mirror of
https://github.com/ppy/osu.git
synced 2024-11-16 03:47:26 +08:00
107 lines
3.4 KiB
C#
107 lines
3.4 KiB
C#
|
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
|
|||
|
// See the LICENCE file in the repository root for full licence text.
|
|||
|
|
|||
|
using System;
|
|||
|
using System.Collections.Generic;
|
|||
|
using System.Linq;
|
|||
|
using osu.Framework.Graphics;
|
|||
|
using osu.Framework.Graphics.Containers;
|
|||
|
using osu.Framework.Graphics.Shapes;
|
|||
|
using osu.Framework.Utils;
|
|||
|
using osu.Game.Utils;
|
|||
|
using osuTK;
|
|||
|
|
|||
|
namespace osu.Game.Screens.Edit.Compose.Components
|
|||
|
{
|
|||
|
public partial class CircularPositionSnapGrid : PositionSnapGrid
|
|||
|
{
|
|||
|
private float spacing = 1;
|
|||
|
|
|||
|
/// <summary>
|
|||
|
/// The spacing between grid lines of this <see cref="CircularPositionSnapGrid"/>.
|
|||
|
/// </summary>
|
|||
|
public float Spacing
|
|||
|
{
|
|||
|
get => spacing;
|
|||
|
set
|
|||
|
{
|
|||
|
if (spacing <= 0)
|
|||
|
throw new ArgumentException("Grid spacing must be positive.");
|
|||
|
|
|||
|
spacing = value;
|
|||
|
GridCache.Invalidate();
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
protected override void CreateContent()
|
|||
|
{
|
|||
|
var drawSize = DrawSize;
|
|||
|
|
|||
|
// Calculate the maximum distance from the origin to the edge of the grid.
|
|||
|
float maxDist = MathF.Max(
|
|||
|
MathF.Max(StartPosition.Length, (StartPosition - drawSize).Length),
|
|||
|
MathF.Max((StartPosition - new Vector2(drawSize.X, 0)).Length, (StartPosition - new Vector2(0, drawSize.Y)).Length)
|
|||
|
);
|
|||
|
|
|||
|
generateCircles((int)(maxDist / Spacing) + 1);
|
|||
|
|
|||
|
GenerateOutline(drawSize);
|
|||
|
}
|
|||
|
|
|||
|
private void generateCircles(int count)
|
|||
|
{
|
|||
|
// Make lines the same width independent of display resolution.
|
|||
|
float lineWidth = 2 * DrawWidth / ScreenSpaceDrawQuad.Width;
|
|||
|
|
|||
|
List<CircularContainer> generatedCircles = new List<CircularContainer>();
|
|||
|
|
|||
|
for (int i = 0; i < count; i++)
|
|||
|
{
|
|||
|
// Add a minimum diameter so the center circle is clearly visible.
|
|||
|
float diameter = MathF.Max(lineWidth * 1.5f, i * Spacing * 2);
|
|||
|
|
|||
|
var gridCircle = new CircularContainer
|
|||
|
{
|
|||
|
BorderColour = Colour4.White,
|
|||
|
BorderThickness = lineWidth,
|
|||
|
Alpha = 0.2f,
|
|||
|
Origin = Anchor.Centre,
|
|||
|
RelativeSizeAxes = Axes.None,
|
|||
|
Width = diameter,
|
|||
|
Height = diameter,
|
|||
|
Position = StartPosition,
|
|||
|
Masking = true,
|
|||
|
Child = new Box
|
|||
|
{
|
|||
|
RelativeSizeAxes = Axes.Both,
|
|||
|
AlwaysPresent = true,
|
|||
|
Alpha = 0f,
|
|||
|
}
|
|||
|
};
|
|||
|
|
|||
|
generatedCircles.Add(gridCircle);
|
|||
|
}
|
|||
|
|
|||
|
if (generatedCircles.Count == 0)
|
|||
|
return;
|
|||
|
|
|||
|
generatedCircles.First().Alpha = 0.8f;
|
|||
|
|
|||
|
AddRangeInternal(generatedCircles);
|
|||
|
}
|
|||
|
|
|||
|
public override Vector2 GetSnappedPosition(Vector2 original)
|
|||
|
{
|
|||
|
Vector2 relativeToStart = original - StartPosition;
|
|||
|
|
|||
|
if (relativeToStart.LengthSquared < Precision.FLOAT_EPSILON)
|
|||
|
return StartPosition;
|
|||
|
|
|||
|
float length = relativeToStart.Length;
|
|||
|
float wantedLength = MathF.Round(length / Spacing) * Spacing;
|
|||
|
|
|||
|
return StartPosition + Vector2.Multiply(relativeToStart, wantedLength / length);
|
|||
|
}
|
|||
|
}
|
|||
|
}
|