void RenderVideoFrame::setState(int v) {
if (v != state && -2 <= v && v <= 3) {
state = v;
switch (state) {
case -2:
// uninitialized
point_x = point_y = -1;
value = 0;
capturing = false;
update();
break;
case -1:
// initialized
point_x = point_y = -1; // do it again in case of restarting
value = 0;
startCapturing(0);
setState(0);
break;
case 0:
// waiting for user to select the object to track
break;
case 1:
// tracking object and selecting circles
break;
case 2:
// finished everything :)
stopCapturing();
countValue();
initCircles();
update();
break;
case 3:
// interrupted :(
stopCapturing();
initCircles();
update();
break;
}
emit stateChanged(v);
}
}
int main(int argc, char **argv) {
initCircles(); //initialize circle values
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DEPTH | GLUT_SINGLE | GLUT_RGBA | GLUT_ALPHA);
glutInitWindowPosition(0,0); //window position
glutInitWindowSize(WINDOW_SIZE, WINDOW_SIZE); //window size
glutCreateWindow ("circles!!!"); //window name
glClearColor(0.0, 0.0, 0.0, 0.0); //background color
glClear(GL_COLOR_BUFFER_BIT);
//The four following statements set up the viewing rectangle
glMatrixMode(GL_PROJECTION); // use proj. matrix
glLoadIdentity(); // load identity matrix
gluOrtho2D(-1.0, 1.0, -1.0, 1.0); // set orthogr. proj.
glMatrixMode(GL_MODELVIEW); // back to modelview m.
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glutDisplayFunc(display);
glutTimerFunc(waitTime, timer, 1);
glutMouseFunc(mouse);
glutKeyboardFunc(keyboard);
glutReshapeFunc(reshape);
glutMainLoop();
return 0;
}
void ScanLineHelper::init( ){
short ax = 0;
short ay = 0;
short ex = 0;
short ey = 0;
numberOfCircles = 16;
innerLines = (short *) malloc(nLines/2 * maxPoints * 2 * sizeof(short));
innerLinesN = (short *) malloc(nLines/2 * sizeof(short));
outerLines = (short *) malloc(nLines/2 * maxPoints/2 * 2 * sizeof(short));
outerLinesN = (short *) malloc(nLines/2 * sizeof(short));
circles = (short *) malloc(1500*numberOfCircles*2*sizeof(short));
circleOffsets = (short *) malloc((numberOfCircles + 1)*sizeof(short));
printf("Sizeof short: %d\n", (int)sizeof(short));
for(int i = 0; i < nLines; i++){
double angle = i*1.0/nLines *2*M_PI;
if(i % 2 == 0){
if(fabs(angle) < 4*M_PI/5 || fabs(angle) > 6*M_PI/5) {
ax = (short) (cos(angle)*iRadius + mx);
ay = (short) (sin(angle)*iRadius + my);
} else {
double helpRadius = -frontScanlineDistance / cos(angle);
ax = (short) (cos(angle)*helpRadius + mx);
ay = (short) (sin(angle)*helpRadius + my);
}
ex = (short) (cos(angle)*(double) oRadius + (double) mx);
ey = (short) (sin(angle)*(double) oRadius + (double) my);
int offset = (i/2)*maxPoints*2;
DrawLine(innerLines + offset, innerLinesN + (i/2), ax, ay, ex, ey);
}
else{
ax = (short) (cos(angle)*(iRadius + (oRadius - iRadius)/4) + mx);
ay = (short) (sin(angle)*(iRadius + (oRadius - iRadius)/4) + my);
ex = (short) (cos(angle)*oRadius + mx);
ey = (short) (sin(angle)*oRadius + my);
int offset = (i/2)*maxPoints;
DrawLine(outerLines + offset, outerLinesN + (i/2), ax, ay, ex, ey);
}
}
initCircles();
}
void initialise() {
PI = Pi();
frameCap = 60;
inputCap = 60;
updateCap = 240;
play = false;
drawing = false;
verts = 50;
speed = 4;
circleColour = vec4(0.4, 0.3, 0.8, 1);
mark = Marker(vec4(0.0, 0.6, 0.8, 1));
glPointSize(10.0f);
float theta[NUMBER] = {1,2,3,4,0,0};
float radii[NUMBER] = {300,150,100,50,20,10};
float rates[NUMBER] = {1,2,3,4*PI,5,6};
initCircles(vec2(500,500),radii, rates, theta);
}
RenderVideoFrame::RenderVideoFrame(QWidget *parent) :
QWidget(parent)
{
// circles settings
//computed for 6x5 circles on 640x480 surface
// 640 = 6*d + 5*s1
// 480 = 5*d + 4*s2
//there cannot be more circles, unless one wants to use huge integers
//(more than 2^64)
d = 80-1; //circle diameter; '-1' is for the width of the circle
s1 = 32; //space between circles on X-axis
s2 = 20; //space between circles on Y-axis
c_x = 6;
c_y = 5;
initCircles();
//selected point
point_diameter = 16;
timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(queryFrame()) );
setState(-2);
}