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LCL/Graphics: Avoid separate calculation of sin and cos in AngleArc(). Issue #39983.

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wp_xyz 2022-11-02 12:38:12 +01:00
parent 58c3995804
commit 1799775107
1 changed files with 9 additions and 5 deletions
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14
lcl/include/canvas.inc
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@ -681,12 +681,16 @@ begin
end; end;
procedure TCanvas.AngleArc(X, Y: Integer; Radius: Longword; StartAngle, SweepAngle: Single); procedure TCanvas.AngleArc(X, Y: Integer; Radius: Longword; StartAngle, SweepAngle: Single);
var x1, y1, x2, y2: integer; var
x1, y1, x2, y2: integer;
sinStartAngle, cosStartAngle, sinEndAngle, cosEndAngle: Single;
begin begin
x1:=trunc(x+cos(pi*StartAngle/180)*Radius); SinCos(pi * StartAngle / 180, sinStartAngle, cosStartAngle);
y1:=trunc(y-sin(pi*StartAngle/180)*Radius); SinCos(pi * (StartAngle + SweepAngle) / 180, sinEndAngle, cosEndAngle);
x2:=trunc(x+cos(pi*(StartAngle+SweepAngle)/180)*Radius); x1:=trunc(x+cosStartAngle*Radius);
y2:=trunc(y-sin(pi*(StartAngle+SweepAngle)/180)*Radius); y1:=trunc(y-sinStartAngle*Radius);
x2:=trunc(x+cosEndAngle*Radius);
y2:=trunc(y-sinEndAngle*Radius);
LineTo(x1,y1); LineTo(x1,y1);
if SweepAngle>0 then if SweepAngle>0 then
Arc(x-Radius, y-Radius, x+Radius, y+Radius, x1, y1, x2, y2) Arc(x-Radius, y-Radius, x+Radius, y+Radius, x1, y1, x2, y2)