/3, 10, false); // don't find holes
}
}
//--------------------------------------------------------------
void testApp::draw(){
/*
// draw the incoming, the grayscale, the bg and the thresholded difference
ofSetHexColor(0xffffff);
colorImg.draw(20,20);
grayImage.draw(360,20);
grayBg.draw(20,280);
grayDiff.draw(360,280);
// then draw the contours:
*/
ofFill();
ofSetHexColor(0x333333);
//ofRect(360,540,320,240);
ofSetHexColor(0xa0a0a0);
// we could draw the whole contour finder
//contourFinder.draw(360,540);
colorImg.draw(0,0,ofGetWidth(),ofGetHeight());
cam.begin();
ofPushMatrix();
ofRotate(cam_angle,1,0,0);
for (float i=0;i<=ofGetWidth();i+=ofGetWidth()/10) {
glBegin(GL_LINES);
glVertex3f(i,0,0);
glVertex3f(i,ofGetWidth(),0);
glEnd();
glBegin(GL_LINES);
glVertex3f(0,i,0);
glVertex3f(ofGetWidth(),i,0);
glEnd();
}
ofPopMatrix();
cam.end();
ofSphere(pos.x,pos.y,pos.z,5);
for (int i = 0; i < contourFinder.nBlobs; i++){
contourFinder.blobs[i].draw(0,0);
ofPoint p=contourFinder.blobs[i].centroid;
ofVec3f pp;
cam.begin();
ofPushMatrix();
ofRotate(cam_angle,1,0,0);
ray=projector.castPixel(p.x,(ofGetHeight()/2)-p.y); //(ofGetHeight()-y));
bool hit = plane.intersect(ray,pp);
ofBox(pp,50);
ofPopMatrix();
cam.end();
}
// finally, a report:
ofSetHexColor(0xffffff);
char reportStr[1024];
sprintf(reportStr, "threshold %i\nnum blobs found %i, fps: %f", threshold, contourFinder.nBlobs, ofGetFrameRate());
ofDrawBitmapString(reportStr, 10, 215);
}
//--------------------------------------------------------------
void testApp::keyPressed(int key){
switch (key){
case ' ':
bLearnBakground = true;
break;
case '+':
threshold ++;
if (threshold > 255) threshold = 255;
break;
case '-':
threshold --;
if (threshold < 0) threshold = 0;
break;
case 'a':
cam_angle+=1;
break;
case 'z':
cam_angle-=1;
break;
}
plane.setNormal(ofVec3f(0,sin(cam_angle*0.01745329),-cos(cam_angle*0.01745329)));
}
//--------------------------------------------------------------
void testApp::keyReleased(int key){
}
//--------------------------------------------------------------
void testApp::mouseMoved(int x, int y ){
}
//--------------------------------------------------------------
void testApp::mouseDragged(int x, int y, int button){
}
//--------------------------------------------------------------
void testApp::mousePressed(int x, int y, int button){
}
//--------------------------------------------------------------
void testApp::mouseReleased(int x, int y, int button){
ray=projector.castPixel(x,((3*(ofGetHeight()/2))-y)); //(ofGetHeight()-y));
bool hit = plane.intersect(ray,pos);
//pos=ofVec3f(pos.x*2,pos.y*2,pos.z*2);
if (hit) printf("ray:%i,%i hit plane:%f,%f,%f\n",x,y,pos.x,pos.y,pos.z);
else printf("ray:%i,%i missed plane\n",x,y);
}
//--------------------------------------------------------------
void testApp::windowResized(int w, int h){
}
//--------------------------------------------------------------
void testApp::gotMessage(ofMessage msg){
}
//--------------------------------------------------------------
void testApp::dragEvent(ofDragInfo dragInfo){
}
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