rendermodes.py

Shows how to switch between different render modes and explains some of the rendermode parameters.

See also:

Loading and Displaying an Entity

# load pdb file
eh=io.LoadEntity("sdh.pdb")


sdh_go=gfx.Entity("SDH2", eh.Select("cname=A"))
# create graphical object and add it to the scene
scene.Add(sdh_go)
scene.CenterOn(sdh_go)

def Tube():
  sdh_go.SetRenderMode(gfx.TUBE)
  sdh_go.GetOptions(gfx.TUBE).SetTubeRadius(0.8)
  # apply color gradient for the atomic bfactors
  sdh_go.ColorBy("abfac",gfx.BLUE,gfx.RED)
  # and apply radius gradient as well 
  sdh_go.RadiusBy("abfac",0.8,2.2)
  
def Trace():
  sdh_go.SetRenderMode(gfx.LINE_TRACE)
  sdh_go.GetOptions(gfx.LINE_TRACE).SetLineWidth(2.5)

def Spheres():
  sdh_go.SetRenderMode(gfx.CPK)
  sdh_go.GetOptions(gfx.CPK).SetSphereDetail(4)

def Cartoon():  
  sdh_go.SetRenderMode(gfx.RenderMode.HSC)
  sdh_go.SetColor(gfx.Color(0.5, 0.5, 0.5), '')
  sdh_go.SetColor(gfx.Color(0,1,0),"rtype=H")
  sdh_go.SetDetailColor(gfx.Color(0.7,1.0,0.8),"rtype=H")
  # strands
  sdh_go.SetColor(gfx.Color(1,0,0),"rtype=E")
  sdh_go.SetDetailColor(gfx.Color(1.0,0.8,0.2),"rtype=E")
  # these are the default params for the rendering
  #sdh_go.GetOptions(gfx.HSC).SetArcDetail(4)    # circular profile detail
  #sdh_go.GetOptions(gfx.HSC).SetSphereDetail(4) # sphere detail
  #sdh_go.GetOptions(gfx.HSC).SetSplineDetail(8) # segments between backbone atoms
  #sdh_go.GetOptions(gfx.HSC).SetTubeRadius(0.4) # coil radius 
  #sdh_go.GetOptions(gfx.HSC).SetTubeRatio(1.0)  # coil axial ratio
  #sdh_go.GetOptions(gfx.HSC).SetHelixWidth(1.1)   # helical width
  #sdh_go.GetOptions(gfx.HSC).SetHelixThickness(0.2)   # helical thickness
  #sdh_go.GetOptions(gfx.HSC).SetStrandWidth(1.2)  # strand width
  #sdh_go.GetOptions(gfx.HSC).SetStrandThickness(0.2)  # strand thickness

Cartoon()
print 'Type Spheres(), Tube(), Trace(), or Cartoon()\n to switch render modes'