mmf
Class MMF_TrapModeSmoothProductBelow

Object
  common:Generic
      common:TrapMode
          common:TrapModeWithThreshold
              mmf:MMF_TrapModeSmoothWithThreshold
                  mmf:MMF_TrapModeSmoothProductBelow

class 
MMF_TrapModeSmoothWithThreshold:MMF_TrapModeSmoothProductBelow

Note that this implimentation is slightly different to normal TrapModeProduct in that IterationPoints is kept as a trap counter and TransformedPoints and UntransformedPoints are initialised to 1 and multiplied by (1 + pz/cabs(pz)) and (1 + pzt/cabs(pzt)) respectively.

Ultra Fractal Source

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 class MMF_TrapModeSmoothProductBelow(MMF_TrapModeSmoothWithThreshold) {
 ;
 ; Note that this implimentation is slightly different to normal
 ; TrapModeProduct in that IterationPoints is kept as a trap counter
 ; and TransformedPoints and UntransformedPoints are initialised to
 ; 1 and multiplied by (1 + pz/cabs(pz)) and (1 + pzt/cabs(pzt))
 ; respectively.<br>
 ;
 public:
   import "common.ulb"
 
   func MMF_TrapModeSmoothProductBelow(Generic pparent)
     MMF_TrapModeSmoothWithThreshold.MMF_TrapModeSmoothWithThreshold(pparent)
   endfunc
   
   func Init(complex pz)
     m_Iterations = 0
     m_Solid = true
     int j = 3
      repeat
       m_UntransformedPoints[j] = m_OldUntransformedPoints[j] = (1,0)
       m_TransformedPoints[j] = m_OldTransformedPoints[j] = (1,0)
        m_IterationPoints[j] = m_OldIterationPoints[j] = 0
        m_Distances[j] = m_OldDistances[j] = 1.0
       m_Textures[j] = m_OldTextures[j] = 1.0
      until  (j=j-1)<0
      m_wastrapped = false
   endfunc
   
   func Iterate(complex pz, complex pzt, float pdistance, float ptexture)
     MMF_TrapModeSmoothWithThreshold.Iterate(pz, pzt, pdistance, ptexture)
     pdistance = @p_testdist - pdistance
     if pdistance>=0 && pdistance < m_Threshold
       float id = 1.0 / m_Threshold
       m_Distances[0] = m_Distances[0] * (pdistance + @adjust) * id
       m_Textures[0] = m_Textures[0] * ptexture * id
       m_UntransformedPoints[0] = m_UntransformedPoints[0] \
                                  * (1.0 + pz / cabs(pz))
       m_TransformedPoints[0] = m_TransformedPoints[0] \
                                * (1.0 + pzt / cabs(pzt))
       m_IterationPoints[0] = m_IterationPoints[0] + 1
       m_Solid = false
       m_wastrapped = true
     endif
   endfunc
   
   func OldResult()
     if m_OldIterationPoints[0]>0
        m_Distances[0] = m_OldDistances[0]
       m_Textures[0] = m_OldTextures[0]
       m_UntransformedPoints[0] = m_OldUntransformedPoints[0]
        m_TransformedPoints[0] = m_OldTransformedPoints[0]
       m_IterationPoints[0] = m_OldIterationPoints[0]
       m_Iterations = m_Iterations - 1
     endif
   endfunc
 
 default:
   title = "Smooth Product Below"
   heading
     text = "Note that this implimentation is slightly different to \
             normal Trap Mode Product in that the Iteration value is \
             kept as a trap counter and TransformedPoints and \
             UntransformedPoints will actually produce values when \
             using an appropriate Trap Color Mode such as Magnitude, \
             Real or Imaginary etc."
   endheading
   float param adjust
     caption = "Offset Distance"
     default = 0.0
     hint = "Modifies the distances found by this value before \
             multiplying. Try non-zero values if you get little \
             or no colouring variation, note that often increases \
             in the Trap Threshold will require increases in this \
             value and vice-versa."
   endparam
   float param p_testdist
     caption = "Trap Test Distance"
     default = 0.5
     hint = "Multiplies the results of distances from this distance \
             from the trap."
   endparam
 }
 

Constructor Summary

MMF_TrapModeSmoothProductBelow()

MMF_TrapModeSmoothProductBelow(Generic pparent)

Method Summary

void	Init(complex pz) call this at the beginning of each sequence
void	Iterate(complex pz, complex pzt, float pdistance, float ptexture) call this for each point
void	OldResult() call this to compute penultimate results

Methods inherited from class mmf:MMF_TrapModeSmoothWithThreshold

IterateSilent

Methods inherited from class common:TrapModeWithThreshold

GetThreshold, SetThreshold, UsesThreshold

Methods inherited from class common:TrapMode

GetDistance, GetIteration, GetTexture, GetTransformedPoint, GetUntransformedPoint, IsSolid, Result

Methods inherited from class common:Generic

GetParent

Methods inherited from class Object

Constructor Detail

MMF_TrapModeSmoothProductBelow

public MMF_TrapModeSmoothProductBelow(Generic pparent)

MMF_TrapModeSmoothProductBelow

public MMF_TrapModeSmoothProductBelow()

Method Detail

Init

public void Init(complex pz)

Description copied from class: MMF_TrapModeSmoothWithThreshold

call this at the beginning of each sequence

Overrides:

Init in class MMF_TrapModeSmoothWithThreshold

Parameters:

pz - the initial z value

Iterate

public void Iterate(complex pz,
                    complex pzt,
                    float pdistance,
                    float ptexture)

Description copied from class: MMF_TrapModeSmoothWithThreshold

call this for each point

Note that derived functions should always copy all used parameters to the "old" versions when they are changed as here.

m_wastrapped should be set to true in the derived function when the main (current) values get changed

Overrides:

Iterate in class MMF_TrapModeSmoothWithThreshold

Parameters:

pz - the z value

pzt - the transformed z value

pdistance - the trap distance

ptexture - tyhe texture value

OldResult

public void OldResult()

Description copied from class: MMF_TrapModeSmoothWithThreshold

call this to compute penultimate results

This should only be called after previously calling Result() and getting the actual result value using the Trap Color Mode since the original result values are destroyed by this call.

Overrides:

OldResult in class MMF_TrapModeSmoothWithThreshold