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What does "iteration depth" mean?
https://www.chaoticafractals.com/forum/viewtopic.php?f=7&t=5064
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Author:  fengda2870 [ Fri Oct 23, 2020 10:43 am ]
Post subject:  What does "iteration depth" mean?

I did a test,
one transformation is bubble and some pre_blur.
one transformation is linear
set "Iteration Depth " to 1024.
In my understanding, only 1024 bubbles will be generated. But that's not.
So,what does "iteration depth" mean?

Here is my code:
Code:
<IFS name="Apo3D-201022-1">
   <imaging name="img">
      <int name="image_width">512</int>
      <int name="image_height">512</int>
      <int name="image_aa_level">2</int>
      <int name="image_layers">1</int>
      <int name="image_quality">0</int>
      <string name="antialiasing_mode">strong</string>
      <real name="brightness">10</real>
      <vec4 name="background_colour">0 0 0 1</vec4>
      <bool name="apply_bg_before_curves">false</bool>
      <real name="flam3_gamma">4</real>
      <real name="flam3_vibrancy">1</real>
      <bool name="flam3_use_highlight_power">true</bool>
      <real name="flam3_highlight_power">0.01</real>
      <real name="flam3_gamma_linear_threshold">0.0075</real>
      <table name="layer_weights">
         <values>1 1 1 1</values>
      </table>
   </imaging>
   <camera name="flam3 camera">
      <vec2 name="pos">0 0</vec2>
      <real name="rotate">0</real>
      <real name="sensor_width">18500</real>
   </camera>
   <node name="iterators">
      <iterator name="Iterator 1">
         <flam3_transform name="flam3_xform 1">
            <affine2 name="Pre affine">
               <real name="x_axis_angle">0</real>
               <real name="x_axis_length">1</real>
               <real name="y_axis_angle">90</real>
               <real name="y_axis_length">1</real>
               <vec2 name="offset">0 0</vec2>
            </affine2>
            <node name="pre_transforms">
               <flam3_variation name="Transform 3">
                  <string name="variation_name">pre_blur</string>
                  <params>
                     <real name="pre_blur">10</real>
                  </params>
               </flam3_variation>
            </node>
            <node name="transforms">
               <flam3_variation name="Transform 3">
                  <string name="variation_name">bubble</string>
                  <params>
                     <real name="bubble">0.1</real>
                  </params>
               </flam3_variation>
            </node>
         </flam3_transform>
         <flam3_shader name="flam3 shader">
            <real name="palette_index">0</real>
            <real name="blend_speed">1</real>
            <real name="opacity">1</real>
            <table name="layer_weights">
               <values>1 1 1 1</values>
            </table>
         </flam3_shader>
         <weights_selector name="Iterator selection weights">
            <real name="Base weight">0.002</real>
            <node name="per_iterator_weights">
               <real name="Iterator 1 weight">0</real>
               <real name="Iterator 2 weight">1</real>
            </node>
         </weights_selector>
         <real name="time_scale">1</real>
      </iterator>
      <iterator name="Iterator 2">
         <flam3_transform name="flam3_xform 2">
            <affine2 name="Pre affine">
               <real name="x_axis_angle">-13.358179158370444</real>
               <real name="x_axis_length">1.0100511619596306</real>
               <real name="y_axis_angle">76.64182084162957</real>
               <real name="y_axis_length">1.0100511619596306</real>
               <vec2 name="offset">-0.195243 -0.093809</vec2>
            </affine2>
            <node name="transforms">
               <flam3_variation name="Transform 3">
                  <string name="variation_name">linear3D</string>
                  <params>
                     <real name="linear3D">1</real>
                  </params>
               </flam3_variation>
            </node>
         </flam3_transform>
         <flam3_shader name="flam3 shader">
            <real name="palette_index">1</real>
            <real name="blend_speed">0.001</real>
            <real name="opacity">1</real>
            <table name="layer_weights">
               <values>1 1 1 1</values>
            </table>
         </flam3_shader>
         <weights_selector name="Iterator selection weights">
            <real name="Base weight">3</real>
            <node name="per_iterator_weights">
               <real name="Iterator 1 weight">3</real>
               <real name="Iterator 2 weight">1</real>
            </node>
         </weights_selector>
         <real name="time_scale">1</real>
      </iterator>
   </node>
   <colouring>
      <table name="flam3_palette">
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      </table>
   </colouring>
</IFS>


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