The Point Structure (IM: XG)

Inside Macintosh: QuickDraw GX Graphics /

Chapter 2 - Geometric Shapes / Geometric Shapes Reference

The Point Structure
You use the gxPoint structure in a number of situations; for example, to specify the geometry of a point shape, to specify the position of geometric points in the geometries of other geometric shape types, to specify a location to hit-test, to specify the position of a bitmap, and so on.
The gxPoint structure is defined as follows:
struct gxPoint {
   Fixed    x;
   Fixed    y;
};
Field Description

x
A horizontal distance. Greater values of the x field indicate distances further to the right.
y
A vertical distance. Greater values of the y field indicate distances further down.
The location of the origin depends on the context where you use the point; for example, it might be the upper-left corner of a view port.
Notice that the x and y fields are of type Fixed. QuickDraw GX allows you to specify fractional coordinate positions.
For more information about coordinates and coordinate spaces, see Inside Macintosh: QuickDraw GX Objects.
For more information about points and point shapes, see "Point Shapes" on page 2-16.