Difference between revisions of "TPAFilterTriangle"
From SCAR Divi Manual
(Created page with "==Definition== <source lang="scar" lines="false"> procedure TPAFilterTriangle(var TPA: TPointArray; const X1, Y1, X2, Y2, X3, Y3: Integer); </source> ==Availability== SCAR Di...") |
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Revision as of 12:58, 21 November 2012
Definition
procedure TPAFilterTriangle(var TPA: TPointArray; const X1, Y1, X2, Y2, X3, Y3: Integer);
Availability
SCAR Divi 3.35 > Current
- 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)
