my first two pieces

[logic]

Here are my first two pieces:

Information Overload

Based on chris' "Self-dividing grid", this was what helped me understand that the fundamental paradigm of Context Free is to make things smaller as you recurse Otherwise, the drawing never ends.



(download)

Code: Select all

startshape MATRIX
background { sat 1 b -1 alpha 1 }

rule MATRIX
{
  MATRIX { s 0.5 1 x -0.25 }
  MATRIX { s 0.5 1 x +0.25 }
}

rule MATRIX
{
  MATRIX { s 1 0.5 y -0.25 }
  MATRIX { s 1 0.5 y +0.25 }
}

rule MATRIX .3
{
  GREENGLYPH {}
}

rule GREENGLYPH { GLYPH { hue 120 sat 1 b 0.3 } }
rule GREENGLYPH { GLYPH { hue 120 sat 1 b 0.4 } }
rule GREENGLYPH { GLYPH { hue 120 sat 1 b 0.5 } }
rule GREENGLYPH { GLYPH { hue 120 sat 1 b 0.6 } }
rule GREENGLYPH { GLYPH { hue 120 sat 1 b 0.7 } }

include i_pix.cfdg

rule GLYPH { A_5by5 {} }
rule GLYPH { B_5by5 {} }
rule GLYPH { C_5by5 {} }
rule GLYPH { D_5by5 {} }
rule GLYPH { E_5by5 {} }
rule GLYPH { F_5by5 {} }
rule GLYPH { G_5by5 {} }
rule GLYPH { H_5by5 {} }
rule GLYPH { I_5by5 {} }
rule GLYPH { J_5by5 {} }
rule GLYPH { K_5by5 {} }
rule GLYPH { L_5by5 {} }
rule GLYPH { M_5by5 {} }
rule GLYPH { N_5by5 {} }
rule GLYPH { O_5by5 {} }
rule GLYPH { P_5by5 {} }
rule GLYPH { Q_5by5 {} }
rule GLYPH { R_5by5 {} }
rule GLYPH { S_5by5 {} }
rule GLYPH { T_5by5 {} }
rule GLYPH { U_5by5 {} }
rule GLYPH { V_5by5 {} }
rule GLYPH { W_5by5 {} }
rule GLYPH { X_5by5 {} }
rule GLYPH { Y_5by5 {} }
rule GLYPH { Z_5by5 {} }

Gray Matter

I wanted to make something that looked like neurons, and found that if I didn't vary the brightness, the result looked like a big black blob. This one requires the version 2.0 looping feature.



(download)

Code: Select all

startshape NEURON;

rule NEURON
{
  CIRCLE { s 3 }

  MED_CURVE_LEFT { r 90 }
  MED_CURVE_RIGHT [ r 101 y 9.94981 r 9 ]
  NEURON [ r 101 y 9.94981 r -2 y 9.94981 r 109 s 0.85 b 0.05 ]

  HARD_CURVE_LEFT { r 180 }
  HARD_CURVE_RIGHT [ r 211.5 y 9.55039 r 28.5 ]
  NEURON [ r 211.5 y 9.55039 r -3 y 9.55039 r 128.5 s 0.85 b 0.05 ]
}

rule NEURON
{
  CIRCLE { s 3 }

  HARD_CURVE_RIGHT { }
  MED_CURVE_LEFT [ r -31.5 y 9.55039 r -28.5 ]
  SOFT_CURVE_RIGHT [ r -31.5 y 9.55039 r -17.5 y 9.94981 r 9 ]
  NEURON [ r -31.5 y 9.55039 r -17.5 y 9.94981 r 3.5 y 9.98744 r -154.5 s 0.85 b 0.05 ]

  SOFT_CURVE_LEFT [ r -132 ]
  SOFT_CURVE_LEFT [ r -126.5 y 9.98744 r 4.5 ]
  SOFT_CURVE_RIGHT [ r -126.5 y 9.98744 r 10 y 9.98744 r 4.5 ]
  NEURON [ r -126.5 y 9.98744 r 10 y 9.98744 r -1 y 9.98744 r -154.5 s 0.85 b 0.05 ]

  HARD_CURVE_LEFT [ r 100 ]
  HARD_CURVE_LEFT [ r 131.5 y 9.55039 r 28.5 ]
  MED_CURVE_RIGHT [ r 131.5 y 9.55039 r 60 y 9.55039 r 28.5 ]
  HARD_CURVE_RIGHT [ r 131.5 y 9.55039 r 60 y 9.55039 r 17.5 y 9.94981 r -9 ]
  NEURON [ r 131.5 y 9.55039 r 60 y 9.55039 r 17.5 y 9.94981 r -40.5 y 9.55039 r -158.5 s 0.85 b 0.05 ]
}

rule NEURON
{
  CIRCLE { s 3 }

  MED_CURVE_LEFT [ r 75 ]
  HARD_CURVE_RIGHT [ r 86 y 9.94981 r 9 ]
  NEURON [ r 86 y 9.94981 r -22.5 y 9.55039 r -158.5 s 0.85 b 0.05 ]

