From 13cf3fc40c7940b7cbbb2a759eff206bed97349f Mon Sep 17 00:00:00 2001
From: Andrei Zavatski <megaman9919@gmail.com>
Date: Wed, 16 Nov 2022 15:17:50 +0300
Subject: [PATCH] Make SpawnRatio public

---
 .../Background/TestSceneTrianglesV2Background.cs    | 13 +++++++++++--
 osu.Game/Graphics/Backgrounds/TrianglesV2.cs        | 12 +++++++++---
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/osu.Game.Tests/Visual/Background/TestSceneTrianglesV2Background.cs b/osu.Game.Tests/Visual/Background/TestSceneTrianglesV2Background.cs
index 59922377b0..f6207c46a5 100644
--- a/osu.Game.Tests/Visual/Background/TestSceneTrianglesV2Background.cs
+++ b/osu.Game.Tests/Visual/Background/TestSceneTrianglesV2Background.cs
@@ -12,6 +12,8 @@ namespace osu.Game.Tests.Visual.Background
 {
     public class TestSceneTrianglesV2Background : OsuTestScene
     {
+        private readonly TrianglesV2 triangles;
+
         public TestSceneTrianglesV2Background()
         {
             AddRange(new Drawable[]
@@ -25,10 +27,10 @@ namespace osu.Game.Tests.Visual.Background
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    Size = new Vector2(200),
+                    Size = new Vector2(500),
                     Masking = true,
                     CornerRadius = 40,
-                    Child = new TrianglesV2
+                    Child = triangles = new TrianglesV2
                     {
                         Anchor = Anchor.Centre,
                         Origin = Anchor.Centre,
@@ -39,5 +41,12 @@ namespace osu.Game.Tests.Visual.Background
                 }
             });
         }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            AddSliderStep("Spawn ratio", 0f, 2f, 1f, s => triangles.SpawnRatio = s);
+        }
     }
 }
diff --git a/osu.Game/Graphics/Backgrounds/TrianglesV2.cs b/osu.Game/Graphics/Backgrounds/TrianglesV2.cs
index da31c6112b..0c4bf59732 100644
--- a/osu.Game/Graphics/Backgrounds/TrianglesV2.cs
+++ b/osu.Game/Graphics/Backgrounds/TrianglesV2.cs
@@ -52,10 +52,16 @@ namespace osu.Game.Graphics.Backgrounds
         /// </summary>
         protected virtual bool CreateNewTriangles => true;
 
+        private readonly BindableFloat spawnRatio = new BindableFloat(1f);
+
         /// <summary>
         /// The amount of triangles we want compared to the default distribution.
         /// </summary>
-        protected virtual float SpawnRatio => 1;
+        public float SpawnRatio
+        {
+            get => spawnRatio.Value;
+            set => spawnRatio.Value = value;
+        }
 
         /// <summary>
         /// The relative velocity of the triangles. Default is 1.
@@ -94,7 +100,7 @@ namespace osu.Game.Graphics.Backgrounds
             colourTop.BindValueChanged(_ => updateTexture());
             colourBottom.BindValueChanged(_ => updateTexture(), true);
 
-            addTriangles(true);
+            spawnRatio.BindValueChanged(_ => Reset(), true);
         }
 
         private void updateTexture()
@@ -166,7 +172,7 @@ namespace osu.Game.Graphics.Backgrounds
             // Limited by the maximum size of QuadVertexBuffer for safety.
             const int max_triangles = ushort.MaxValue / (IRenderer.VERTICES_PER_QUAD + 2);
 
-            AimCount = (int)Math.Min(max_triangles, DrawWidth * DrawHeight * 0.001f * SpawnRatio);
+            AimCount = (int)Math.Min(max_triangles, DrawWidth * DrawHeight * 0.0005f * SpawnRatio);
 
             int currentCount = parts.Count;