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Fixed a problem where translucent 3D floors were drawn solid. The cause was a rounding error because of the transition from float to double.

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This commit is contained in:
biwa 2020-06-20 01:21:17 +02:00
parent 22d00763a9
commit 233153cdb5
1 changed files with 7 additions and 7 deletions
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14
Source/Core/Geometry/Angle2D.cs
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@ -27,10 +27,10 @@ namespace CodeImp.DoomBuilder.Geometry
#region ================== Constants
public const double PI = Math.PI;
public const double PIHALF = Math.PI * 0.5f;
public const double PI2 = Math.PI * 2f;
public const double PIDEG = 57.295779513082320876798154814105f;
public const double SQRT2 = 1.4142135623730950488016887242097f;
public const double PIHALF = Math.PI * 0.5;
public const double PI2 = Math.PI * 2;
public const double PIDEG = 57.295779513082320876798154814105;
public const double SQRT2 = 1.4142135623730950488016887242097;
#endregion
@ -109,10 +109,10 @@ namespace CodeImp.DoomBuilder.Geometry
// It's a good idea to check explicitly if cos2 is within [-1 .. 1] range
double alpha2 =
(cos2 <= -1) ? PI :
(cos2 >= 1) ? 0.0f :
(cos2 >= 1) ? 0.0 :
Math.Acos(cos2);
double rs = alpha2 * 0.5f;
double rs = alpha2 * 0.5;
// Now revolve the ambiguities.
// 1. If dot product of two vectors is negative - the angle is definitely
@ -124,7 +124,7 @@ namespace CodeImp.DoomBuilder.Geometry
// 2. Determine the sign. For this we'll use the Determinant of two vectors.
double det = (ab.x * cb.y - ab.y * cb.x);
if(det < 0) rs = (2.0f * PI) - rs;
if(det < 0) rs = (2.0 * PI) - rs;
return rs;
}