84
Description
Draws a polygon with n-1 vertices at work coordinates. The polygon is drawn by sequentially
painting trapezoids, using binary EOR, with line segments (DX1, DY1) – (DX2, DY2), (DX2,
DY2) – (DX3, DY3), ..., (DXn, DYn) – (DX1, DY1) specified by the parameters as the right-hand
side, with X = DXL as the left-hand side, and with top and bottom bases parallel to the X-axis.
Bottom base drawing is not performed, and so the border should be drawn using the LINEW
command. Set the minimum value of DX1 to DXn as DXL.
Example
DXL
Painting order
DXL
DXL
DXL
DXL
(DX1, DY1)
(0, 0)
n = 5
DXL
Work coordinates
(DX2, DY2)
(DX3, DY3)
(DX4, DY4)
Order of Listing FTRAP Parameters
n
DXL
DX1
DY1
DX2
DY2
DX3
DY3
DX4
DY4
DX1
DY1
Add the start point at the end
Listing order
Содержание HD64411 Q2
Страница 17: ...10 ...
Страница 31: ...24 ...
Страница 108: ...101 Example 0 0 Work coordinates Rendering coordinates XC YC ...
Страница 110: ...103 Example Old XC YC Old XC XC old YC YC 0 0 Work coordinates Rendering coordinates XC YC ...
Страница 112: ...105 Example 0 0 Work coordinates Rendering coordinates XO1 YO1 XO1 DX2 YO1 DY2 XO1 DX1 YO1 DY1 LINE ...
Страница 116: ...109 Example 0 0 Work coordinates Rendering coordinates XMIN YMIN XMAX YMAX ...
Страница 118: ...111 Example 0 0 Work coordinates Rendering coordinates XMAX YMAX ...
Страница 120: ...113 Example 0 0 Work coordinates XMIN YMIN XMAX YMAX ...
Страница 129: ...122 ...
Страница 167: ...160 ...
Страница 179: ...172 ...
Страница 213: ...206 Figure 7 20 TV Sync Mode Display Timing When DOT 0 or DOT 1 and EXHSYNC cycle is even multiple of CLK1 cycle ...