Standard
Class Standard_GlassHemisphere

Object
  common:Generic
      common:Transform
          common:UserTransform
              Standard:Standard_GlassHemisphere

class 
UserTransform:Standard_GlassHemisphere

Object version of GlassHemisphere in Standard.uxf. Glass hemisphere effect. Originally written by Luke Plant.

Ultra Fractal Source

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 class Standard_GlassHemisphere(common.ulb:UserTransform) {
 ;
 ; Object version of GlassHemisphere in Standard.uxf.
 ; Glass hemisphere effect.
 ;
 ; Originally written by Luke Plant.
 ;
 public:
   complex func Iterate(complex pz)
     complex c = @ctr
     if @screencenter
       c = #center
     endif
 
     complex z2 = pz - c
     float x1 = 0
     float y1 = 0
     float beta = 0
     float theta1 = 0
     float x2 = 0
 
     float x1 = cabs(z2)/@width
     if x1 > 1
       return pz
     else
       ; refraction calcs
       theta1 = acos(x1)
       y1=sin(theta1)
       beta = asin(x1/@n)
       x2 = -y1/real(tan(theta1+beta))+ x1
       return z2/x1 * x2 + c
     endif
   endfunc
   
 default:
   title = "Glass Hemisphere"
   helpfile = "Uf*.chm"
   helptopic = "Html/transformations/standard/glasshemisphere.html"
   param n
     caption = "Refractive index"
     default = 2.0
     hint = "Refactive index of 'glass'"
   endparam
   param width
     caption = "Width"
     default = 1.0
     hint = "Width of hemisphere"
   endparam
   complex param ctr
     caption = "Center"
     default = #center
     enabled = !@screencenter
     hint = "Center of hemisphere"
   endparam
   param screencenter
     caption = "Use Screen Center"
     default = false
     hint = "If set, the hemisphere will be at the center of the \
             window, regardless of the Center setting."
   endparam
 }
 

Constructor Summary

Standard_GlassHemisphere()

Method Summary

complex

Iterate(complex pz) Transform a single point within a sequence

Methods inherited from class common:Transform

Init, IsSolid, IterateSilent

Methods inherited from class common:Generic

GetParent

Methods inherited from class Object

Constructor Detail

Standard_GlassHemisphere

public Standard_GlassHemisphere()

Method Detail

Iterate

public complex Iterate(complex pz)

Description copied from class: Transform

Transform a single point within a sequence

After a sequence has been set up with Init(), this function will be called once for each value in the sequence. Note that all values in the sequence must be processed in order (they cannot be processed out of order). If the sequence contains only one value, Init() will still be called and then Iterate() will be called just once.

Overrides:

Iterate in class Transform

Parameters:

pz - the complex value to be transformed

Returns:

the transformed value