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void
Graphic function

slWindow

Window settings

Format

void slWindow(left , top , right , bottom , Zlimit , centx , centy)
Sint16 left ;
Sint16 top ;
Sint16 right ;
Sint16 bottom ;
Sint16 Zlimit ;
Sint16 centx ;
Sint16 centy ;

Parameter

left X coordinate at upper left of window (screen coordinate system)
top Y coordinate at the top left of the window (screen coordinate system)
right X coordinate at bottom right of window (screen coordinate system)
bottom Y coordinate at bottom right of window (screen coordinate system)
Zlimit Window rear limit surface distance specification
centx vanishing point X coordinate
centy vanishing point Y coordinate

Function

Set the window to limit the display of sprites and polygons.
A window is the name of a rectangular area set on the screen. Up to two windows can be set on one screen.
Polygons and sprites can be displayed or hidden inside and outside the window area.
As parameters, substitute the XY screen coordinate value that represents the window range, the Z coordinate value that represents the display rear limit, and the XY screen coordinate value that sets the vanishing point.

Return value

None

Remarks

Polygons and sprites are affected by the windows set before drawing.
In SGL, the default window is set to the same size as the screen size, and the drawing of polygons and sprites when the function “slWindow” is never executed is affected by this default window.

Note) Left, top, right, bottom, CENTER_X, CENTER_Y indicate XY coordinate values ​​for the monitor.

Reference: Chapter 4 Coordinate transformation

slWindow

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