Integrate changes into 1.5 branch so I can tag it for 1.5.4

panda/src/grutil/geoMipTerrain.I

@@ -1,6 +1,6 @@
 // Filename: geoMipTerrain.I
 // Created by:  pro-rsoft (29jun07)
-// Last updated by: pro-rsoft (24sep08)
+// Last updated by: pro-rsoft (03mar08)
 //
 ////////////////////////////////////////////////////////////////////
 //
@@ -13,8 +13,6 @@
 //
 ////////////////////////////////////////////////////////////////////
 
-#include "config_grutil.h"
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::Constructor
 //       Access: Published
@@ -26,13 +24,9 @@ GeoMipTerrain(const string &name) {
   _root_flattened = false;
   _xsize = 0;
   _ysize = 0;
-  _block_size = 16;
-  _max_level = 4; // Always log(_block_size) / log(2.0)
   _min_level = 0;
+  _block_size = 16;
   _factor = 100.0;
-  _near = 16.0;
-  _far = 128.0;
-  _use_near_far = false;
   _has_color_map = false;
   PT(PandaNode) tmpnode = new PandaNode("tmp_focal");
   _auto_flatten = AFM_off;
@@ -64,7 +58,6 @@ INLINE PNMImage &GeoMipTerrain::
 heightfield() {
   return _heightfield;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::color_map
 //       Access: Published
@@ -76,7 +69,6 @@ INLINE PNMImage &GeoMipTerrain::
 color_map() {
   return _color_map;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::set_bruteforce
 //       Access: Published
@@ -93,7 +85,6 @@ set_bruteforce(bool bf) {
   }
   _bruteforce = bf;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::get_bruteforce
 //       Access: Published
@@ -105,7 +96,6 @@ INLINE bool GeoMipTerrain::
 get_bruteforce() {
   return _bruteforce;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::set_auto_flatten
 //       Access: Private
@@ -113,12 +103,12 @@ get_bruteforce() {
 //               flatten_light, flatten_medium, or flatten_strong)
 //               after each update.  This only affects future
 //               updates, it doesn't flatten the current terrain.
+//                
 ////////////////////////////////////////////////////////////////////
 INLINE void GeoMipTerrain::
 set_auto_flatten(int mode) {
   _auto_flatten = mode;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::set_focal_point
 //       Access: Published
@@ -163,7 +153,6 @@ set_focal_point(NodePath fp) {
   _focal_point = fp;
   _focal_is_temporary = false;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::get_focal_point
 //       Access: Published
@@ -204,7 +193,6 @@ INLINE void GeoMipTerrain::
 set_min_level(unsigned short minlevel) {
   _min_level = minlevel;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::get_min_level
 //       Access: Published
@@ -217,19 +205,6 @@ INLINE unsigned short GeoMipTerrain::
 get_min_level() {
   return _min_level;
 }
-
-////////////////////////////////////////////////////////////////////
-//     Function: GeoMipTerrain::get_max_level
-//       Access: Published
-//  Description: Returns the highest level possible for this block
-//               size. When a block is at this level, it will be
-//               the worst quality possible.
-////////////////////////////////////////////////////////////////////
-INLINE unsigned short GeoMipTerrain::
-get_max_level() {
-  return _max_level;
-}
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::get_block_size
 //       Access: Published
@@ -239,7 +214,6 @@ INLINE unsigned short GeoMipTerrain::
 get_block_size() {
   return _block_size;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::set_block_size
 //       Access: Published
@@ -265,7 +239,6 @@ set_block_size(unsigned short newbs) {
   _max_level = (unsigned short) (log((double) _block_size) / log(2.0));
   _is_dirty = true;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::is_dirty
 //       Access: Published
@@ -280,12 +253,10 @@ INLINE bool GeoMipTerrain::
 is_dirty() {
   return _is_dirty;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::set_factor
 //       Access: Published
-//  Description: DEPRECATED method. Use set_near/far instead.
-//               Sets the quality factor at which blocks must be
+//  Description: Sets the quality factor at which blocks must be
 //               generated. The higher this level, the better
 //               quality the terrain will be, but more expensive
 //               to render. A value of 0 makes the terrain the
@@ -294,49 +265,22 @@ is_dirty() {
 ////////////////////////////////////////////////////////////////////
 INLINE void GeoMipTerrain::
 set_factor(float factor) {
-  grutil_cat.debug() << "Using deprecated method set_factor, use set_near and set_far instead!\n";
-  _use_near_far = false;
   _factor = factor;
 }
-
-////////////////////////////////////////////////////////////////////
-//     Function: GeoMipTerrain::set_near_far
-//       Access: Published
-//  Description: Sets the near and far LOD distances in one call.
-////////////////////////////////////////////////////////////////////
-INLINE void GeoMipTerrain::
-set_near_far(double input_near, double input_far) {
-  _use_near_far = true;
