Dangerous "reset".

Normand Briere

2019-11-07 f868664f7e7626f651e6ade9c9f6863851ef43b7

 Camera.java
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@@ -3,7 +3,6 @@
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 // Decompiler options: packimports(3) 
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 // Source File Name:   Camera.java
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-
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 class Camera extends Object3D
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 {
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     static final long serialVersionUID = 4754289789178680517L;
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@@ -21,7 +20,7 @@
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         //<-2.2,0.7,-2> and pointed it at <-0.61,0.3,-0.6>
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     //    location = LA.newVector(2,0.7,-2);
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     //    lookAt = new cVector(0.6,0.3,-0.6);
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-        location = LA.newVector(3,2,2);
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+        location = LA.newVector(6,2,4);
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         lookAt = new cVector(0.0,0.5,0);
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         direction = new cVector();
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         toParent = LA.newMatrix();
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@@ -53,7 +52,7 @@
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             perspective = true;
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             break;
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         case 1: // '\001'
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-            location = LA.newVector(0, 0, 4);
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+            location = LA.newVector(0, 0, 4); // Needed for translation direction
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             perspective = false;
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             break;
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         case 2: // '\002'
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@@ -64,7 +63,7 @@
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             //LA.matXRotate(fromScreen, LA.toRadians(90));
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             break;
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         case 3: // '\003'
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-            location = LA.newVector(4, 0, 0);
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+            location = LA.newVector(4, 0, 0); // Needed for translation direction
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             //LA.matZRotate(toScreen, LA.toRadians(-90));
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             //LA.matXRotate(toScreen, LA.toRadians(-90));
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             //LA.matXRotate(fromScreen, LA.toRadians(90));
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@@ -72,7 +71,7 @@
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             perspective = false;
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             break;
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         case 4: // Default light
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-            location = LA.newVector(10, 30, 20);
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+            location = LA.newVector(-5, 15, 10);
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             perspective = false;
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             break;
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         }
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@@ -105,6 +104,15 @@
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         focalLength = 1;
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         setAspect(4, 3);
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         background = LA.newVector(0.8, 0.8, 0.8);
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+    }
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+
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+    void CreateMaterial(boolean multiply)
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+    {
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+        super.CreateMaterial(multiply);
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+        
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+        material.shift = 90;
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+        material.cameralight = 0.2f;
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+        material.shadowbias = 10;
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     }
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     void setAspect(int width, int height)
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@@ -151,6 +159,11 @@
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 	void RotatePosition(float dx, float dy)
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 	{
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         if(hAspect != 0) return;
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+        
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+        if (CameraPane.IMAGEFLIP)
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+        {
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+            dx = -dx;
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+        }
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         if (CameraPane.ROTATECAMERA)
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         {
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@@ -208,6 +221,11 @@
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 	void Translate(float dx, float dy, float scale)
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 	{
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         if(hAspect != 0) return;
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+        
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+        if (CameraPane.IMAGEFLIP)
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+        {
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+            dx = -dx;
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+        }
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         if (CameraPane.ROTATECAMERA)
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         {
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@@ -268,11 +286,11 @@
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                 if (scale == 0)
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                 {
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                     // Zoom
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+                    double factor = Math.exp(-dy/300.0); // (1 + dy/100);
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+
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                     LA.vecSub(location, lookAt, location);
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                     cVector p = location;
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-
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-                    double factor = Math.exp(-dy/300.0); // (1 + dy/100);
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                     p.x *= factor;
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                     p.y *= factor;
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@@ -285,7 +303,7 @@
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                     LA.vecSub(location, lookAt, direction);
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                     //scale /= Distance();
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-                    scale /= shaper_fovy/20;
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+           //         scale /= shaper_fovy/20;
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                     location.x -= dy * direction.x / scale;
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                     //location.y -= dy * direction.y / scale;
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@@ -306,19 +324,35 @@
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 	void RotateInterest(float dx, float dy)
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 	{
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+            right.mul(-1);
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+            
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             cStatic.point1.set(location);
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             location.set(lookAt);
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             lookAt.set(cStatic.point1);
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-            right.mul(-1);
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+            
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+            if (viewCode == 0 && locationBuf != null)
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+            {
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+                cStatic.point1.set(locationBuf);
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+                locationBuf.set(lookAtBuf);
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+                lookAtBuf.set(cStatic.point1);
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+            }
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          //   UP.mul(-1);
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             RotatePosition(dx,-dy);
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          //   UP.mul(-1);
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             right.mul(-1);
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+            
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             cStatic.point1.set(location);
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             location.set(lookAt);
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             lookAt.set(cStatic.point1);
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+            
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+            if (viewCode == 0 && locationBuf != null)
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+            {
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+                cStatic.point1.set(locationBuf);
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+                locationBuf.set(lookAtBuf);
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+                lookAtBuf.set(cStatic.point1);
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+            }
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             computeTransform();
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 	}
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@@ -333,33 +367,85 @@
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             fromScreen = LA.newMatrix();
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         }
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+        if (locationBuf == null)
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+        {
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+            locationBuf = new cVector();
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+            locationBuf.set(location);
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+            lookAtBuf = new cVector();
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+            lookAtBuf.set(lookAt);
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+            upBuf = new cVector();
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+            upBuf.set(UP);
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+//            up2Buf = new cVector();
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+//            up2Buf.set(UP2);
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+        }
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+        else
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+        {
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+            double K = 0.25;
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+            
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+            if (!CameraPane.capsLocked || CameraPane.ambientOcclusion)
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+                K = 1;
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+            
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+            locationBuf.y = location.y * K + locationBuf.y * (1 - K);
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+            lookAtBuf.y = lookAt.y * K + lookAtBuf.y * (1 - K);
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+            
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+            int Y = 1;
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+            
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+            if (UP.y < 0)
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+                Y = -1;
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+            
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+            UP.x = 0 * K + UP.x * (1 - K);
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+            UP.y = Y * K + UP.y * (1 - K);
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+            UP.z = 0 * K + UP.z * (1 - K);
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+            UP.normalize();
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+            
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+            if (CameraPane.capsLocked && !CameraPane.ambientOcclusion)
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+                K = 0.1;
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+            
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+            upBuf.x = UP.x * K + upBuf.x * (1 - K);
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+            upBuf.y = UP.y * K + upBuf.y * (1 - K);
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+            upBuf.z = UP.z * K + upBuf.z * (1 - K);
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+            upBuf.normalize();
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+//            up2Buf.x = UP2.x * K + up2Buf.x * (1 - K);
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+//            up2Buf.y = UP2.y * K + up2Buf.y * (1 - K);
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+//            up2Buf.z = UP2.z * K + up2Buf.z * (1 - K);
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+            
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+            K = 1;
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+            
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+            locationBuf.x = location.x * K + locationBuf.x * (1 - K);
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+            locationBuf.z = location.z * K + locationBuf.z * (1 - K);
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+            lookAtBuf.x = lookAt.x * K + lookAtBuf.x * (1 - K);
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+            lookAtBuf.z = lookAt.z * K + lookAtBuf.z * (1 - K);
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+        }
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+        
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         cVector up2 = up;
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         cVector right2 = right;
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-	up2.x = UP.x;
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-	up2.y = UP.y;
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-	up2.z = UP.z;
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-        LA.vecSub(lookAt, location, away);
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+	up2.x = upBuf.x;
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+	up2.y = upBuf.y;
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+	up2.z = upBuf.z;
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+        LA.vecSub(lookAtBuf, locationBuf, away);
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         LA.vecNormalize(away);
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         LA.vecCross(away, up2, right2);
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 		if (right2.length2() < 0.0001)
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 		{
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+                    //System.out.println("right2.length2() < 0.0001");
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 			// UP failed
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 			up2.x = UP2.x;
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 			up2.y = UP2.y;
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 			up2.z = UP2.z;
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-			LA.vecSub(lookAt, location, away);
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-			LA.vecNormalize(away);
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 			LA.vecCross(away, up2, right2);
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 			if (!(right2.length2() > 0))
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                         {
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+                            System.out.println("NO UP VECTOR: " + up2);
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+                            System.out.println("lookAtBuf: " + lookAtBuf);
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+                            System.out.println("locationBuf: " + locationBuf);
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+                    System.exit(0);
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+
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                             // old problem...
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                             assert (right2.length2() <= 0 || right2.length2() > 0); // weirdest thing ever
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                             up2.x = UP.x = 0;
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                             up2.y = UP.y = 1;
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                             up2.z = UP.z = 0;
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-                            LA.vecSub(lookAt, location, away);
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-                            LA.vecNormalize(away);
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                             LA.vecCross(away, up2, right2);
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                         }
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 		}
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@@ -382,10 +468,10 @@
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 		}
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469
 
