[MERGED] patch to set temporary directory

since vista tries to make the application folder read-only you should write all your data into the users folder. This patch add a method to specify the path where the impostor images should be written to.

patch:

Index: include/ImpostorPage.h
===================================================================
--- include/ImpostorPage.h (revision 1634)
+++ include/ImpostorPage.h (working copy)
@@ -311,6 +311,7 @@
Ogre::SceneManager *sceneMgr;
Ogre::Entity *entity;
Ogre::String entityKey;
+ ImpostorPage *group;

Ogre::MaterialPtr material[IMPOSTOR_PITCH_ANGLES][IMPOSTOR_YAW_ANGLES];
Ogre::TexturePtr texture;
Index: include/PagedGeometry.h
===================================================================
--- include/PagedGeometry.h (revision 1634)
+++ include/PagedGeometry.h (working copy)
@@ -179,6 +179,8 @@
*/
void setCamera(Ogre::Camera *cam);

+ void setTempDir(Ogre::String dir);
+
/**
\brief Gets the camera which is used to calculate levels of detail.
\returns The camera assigned to this PagedGeometry object.
@@ -613,6 +615,8 @@
/** INTERNAL FUNCTION - DO NOT USE */
Ogre::Vector3 _convertToLocal(const Ogre::Vector3 &globalVec);

+ Ogre::String getTempdir() { return this->tempdir; };
+
protected:
//Internal function - do not use
void _addDetailLevel(GeometryPageManager *mgr, Ogre::Real maxRange, Ogre::Real transitionLength);
@@ -645,6 +649,8 @@
//Time-related data
Ogre::Timer timer;
unsigned long lastTime;
+
+ Ogre::String tempdir;
};


Index: source/ImpostorPage.cpp
===================================================================
--- source/ImpostorPage.cpp (revision 1634)
+++ source/ImpostorPage.cpp (working copy)
@@ -321,6 +321,7 @@
{
//Store scene manager and entity
ImpostorTexture::sceneMgr = group->sceneMgr;
+ ImpostorTexture::group = group;
ImpostorTexture::entity = entity;

//Add self to list of ImpostorTexture's
@@ -529,7 +530,8 @@
for (i = 0; i < sizeof(key); ++i)
key[i] = (key[i] % 26) + 'A';

- ResourceGroupManager::getSingleton().addResourceLocation(".", "FileSystem", "BinFolder");
+ String tempdir = this->group->geom->getTempdir();
+ ResourceGroupManager::getSingleton().addResourceLocation(tempdir, "FileSystem", "BinFolder");
String fileName = "Impostor." + String(key, sizeof(key)) + '.' + StringConverter::toString(textureSize) + ".png";

//Attempt to load the pre-render file if allowed
@@ -569,7 +571,7 @@

#if IMPOSTOR_FILE_SAVE
//Save RTT to file
- renderTarget->writeContentsToFile(fileName);
+ renderTarget->writeContentsToFile(tempdir + fileName);

//Load the render into the appropriate texture view
texture = TextureManager::getSingleton().load(fileName, "BinFolder", TEX_TYPE_2D, MIP_UNLIMITED);
Index: source/PagedGeometry.cpp
===================================================================
--- source/PagedGeometry.cpp (revision 1634)
+++ source/PagedGeometry.cpp (working copy)
@@ -59,6 +59,8 @@

//Misc.
pageLoader = NULL;
+
+ this->tempdir = ".";
}

PagedGeometry::~PagedGeometry()
@@ -73,6 +75,11 @@
removeDetailLevels();
}

+void PagedGeometry::setTempDir(Ogre::String dir)
+{
+ this->tempdir = dir;
+}
+
void PagedGeometry::setPageLoader(PageLoader *loader)
{
pageLoader = loader;



usage:

PagedGeometry *p = new PagedGeometry();
// you should look up the MSDN how to get some system path
p->setTempDir(yourWindowsUserPath);


i just tried to update to latest SVN HEAD version, and have not found a feature that would enable to set the temp directory? Have i overlooked it or was the functionality not integrated?

This is really needed, since we cannot save the impostor images in just any directory ...

And is it necessary to save render target to file? How about use http://www.ogre3d.org/docs/api/html/classOgre_1_1RenderTarget.html#6277cd30654d93dbfa7bb07275bbceb4 and create texture from pixelbox... ?

And is it necessary to save render target to file? How about use http://www.ogre3d.org/docs/api/html/classOgre_1_1RenderTarget.html#6277cd30654d93dbfa7bb07275bbceb4 and create texture from pixelbox... ?
i think the point to save the texture to file is the speed on the second start. If you have a terrain with ~10 imposters it can take some time. So after the first start it will re-use the already present ones from the filesystem.

So in my opinion it really makes sense, just not in the application directory

merged with svn