From 3f376eaf7bd32fb356e6f5961b44b94ff8445400 Mon Sep 17 00:00:00 2001
From: McHorse <mchorselessrider@gmail.com>
Date: Thu, 6 Feb 2020 17:26:09 +0000
Subject: [PATCH] Fix performance of path preview with velocity control
 (reported by Negative_Entropy and terbin)

---
 .../mchorse/aperture/camera/CameraRenderer.java     | 10 ++++++++++
 .../aperture/camera/fixtures/PathFixture.java       | 13 ++++++++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/main/java/mchorse/aperture/camera/CameraRenderer.java b/src/main/java/mchorse/aperture/camera/CameraRenderer.java
index 9e7fd5ea..397e98d9 100644
--- a/src/main/java/mchorse/aperture/camera/CameraRenderer.java
+++ b/src/main/java/mchorse/aperture/camera/CameraRenderer.java
@@ -227,6 +227,11 @@ public void onLastRender(RenderWorldLastEvent event)
 
         for (AbstractFixture fixture : profile.getAll())
         {
+            if (fixture instanceof PathFixture)
+            {
+                ((PathFixture) fixture).disableSpeed();
+            }
+
             fixture.applyFixture(0, 0.0F, profile, this.prev);
             fixture.applyFixture(fixture.getDuration(), 0.0F, profile, this.next);
 
@@ -242,6 +247,11 @@ public void onLastRender(RenderWorldLastEvent event)
 
             this.drawCard(color, i++, duration, this.prev);
             this.drawFixture(0.0F, color, fixture, this.prev, this.next);
+
+            if (fixture instanceof PathFixture)
+            {
+                ((PathFixture) fixture).reenableSpeed();
+            }
         }
 
         GlStateManager.disableBlend();
diff --git a/src/main/java/mchorse/aperture/camera/fixtures/PathFixture.java b/src/main/java/mchorse/aperture/camera/fixtures/PathFixture.java
index daf98241..d9a09801 100644
--- a/src/main/java/mchorse/aperture/camera/fixtures/PathFixture.java
+++ b/src/main/java/mchorse/aperture/camera/fixtures/PathFixture.java
@@ -60,6 +60,7 @@ public class PathFixture extends AbstractFixture
     private Point tmpPoint = new Point(0, 0, 0);
     private CachedPosition result = new CachedPosition();
     private List<CachedPosition> cache = new ArrayList<CachedPosition>();
+    private boolean disableSpeed = false;
 
     public PathFixture()
     {
@@ -102,6 +103,16 @@ public void updateSpeedCache()
         }
     }
 
+    public void disableSpeed()
+    {
+        this.disableSpeed = true;
+    }
+
+    public void reenableSpeed()
+    {
+        this.disableSpeed = false;
+    }
+
     public DurablePosition getPoint(int index)
     {
         if (this.points.size() == 0)
@@ -255,7 +266,7 @@ public void applyFixture(long ticks, float partialTicks, float previewPartialTic
         }
 
         /* If use speed is enabled */
-        if (this.useSpeed)
+        if (this.useSpeed && !this.disableSpeed)
         {
             float tick = ticks + previewPartialTick;