ShowCone

CAP - Catabolite gene Activating Protein (1BER)

Endonuclease PvuII bound to palindromic DNA recognition site CAGCTG (1PVI)

GCN4 - leucine zipper transcription factor bound to palindromic DNA recognition site ATGAC(G)TCAT (1YSA)

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Show a cone, cylinder, pyramid or prism

Command

Argument

Datatype

Default

Min

Max

Format:

ShowCone

BottomRadius = Radius of cone bottom in Å,

FLOAT

10.0

TopRadius = Radius of cone top in Å ,

FLOAT

Bottom

Height = Height of cone in Å,

FLOAT

10.0

Edges = Number of edges at top and bottom,

INT

BottomCol = Color of cone bottom,

RGBCOLOR

Red

TopCol = Color of cone top,

RGBCOLOR

BottomCol

SideCol = Color of cone side,

RGBCOLOR

TopCol

Smooth = Yes | No

STRING

Yes

Python:

result = ShowCone(bottomradius=None,topradius=None,height=None,edges=None,bottomcol=None,topcol=None,sidecol=None,smooth=None)

Menu:

Effects > Show solid > Cone, pyramid, cylinder & prism

ShowSphere, ShowBox, ShowTorus , MoveMesh

Required:

The ShowCone command creates a cone, cylinder, pyramid or prism, depending on the chosen parameters:

If 'BottomRadius' is the same as 'TopRadius', the result is a cylinder (Smooth=Yes) or prism (Smooth=No).

If either 'BottomRadius' or 'TopRadius' is zero, the result is a cone (Smooth=Yes) or pyramid (Smooth=No).

If 'BottomRadius' differs from 'TopRadius', the result is a truncated cone (Smooth=Yes) or truncated pyramid (Smooth=No).

If the 'BottomCol' or 'TopCol' is set to 'None', the corresponding side will be open.

The Edges parameter sets the number of edges that are used to approximate the bottom and top faces. The minimum number of three results in a tetrahedron or three-sided prism, four gives a four-sided pyramid or prism, and values >12 should be chosen to create a truly round shape, i.e. a cone or cylinder. In this case, 'Smooth' should also be set to 'Yes', so that the surface normals are adjusted to define a smooth, continuous face.

The created cone rotates around the origin of its local coordinate system , which is at the center of the cone. Use the MoveMesh command to shift the origin.

Example 1:

ShowCone BottomRadius=10,TopRadius=0,Height=15,Edges=4,BottomCol=Blue,SideCol=Red,Smooth=No

Show a 15 A high red four-sided pyramid with a blue base (20 A in diameter).

Example 2:

ShowCone BottomRadius=12,Height=50,Edges=20,BottomCol=Green,TopCol=Red,SideCol=Yellow

Show a cylinder with 24 A diameter, 50 A high, colored green, yellow and red.

Example macro:


# EXAMPLE ShowCone
# Requires YASARA Model
Clear
ColorBG 3030ff,a0a0e0,5050ff,c0c0ff
ColorFog c0c0ff
# Create the island
islandheight=20.
islandradius=200
ShowCone BottomRadius=(islandradius*1.5),TopRadius=(0.998*islandradius),Height=(islandheight),Edges=26,
         BottomCol=None,TopCol=c5a885,SideCol=c5a885
MoveObj Cone,Y=(-islandheight/2)
# Add the water
obj = ShowBox Width=1000,Height=2,Depth=1000,LeftCol=None,TopCol=4040ff,FrontCol=None
MoveObj (obj),Y=-10
# Create the floating matrass
matsegments=5
matsegradius=4.0
matlength=60
matcol='Green'
for i=0 to matsegments-1
  obj = ShowCone BottomRadius=(matsegradius),Height=(matlength),Edges=12,
                 BottomCol=None,SideCol=(matcol)
  dx=(1.50*matsegradius*((-0.5*(matsegments-1))+i))
  MoveMesh (obj),X=(dx)
  RotateObj (obj),X=90
  RenameObj (obj),Matrass
  for j=-1 to 1 step 2
    obj = ShowSphere Radius=(matsegradius),Color=(matcol),Level=2
    MoveMesh (obj),X=(dx),Z=(0.5*j*matlength)
    RenameObj (obj),Matrass
obj = ShowSphere Radius=(0.75*matsegradius*matsegments),Color=(matcol),Level=2,ScaleY=0.5,ScaleZ=0.5
MoveMesh (obj),Y=(1.50*matsegradius),Z=(0.5*matlength)
RenameObj (obj),Matrass
matshift=200
MoveObj Matrass,X=(matshift),Y=-10,Z=(-matshift)
AutoRotateObj Matrass,Y=0.5
# Define the look of a palm tree
stamheight=12.
stamradius=3.
stamsegments=8
crown=stamsegments
leafs=5
treeheight=stamheight*stamsegments
treeobjects=stamsegments+leafs
# Define the positions of the palm trees on the island
treeposx=00, -110,  70,  -90, -180, 130, 100
treeposz=40,   80, -60, -120,    0, 130, 0
trees=count treeposx
# Grow the palm trees
for i=1 to trees
  # Create the palm stam  
  for j=0 to stamsegments-1
    obj = ShowCone BottomRadius=(stamradius),TopRadius=(stamradius*2.0),Height=(stamheight),Edges=12,
                   BottomCol=None,TopCol=3a200a,SideCol=986c34
    MoveMesh (obj),Y=(stamheight*j)
    RenameObj (obj),Tree(i)(j)
  # Create the palm crown
  for j=1 to leafs
    obj = ShowSphere Radius=(stamradius*2.0),Color=3aae35,Level=2,ScaleY=0.8,ScaleZ=5
    RotateObj (obj),X=8,Y=(j*360/leafs)
    MoveMesh (obj),Y=(treeheight-0.5*stamheight)
    RenameObj (obj),Tree(i)(crown)
  # Move the tree to the final location
  MoveObj Tree(i)?,X=(treeposx(i)),Z=(treeposz(i))
Move -160,-26,300

Figure: Result of the example macro above.