at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 928
at91sam9263
Manufacturer Part Number
at91sam9263
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9263.pdf
(1065 pages)
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Figure 44-11. Concave Polygon Fill
928
Concave Polygon
Complex Polygon
AT91SAM9263 Preliminary
Hardware polygon fill can render concave polygons. A concave polygon is rendered when there
is at least a straight line connecting two points inside the polygon that intersects at least two
polygon edges.
Figure 44-11
(3,3) to be loaded to vertex registers (2DGC_VXRs and 2DGC_VYRs registers) in this order.
Hardware polygon fill can render complex polygons. Complex polygons are basically concave
polygons with self intersecting edges.
Figure 44-12
loaded to vertex registers (2DGC_VXRs and 2DGC_VYRs registers) in this order.
(0,0)
(0,9)
Y
(1,4)
shows a complex polygon of five vertices (4,0), (6,2), (6,6), (2,6) and (2,2) to be
shows a polygon of eight vertices (4,1), (5,3), (7,4), (5,5), (4,7), (3,5), (1,4) and
(3,3)
(3,5)
DISPLAY
(4,1)
(4,7)
X
(5,3)
(5,5)
(7,4)
(8,0)
(8,9)
6249D–ATARM–20-Dec-07
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