RepoMirrors
/
osu
mirror of https://github.com/ppy/osu
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add more comments

This commit is contained in:
OliBomby 2024-10-03 11:49:45 +02:00
parent 0695d51968
commit 19d8be4890
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
osu.Game.Rulesets.Osu/Edit/OsuSelectionScaleHandler.cs
View File

@ -244,6 +244,7 @@ public Vector2 ClampScaleToPlayfieldBounds(Vector2 scale, Vector2? origin = null
return scale;
// Clamps the scale vector s such that the point p scaled by s is within the rectangle defined by lowerBounds and upperBounds
Vector2 clampToBound(Vector2 s, Vector2 p, Vector2 lowerBounds, Vector2 upperBounds)
{
p -= actualOrigin;
@ -286,18 +287,25 @@ Vector2 clampToBound(Vector2 s, Vector2 p, Vector2 lowerBounds, Vector2 upperBou
return s;
}
// Computes the bounds for the magnitude of the scaled point p with respect to the bounds lowerBounds and upperBounds
(float, float) computeBounds(Vector2 lowerBounds, Vector2 upperBounds, Vector2 p)
{
var sLowerBounds = Vector2.Divide(lowerBounds, p);
var sUpperBounds = Vector2.Divide(upperBounds, p);
// If the point is negative, then the bounds are flipped
if (p.X < 0)
(sLowerBounds.X, sUpperBounds.X) = (sUpperBounds.X, sLowerBounds.X);
if (p.Y < 0)
(sLowerBounds.Y, sUpperBounds.Y) = (sUpperBounds.Y, sLowerBounds.Y);
// If the point is at zero, then any scale will have no effect on the point so the bounds are infinite
// The float division would already give us infinity for the bounds, but the sign is not consistent so we have to manually set it
if (Precision.AlmostEquals(p.X, 0))
(sLowerBounds.X, sUpperBounds.X) = (float.NegativeInfinity, float.PositiveInfinity);
if (Precision.AlmostEquals(p.Y, 0))
(sLowerBounds.Y, sUpperBounds.Y) = (float.NegativeInfinity, float.PositiveInfinity);
return (MathF.Max(sLowerBounds.X, sLowerBounds.Y), MathF.Min(sUpperBounds.X, sUpperBounds.Y));
}
}