what's wrong with this code

[asda333]

Hey

Below is a code, which sometimes randomly says error, unhandled exception error something to do with access mask out of bond which is ridiculous and sometimes it works, i don't know why

for(int index=0;index<projectedpoints.size();index++)
{
    int dx = threedpoint[index].x, dy=threedpoint[index].y,dz=threedpoint[index].z;
    double check = threedimension[dx][dy][dz];
    if(check==1)
    {
        vertexpoints[index] = Point3f(dx,dy,dz);
	if(float(mask.at<uchar>(projectedpoints[index]))==255.0)
	{
	    threedimension[dx][dy][dz]=0.0;
	}							
    }
}

projected points is between between 0 and 480 for x and 0 and 640 for y and mask size is 480x640.
threedimension is a 3D array size 30x30x30, which the value of each location is either a 1 or a 0 and threedpoint contain the 3d coordinates, which is used as a lookup to threedimension array

vertex points contains 3D coordinates.

Thanks

[vlad from moscow]

Nobody can answer because nobody knows how many elements in container threedpoint or in threedimension or in vertexpoints.

[asda333]

i thought i mentioned it, ok never mind, here it is.

threedpoint contains 60x60x60 elements 216000 i think
threedimension is a 3D array containing 1s in all elements.

vertexpoints elements varies, as it depends on wether the 3d location at threedimension contains a value 1 if not it is not added to vertex points.
else it is.

it is cleared everytime to add new values which do contains ones in the 3d array threedimension.

[ne555]

$ g++ -ggdb foo.cpp
$ gdb a.out
> run
crash (unhandled exception)
> print index
> print projectedpoints[index]

[asda333]

i don't understand by what you wrote.

[abhishekm71]

>i don't understand by what you wrote.

Use a debugger to trace the problem.