-  _near = input_near;
-  _far = input_far;
-}
-
-////////////////////////////////////////////////////////////////////
-//     Function: GeoMipTerrain::set_near
-//       Access: Published
-//  Description: Sets the near LOD distance, at which the terrain
-//               will be rendered at highest quality.
-//               This distance is in the terrain's coordinate space!
-////////////////////////////////////////////////////////////////////
-INLINE void GeoMipTerrain::
-set_near(double input_near) {
-  _use_near_far = true;
-  _near = input_near;
-}
-
 ////////////////////////////////////////////////////////////////////
-//     Function: GeoMipTerrain::set_far
+//     Function: GeoMipTerrain::get_factor
 //       Access: Published
-//  Description: Sets the far LOD distance, at which the terrain
-//               will be rendered at lowest quality.
-//               This distance is in the terrain's coordinate space!
+//  Description: Gets the quality factor at which blocks must be
+//               generated. The higher this level, the better
+//               quality the terrain will be, but more expensive
+//               to render. A value of 0 makes the terrain the
+//               lowest quality possible, depending on blocksize.
+//               The default value is 100.
 ////////////////////////////////////////////////////////////////////
-INLINE void GeoMipTerrain::
-set_far(double input_far) {
-  _use_near_far = true;
-  _far = input_far;
+INLINE float GeoMipTerrain::
+get_factor() {
+  return _factor;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::get_block_node_path
 //       Access: Published
@@ -390,25 +334,13 @@ lod_decide(unsigned short mx, unsigned short my) {
   cx = (cx * _block_size + _block_size / 2) * _root.get_sx();
   cy = (cy * _block_size + _block_size / 2) * _root.get_sy();
   float d;
-  if (_use_near_far) {
+  if (_factor > 0.0) {
     d = sqrt(pow(_focal_point.get_x(_root) - cx, 2) +
-             pow(_focal_point.get_y(_root) - cy, 2));
-    if (d < _near) {
-      return 0;
-    } else if (d > _far) {
-      return _max_level;
-    } else {
-      return (d - _near) / (_far - _near) * _max_level * (1.0 - (_min_level / _max_level)) + _min_level;
-    }
+             pow(_focal_point.get_y(_root) - cy, 2)) / _factor;
   } else {
-    if (_factor > 0.0) {
-      d = sqrt(pow(_focal_point.get_x(_root) - cx, 2) +
-               pow(_focal_point.get_y(_root) - cy, 2)) / _factor;
-    } else {
-      d = _max_level;
-    }
-    return short(floor(d));
+    d = log((double) _block_size) / log(2.0);
   }
+  return short(floor(d));
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -473,8 +405,11 @@ set_heightfield(const PNMImage &image) {
   return false;
 }
 INLINE bool GeoMipTerrain::
-set_heightfield(const string &path) {
-  return set_heightfield(Filename(path));
+set_heightfield(const Texture *tex) {
+  grutil_cat.warning() << "Setting a texture as heightfield image is deprecated!\n";
+  PNMImage image;
+  tex->store(image);
+  return set_heightfield(image);
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -508,11 +443,6 @@ set_color_map(const Texture *tex) {
   _is_dirty = true;
   return true;
 }
-INLINE bool GeoMipTerrain::
-set_color_map(const string &path) {
-  return set_heightfield(Filename(path));
-}
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::has_color_map
 //       Access: Published
@@ -522,7 +452,6 @@ INLINE bool GeoMipTerrain::
 has_color_map() {
   return _has_color_map;
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::clear_color_map
 //       Access: Published
@@ -535,7 +464,6 @@ clear_color_map() {
     _has_color_map = false;
   }
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::get_pixel_value
 //       Access: Private
@@ -547,13 +475,11 @@ INLINE double GeoMipTerrain::
 get_pixel_value(int x, int y) {
   x = max(min(x,int(_xsize-1)),0);
   y = max(min(y,int(_ysize-1)),0);
-  if (_heightfield.is_grayscale()) {
-    return double(_heightfield.get_bright(x, y));
-  } else {
-    return double(_heightfield.get_red(x, y))
-         + double(_heightfield.get_green(x, y)) / 256.0
-         + double(_heightfield.get_blue(x, y)) / 65536.0;
-  }
+  return double(_heightfield.get_bright(int(x),int(y)));
+/*  return double(_heightfield.get_red_val(int(x),int(y))
+              + _heightfield.get_green_val(int(x),int(y)) * 256
+              + _heightfield.get_blue_val(int(x),int(y)) * 65536) / 16777215.0;
+*/
 }
 INLINE double GeoMipTerrain::
 get_pixel_value(unsigned short mx, unsigned short my, int x, int y) {
@@ -619,7 +545,6 @@ INLINE bool GeoMipTerrain::
 is_power_of_two(unsigned int i) {
   return !((i - 1) & i);
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::f_part
 //       Access: Private
@@ -634,7 +559,6 @@ INLINE double GeoMipTerrain::
 f_part(double i) {
   return i - floor(i);
 }
-
 ////////////////////////////////////////////////////////////////////
 //     Function: GeoMipTerrain::sfav
 //       Access: Private