Changeset 10935

Timestamp:

01/08/10 12:37:35 (3 years ago)

Author:

robert

Message:

From Marius Heise, "osgShadow was using single precision variables for light positioning and orientation. This was causing precision problems (shadow jumping) with big databases (eg. geocentric created vpb). This patch fixes this by using double precision variables for light positioning and orientation. It works for all algorithms dreived form osgShadow::StandardShadowMap?.
"

Files:

• OpenSceneGraph/trunk/src/osgShadow/StandardShadowMap.cpp (modified) (4 diffs)

OpenSceneGraph/trunk/src/osgShadow/StandardShadowMap.cpp

@@ -678 +678 @@
     if( light->getSpotCutoff() < 180.0f) // spotlight, no need for bounding box
     {
-        osg::Vec3 position(lightPos.x(), lightPos.y(), lightPos.z());
+        osg::Vec3d position(lightPos.x(), lightPos.y(), lightPos.z());
         float spotAngle = light->getSpotCutoff();
 
@@ -688 +688 @@
         if (lightPos[3]!=0.0)   // point light
         {
-            osg::Vec3 position(lightPos.x(), lightPos.y(), lightPos.z());
+            osg::Vec3d position(lightPos.x(), lightPos.y(), lightPos.z());
 
             float centerDistance = (position-bs.center()).length();
@@ -695 +695 @@
             float zfar  = centerDistance+bs.radius();
             float zNearRatio = 0.001f;
-            if (znear<zfar*zNearRatio) znear = zfar*zNearRatio;
+            if (znear<zfar*zNearRatio)
+                znear = zfar*zNearRatio;
 
             float top   = (bs.radius()/centerDistance)*znear;
@@ -709 +710 @@
             // set the position far away along the light direction
             float radius = bs.radius();
-            osg::Vec3 position = bs.center() - lightDir * radius * 2;
+            osg::Vec3d position = bs.center() - lightDir * radius * 2;
 
             float centerDistance = (position-bs.center()).length();