Difference between revisions of "TPAExtractTriangle"
From SCAR Divi Manual
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SCAR Divi 3.35 > Current | SCAR Divi 3.35 > Current | ||
| − | *Before 3.37.01 the function didn't resize the | + | ===Notes=== |
| + | *Before 3.37.01 the function didn't resize the extracted array. | ||
==Description== | ==Description== | ||
Latest revision as of 17:50, 25 November 2012
Definition
procedure TPAExtractTriangle(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 extracted array.
Description
Extracts points from a given TPointArray TPA by removing all points that are not 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));
TPAExtractTriangle(TPA, 1, 1, 1, 4, 3, 4);
WriteLn('Extracted: ' + TPAToStr(TPA));
end.Output:
(0,0);(2,2);(2,3);(5,10) Extracted: (2,3)
