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--- appwiki:blender3d [2023/04/13 08:57] – [Vertex density check] ying
+++ appwiki:blender3d [2023/12/08 04:06] (current) – [Interface] ying
@@ Line 19: / Line 19: @@
 </code>
   * restart blender, you should be able to call “from PySide2 import QtWidgets,QtCore,QtGui” without issue
+====== Common Task in Blender ======
+**set camera clipping distance**
+  - viewport, press N, to bring up tool panel, in View tab, set the far clip distance
 ====== Blender Shortcut ======
@@ Line 128: / Line 133: @@
   * display vertex count: viewport overlay icon on View3D, check statistics
     * for show selected vertex count: select object, shift+h to hide other, view count, then alt+h/undo to show all
+===== Interface =====
+**show selected vertex count and vertex count**
+  * go Preference Interface > Status Bar : check Scene statistics,
+  * then at bottom it shows statistc \\ {{:appwiki:blender3d:blender_btm_statistics.png|}}
+**show vertex index**
+  * go Preference > Interface > Display : Developer Extra checked
+  * go viewport option > Developer : check Indice
 ===== Layout in Blender 3D =====
@@ Line 190: / Line 205: @@
-====== Plugins ======
+====== Addon Plugins ======
+  * save selected as
+    * https://github.com/Tilapiatsu/blender-export_as_blend
   * Text FX: http://codeofart.com/text-fx/
@@ Line 239: / Line 257: @@
   * basically, use point density node in material setup to show the point density info as color
+    * (**first**), go Render setting tab, change render from Eevee render to Cycle CPU render
     * use object vertex as info to fit the object per material, and assign that material to that object
     * radius is vertex search radius, which decide how the density amount calculated
@@ Line 244: / Line 263: @@
 {{:appwiki:blender3d:blender_density_map_setup.png|}}
+===== Blender Material Concept =====
+  * You can view material list in > Outliner [data api view]
+  * You can check per object material usage case in > Outliner [scene view], expand the object arrow
+    * You can also check per object material usage case in > Material tab panel (object selection required)
+  * You can swith/edit object material in > Shader Editor (shift F3)
+    * object selection required
+    * if object is not assigned to any material, a New button is there instead
+  * In viewport, you can view material on object as result of (Preview material view) or (render material view)
+    * note, the (render material view) is linked to the > Render tab setting
+    * some material like Point Density can only be used in Cycle CPU render setting, so make sure Render tab is set properly for the render material view to work
+    * the default render preview is from Eevee GPU render.
+{{:appwiki:blender3d:blender_material_concept_publish.png|}}
+===== Blender Material - create height map from 3d geo =====
+ref:
+  * create height map from mesh
+    * https://blender.stackexchange.com/questions/105283/create-height-bitmap-from-mesh
+  * bake texture
+    * https://brandonsdrawings.com/texture-baking/
+the reverse process:
+  * texture driven to mesh : https://www.youtube.com/watch?v=McALCOr39rY