TPAFilterTriangle
From SCAR Divi Manual
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)