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         for (int i=0; i < 3; i++)
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-            fromScreen[3][i] = location.get(i);
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+            fromScreen[3][i] = locationBuf.get(i);
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         for (int i=0; i < 3; i++)
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-            temp[3][i] = -location.get(i);
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+            temp[3][i] = -locationBuf.get(i);
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         LA.matConcat(temp, toScreen, toScreen);
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477
 
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@@ -397,9 +483,16 @@
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             LA.matConcat(fromScreen, rotate, fromScreen);
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             //LA.matConcat(toScreen, rotate_1, toScreen);
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         }
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+        
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+        if (CameraPane.IMAGEFLIP)
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+        {
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+            double[][] flip = { { -1,0,0,0 }, { 0,1,0,0}, { 0,0,1,0}, { 0,0,0,1 } };
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+        
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+            LA.matConcat(fromScreen, flip, fromScreen);
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+        }
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+        
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 		//if (this == CameraPane.lightCamera)
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 			//CameraPane.lighttouched = true;
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-        
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         LA.matInvert(fromScreen, toScreen);
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     }
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@@ -465,11 +558,20 @@
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     static final int viewFront = 2;
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     static final int viewSide = 3;
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     int viewCode;
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+    
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     cVector location;
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     cVector lookAt;
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+    
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+    transient cVector locationBuf;
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+    transient cVector lookAtBuf;
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+    transient cVector upBuf;
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+    //transient cVector up2Buf;
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+    
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     cVector direction;
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-    double toScreen[][];
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-    double fromScreen[][];
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+    
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+    double[][] toScreen;
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+    double[][] fromScreen;
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+    
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     boolean perspective;
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     int hAspect = 0; // Free camera
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     int vAspect;