BoundingRect Height

Technical C/C++
1

Hello, does anyone know how to get the BoundingRect Height data for a particle in the vision analysis. My team used a vector<particleanalysisreport> but all we could find was boundingRect which did not tell us anything.

2

Sure thing. When you get the vector back, I’ll assume (for the moment) that you can iterate through the vector and get the ParticleAnalysisReport objects back…


ParticleAnalysisReport& par = (*vPAR)*;

int h = par.boundingRect.Height;

I am doing this a bit from memory earlier today - but basically there is a “Rect” structure which is what boundingRect is within the Report class. It has Top/Left/Width/Height.

That’s the ticket.

bob*

3

The definition of Rect is in WPILib
ivision.h


typedef struct Rect_struct {
    int top;    //Location of the top edge of the rectangle.
    int left;   //Location of the left edge of the rectangle.
    int height; //Height of the rectangle.
    int width;  //Width of the rectangle.
} Rect;
4

Thanks Mike for the official word. :slight_smile:

bob

5

Thanks for the help. If I know a particle location in the vector like
int particle
vector->at(particle); //particle is the particle number i want
is the correct sysntax to get the boundingrect height

ParticleAnalysisReport& par = (*vector)[particle];
int h= par.boundingRect.height;

6 

ParticleAnalysisReport *p;
int rectWidth;
int rectHeight;
for (unsigned i = 0; i < particles->size(); i++)
{
    p = &(particles->at(i));
    rectWidth = p->boundingRect.width;
    rectHeight = p->boundingRect.height;
}
7