From 379a8098ad4b7775119a6b57ad70c7aa6c95aa6b Mon Sep 17 00:00:00 2001
From: Stefan Hedman <schteppe@gmail.com>
Date: Sat, 4 Apr 2015 15:32:16 +0200
Subject: [PATCH] pause support for interpolation in demos

---
 demos/js/Renderer.js      | 9 +++++++--
 demos/js/WebGLRenderer.js | 4 ++--
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/demos/js/Renderer.js b/demos/js/Renderer.js
index a76d74fc..0d9644db 100644
--- a/demos/js/Renderer.js
+++ b/demos/js/Renderer.js
@@ -211,6 +211,7 @@ Object.defineProperty(Renderer.prototype, 'paused', {
         return this.settings['paused [p]'];
     },
     set: function(value) {
+        this.resetCallTime = true;
         this.settings['paused [p]'] = value;
         this.updateGUI();
     }
@@ -266,7 +267,7 @@ Renderer.prototype.setupGUI = function() {
         that.paused = p;
     });
     worldFolder.add(settings, 'manualStep [s]');
-    worldFolder.add(settings, 'fps', 10, 60*10).step(60).onChange(function(freq){
+    worldFolder.add(settings, 'fps', 10, 60*10).step(10).onChange(function(freq){
         that.timeStep = 1 / freq;
     });
     worldFolder.add(settings, 'maxSubSteps', 0, 10).step(1);
@@ -532,7 +533,11 @@ Renderer.prototype.startRenderingLoop = function(){
     function update(){
         if(!demo.paused){
             var now = Date.now() / 1000,
-                timeSinceLastCall = now-lastCallTime;
+                timeSinceLastCall = now - lastCallTime;
+            if(demo.resetCallTime){
+                timeSinceLastCall = 0;
+                demo.resetCallTime = false;
+            }
             lastCallTime = now;
             demo.world.step(demo.timeStep, timeSinceLastCall, demo.settings.maxSubSteps);
         }
diff --git a/demos/js/WebGLRenderer.js b/demos/js/WebGLRenderer.js
index 074bdd10..f01e9475 100644
--- a/demos/js/WebGLRenderer.js
+++ b/demos/js/WebGLRenderer.js
@@ -590,7 +590,7 @@ WebGLRenderer.prototype.drawPath = function(g,path,color,fillColor,lineWidth,isS
 };
 
 WebGLRenderer.prototype.updateSpriteTransform = function(sprite,body){
-    if(this.useInterpolatedPositions){
+    if(this.useInterpolatedPositions && !this.paused){
         sprite.position.x = body.interpolatedPosition[0];
         sprite.position.y = body.interpolatedPosition[1];
         sprite.rotation = body.interpolatedAngle;
@@ -634,7 +634,7 @@ WebGLRenderer.prototype.render = function(){
             bA = s.bodyA,
             bB = s.bodyB;
 
-        if(this.useInterpolatedPositions){
+        if(this.useInterpolatedPositions && !this.paused){
             p2.vec2.toGlobalFrame(worldAnchorA, s.localAnchorA, bA.interpolatedPosition, bA.interpolatedAngle);
             p2.vec2.toGlobalFrame(worldAnchorB, s.localAnchorB, bB.interpolatedPosition, bB.interpolatedAngle);
         } else {