Bridgetek FT801 - Scissor_Size

FT800 Series Programmer Guide
Version 2.1
Document Reference No.: BRT_000030 Clearance No.: BRT#037
132
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4.36 SCISSOR_SIZE
Specify the size of the scissor clip rectangle
Encoding
31 24
23 20
19 10
9 0
0x1C
Reserved
Width
Height
Parameters
width
The width of the scissor clip rectangle, in pixels. The initial value is 512.
The valid value range is from 0 to 512.
height
The height of the scissor clip rectangle, in pixels. The initial value is 512.
The valid value range is from 0 to 512.
Description
Sets the width and height of the scissor clip rectangle, which limits the drawing area.
Examples
Setting a 40 x 30 scissor rectangle clips the clear and bitmap drawing:
dl( SCISSOR_XY(40, 30) );
dl( SCISSOR_SIZE(80, 60) );
dl( CLEAR_COLOR_RGB(0, 0, 255) );
dl( CLEAR(1, 1, 1) );
dl( BEGIN(BITMAPS) );
dl( VERTEX2II(35, 20, 31, 0x47) );
Graphics context
The values of width and height are part of the graphics context 4.1
See also