Difference between revisions of "Spheres"

Latest revision as of 17:02, 25 July 2023

Normal Sphere Representation Example

To enable the spheres representation do the following for any selection SEL,

show spheres, SEL

alter selection, vdw=number

Shrink the size of all Iron atoms:

alter elem fe, vdw=1.0
rebuild

Dramatically enlarge all spheres in an object

alter object, vdw=4.0
rebuild

@@ Line 1: / Line 1: @@
-[[Image:Spheres_ex.png|thumb|Normal Sphere Representation Example|center]]
+[[Image:Spheres_ex.png|thumb|right|Normal Sphere Representation Example|center]]
 ==Representation==
@@ Line 5: / Line 5: @@
   show spheres, SEL
-==OpenGL Shaders & Spheres==
+==Adjusting Sphere Size==
-Newer OpenGL supported cards (like the NVidia 5950 Ultra, or the 6800 GT Ultra) support '''Shaders'''.  Shaders are best used for massive numbers of molecules that are to be represented as spheres.  Typical ranges will now include 500 000 to 3 000 000 atoms!  Take a look, the following example is of a viral nucleocapsid: 261 240 atoms!  Performance and visual quality -- without rendering -- are far improved.
-===Comparing Shaders and No-Shaders===
+<source lang="python">
-[[Image:No_shader.jpg|thumb|Normal spheres: no shaders|center]]
+alter selection, vdw=number
-[[Image:Shader.jpg|thumb|(sphere_mode=5) Shader Spheres|center]]
+</source>
-To turn on Sphere Shaders use
+===Examples===
- set sphere_mode, 5
+Shrink the size of all Iron atoms:
- as spheres, SEL
+<source lang="python">
-where '''SEL''' is the name of your selection.  Getting normal sphere mode back is easy:
+alter elem fe, vdw=1.0
- set sphere_mode, 4
+rebuild
- as spheres, SEL
+</source>
+Dramatically enlarge all spheres in an object
+<source lang="python">
+alter object, vdw=4.0
+rebuild
+</source>
 [[Category:Representations|Spheres]]
+[[Category:Performance]]