  MED_CURVE_RIGHT [ r 160 ]
  HARD_CURVE_LEFT [ r 149 y 9.94981 r -9 ]
  HARD_CURVE_RIGHT [ r 149 y 9.94981 r 22.5 y 9.55039 r 28.5 ]
  NEURON [ r 149 y 9.94981 r 22.5 y 9.55039 r -3 y 9.55039 r -158.5 s 0.85 b 0.05 ]

  HARD_CURVE_LEFT [ r -160 ]
  HARD_CURVE_RIGHT [ r -128.5 y 9.55039 r 28.5 ]
  NEURON [ r -128.5 y 9.55039 r -3 y 9.55039 r -158.5 s 0.85 b 0.05 ]
}

rule NEURON 2 { CIRCLE { s 3 } CIRCLE { s 2 b 1 } }

rule SOFT_CURVE_LEFT
{
  // after last block, offset is:
  //  r 5.5 y 9.98744 r 4.5
  10*[r 1 y 1] SQUARE { }
}

rule MED_CURVE_LEFT
{
  // after last block, offset is:
  //  r 11 y 9.94981 r 9
  10*[r 2 y 1] SQUARE { }
}

rule HARD_CURVE_LEFT
{
  // after last block, offset is:
  //  r 31.5 y 9.55039 r 28.5
  20*[r 3 y 0.5] SQUARE { }
}

rule SOFT_CURVE_RIGHT
{
  // after last block, offset is:
  //  r -5.5 y 9.98744 r -4.5
  10*[r -1 y 1] SQUARE { }
}

rule MED_CURVE_RIGHT
{
  // after last block, offset is:
  //  r -11 y 9.94981 r -9
  10*[r -2 y 1] SQUARE { }
}

rule HARD_CURVE_RIGHT
{
  // after last block, offset is:
  //  r -31.5 y 9.55039 r -28.5
  20*[r -3 y 0.5] SQUARE { }
}

I want to upload these to the gallery, but whenever I try, I get this:

Upload your artwork!

ERROR: exec() error: ERROR: exec() error: ERROR: exec() error: Sorry, couldn't insert design into DB.\n

[Ylee]

I got the same error today when uploading. In my case it seemed to be because I Was running Context Free with the same file open I was trying to upload. When i closed the file in CF i was able to load the code with no problem.

[logic]

I still get the error when I'm absolutely sure nothing has the file open.

[MtnViewJohn]

Maybe Chris could open-source the PHP code for the gallery and we could figure this out. At some point in the not too distant future I will integrate the gallery into the new Context Free site under the common login. You will be able to submit your designs directly from the CF client.

[chris]

Can you try again? Cool designs by the way.

There were 2 different problems with the upload page. One was all those exec errors which are just the results of a failed attempt to reduce color depth. (I had a permissions error after migrating directories.) The other was that if you put any apostraphes in a post it (duh) broke a line of code. I forgot to escape your notes. (It actually was a security mistake.)

-cc

[logic]

Can you try again? Cool designs by the way.

Thanks

Here is the output when I add items to the gallery:

Upload your artwork!
ERROR: exec() error: ERROR: exec() error: ERROR: exec() error:
Success!
You successfully uploaded Information Overload and we've rescaled the image to 3 different sizes.

They are actually added, though

There were 2 different problems with the upload page. One was all those exec errors which are just the results of a failed attempt to reduce color depth. (I had a permissions error after migrating directories.)

The forum here seems to have a similar problem with permissions with respect to avatars: uploads fail silently. I had to host my avatar on my own site to get it to work (and I had to manually build the URL to the phpbb-specific profile editor, since I couldn't find a link to it anywhere and the profile editor I could find a link to didn't offer the "link to an off-site avatar" option ).

By the way, why are you reducing the colour depth? It's already a palettized file, isn't it? Are the savings in size that great?

The other was that if you put any apostraphes in a post it (duh) broke a line of code. I forgot to escape your notes. (It actually was a security mistake.)

An alarmingly common error. Whenever I write database code, I make every effort to use structured parameters for everything -- is this an option with the framework you're using? (I've never used PHP myself, so...)

[chris]

I'm not sure about avatars here. John and Mark host the forum now, but it could be from copying my old images directory over (I just sent it to them a few days ago...maybe it's fixed now?)

The color depth was a quick hack because the images were huge -- often a few hundred K. I added the reductoin step back when they were all just black and white anyway. As soon as I get to it I'll spend some time figuring out the best way to compress them.

[logic]

The color depth was a quick hack because the images were huge -- often a few hundred K. I added the reductoin step back when they were all just black and white anyway. As soon as I get to it I'll spend some time figuring out the best way to compress them.

Well, a JPEG file will give the smallest file size, but it will also completely mangle high-saturation detail, especially reds and blues.

See:

http://israel.logiclrd.cx/jpeg/

(run your mouse along the bar at the top once it has finished loading to see various JPEG quality levels)

Note that even at maximum quality (1% compression), while black & white detail is fine, the 100% saturation coloured data is fuzzy and, in places, verging on unreadable.

Perhaps some sort of heuristic could be used, where JPEG is employed only if the user provided a JPEG file initially OR the maximum saturation of any pixel (or the 3rd greatest saturation or what have you) is below a certain threshold.

[MtnViewJohn]

I copied over the avatars from the original phpbb site and fixed the permissions on the avatar directory. Please try to upload your avatar again.