Difference between revisions of "TPAFilterTriangle"
From SCAR Divi Manual
| Line 8: | Line 8: | ||
===Notes=== | ===Notes=== | ||
| − | *Before 3.37.01 the function didn't resize the filtered array | + | *Before 3.37.01 the function didn't resize the filtered array. |
==Description== | ==Description== | ||
Latest revision as of 18:50, 25 November 2012
Definition
procedure TPAFilterTriangle(var TPA: TPointArray; const X1, Y1, X2, Y2, X3, Y3: Integer);
Availability
SCAR Divi 3.35 > Current
Notes
- Before 3.37.01 the function didn't resize the filtered array.
Description
Filters points from a given TPointArray TPA by removing all points that are inside of the given triangle area. (X1, Y1), (X2, Y2) and (X3, Y3) define the corner points of the triangle.
Example
var
TPA: TPointArray;
begin
TPA := [Point(0, 0), Point(2, 2), Point(2, 3), Point(5, 10)];
WriteLn(TPAToStr(TPA));
TPAFilterTriangle(TPA, 1, 1, 1, 4, 3, 4);
WriteLn('Filtered: ' + TPAToStr(TPA));
end.Output:
(0,0);(2,2);(2,3);(5,10) Filtered: (0,0);(2,2);(5,10)
