Man page 3 : XIntersectRegion

XIntersectRegion, XUnionRegion, XUnionRectWithRegion, XSubtractRegion, XXorRegion, XOffsetRegion, XShrinkRegion - region arithmetic

int XIntersectRegion(Region sra, Region srb, Region dr_return); int XUnionRegion(Region sra, Region srb, Region dr_return); int XUnionRectWithRegion(XRectangle *rectangle, Region src_region, Region dest_region_return); int XSubtractRegion(Region sra, Region srb, Region dr_return); int XXorRegion(Region sra, Region srb, Region dr_return); int XOffsetRegion(Region r, int dx, int dy); int XShrinkRegion(Region r, int dx, int dy);

dest_region_return 1i Returns the destination region.

dr_return 1i Returns the result of the computation. ds Dy move or shrink

dx 1i

dy 1i Specify the x and y coordinates, which define the amount you want to \*(Dy the specified region.

r 1i Specifies the region.

rectangle 1i Specifies the rectangle.

sra 1i

srb 1i Specify the two regions with which you want to perform the computation.

src_region 1i Specifies the source region to be used.

The .ZN XIntersectRegion function computes the intersection of two regions.

The .ZN XUnionRegion function computes the union of two regions.

The .ZN XUnionRectWithRegion function updates the destination region from a union of the specified rectangle and the specified source region.

The .ZN XSubtractRegion function subtracts srb from sra and stores the results in dr_return.

The .ZN XXorRegion function calculates the difference between the union and intersection of two regions.

The .ZN XOffsetRegion function moves the specified region by a specified amount.

The .ZN XShrinkRegion function reduces the specified region by a specified amount. Positive values shrink the size of the region, and negative values expand the region.

XCreateRegion(3), XDrawRectangle(3), XEmptyRegion(3)
\*(xL