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- NNNNAAAAMMMMEEEE
- mandel - calculate and graphically display a Mandelbrot set
-
- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- _m_a_n_d_e_l [-Lps][-W width][-H height][-o filename][-a _n ] [-b _n
- ] [-w _n ] [-h _n ] [-M _n ] [-R _p ] [-S _n ] [-T _n ]
- [-D _r ] [-r _n ] [-O _n ] [-c _n ] [-x x_center] [-y
- y_center]
-
- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- _m_a_n_d_e_l generates and graphically displays a Mandelbrot set
- according to the parameters and window specified.
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- OOOOPPPPTTTTIIIIOOOONNNNSSSS
- -D _n Specifies the delta within which an iterate must
- fall in order to be considered as having "returned"
- to a previous point in periodic orbit detection.
- Default value is 0.01.
-
- -H _n Specifies the height of the window. Default is 512.
-
- -M _n Specifies the escape detection radius. The default
- value is 100.
-
- -O _n Specifies the minimum color index to be used for
- iteration counts.
-
- -S Indicates to not look for periodic cycles (default
- action).
-
- -T Indicates to look for periodic cycles within the
- Mandelbrot set.
-
- -W _n Specifies the width of the window. Default is 512.
-
- -a _r Specifies the real value to use as the minimum
- parameter value of the horizontal axis. Default is
- -1.5.
-
- -b _n Specifies the real value to use as the minimum
- parameter value of the vertical axis. Default is
- -1.5.
-
- -c _n Selects one of twelve different color wheels to use.
- The default color wheel is a rainbow palette.
-
- -h _r Specifies the real value to be used as the range
- over which the vertical parameter values vary. The
- default is 3.0.
-
- -o _f_i_l_e_n_a_m_e
- Specifies the output filename to be used. If the -o
-
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- Page 1 (printed 3/9/94)
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-
-
- option is given, this file will automatically be
- written out at the completion of the drawing. If it
- is not specified, a default filename of mandel.out
- is used and only written if the 'f' or 'F' keys are
- pressed during a run. The format of the output file
- is PPM for color and PGM for monochrom. The
- parameters used to calculate the picture are
- included as comments at the beginning of the output
- file.
-
- -p Switches color indices for negative and positive
- iteration counts. Generally, causes negative
- iteration counts to be displayed in more detail
- while darkening and narrowing the color range for
- positive iteration counts. This can be toggled
- during runtime by pressing the 'p' key.
-
- -r _n Specifies the maximum rgb value to be used. Default
- is 35000.
-
- -u Produces a usage message.
-
- -v Prints out the various values to be used and exits.
-
- -w _r Specifies the real value to be used as the range
- over which the horizontal parameter values vary. The
- default is 3.0.
-
- -x _n Specifies the center x value of the window in the
- Complex plane. Default is -0.75.
-
- -y _n Specifies the center y value of the window in the
- Complex plane. Default is 0.0.
-
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- NNNNOOOOTTTTEEEESSSS
- During display, pressing the left mouse button allows you to
- select the area to be investigated with the mouse. The upper
- left hand corner of the desired area is the location of the
- cursor when the button is pressed. The lower right hand
- corner is specified by the cursor when the button is
- released. Pressing and releasing the middle mouse button
- will cause the Julia set corresponding to the parameter
- value at the crosshairs of the cursor to be displayed. See
- julia(LOCAL) for information on run-time interactivity with
- the julia program.
-
-
- Use of the keys _b_B_e_E_f_F_k_K_j_J_m_n_r_R_s_S_w_W_x_X_q_Q indicates:
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- (<) Halve the maximum iteration limit.
-
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- Page 2 (printed 3/9/94)
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- (>) Double the maximum iteration limit.
- (-) Halve the escape detection radius.
- (+) Double the escape detection radius.
- (0) Zoom out doubling the window on the Complex plane.
- (9) Zoom into the center quarter of the window on the
- Complex plane.
- (E or e) Recalculate the indices into the color wheel
- using a different method
- (F or f) Save current screen to ouput file (not yet
- implemented)
- (H or h or ?) Display brief help message
- (i) Decrement the interval between stripes for the
- striped color map.
- (I) Increment the interval between stripes for the
- striped color map.
- (P or p) Toggle positive/negative iteration count
- display.
- (r) Redraw the window using previously calculated
- iteration counts.
- (R) Redraw the window using the newly set parameter and
- window values.
- (s) Spin the color wheel in one direction
- (t) Spin the color wheel in the other direction
- (S or T) Stop spinning of the color wheel
- (u) Go up to the window just prior to the most recent
- zoom.
- (U) Go all the way up to the original window.
- (V or v) Display values of various parameters currently
- in use
- (W or w) Use next color map.
- (<ctrl>-W) Use color map in $HOME/.mandelmap
- (X or x) Clear window
- (Q or q) quit
-
-
-
- FFFFIIIILLLLEEEESSSS
- /usr/local/lib/mandel/colormaps/* - samples for use as
- $HOME/.mandelmap /usr/local/lib/mandel/params/* -
- scripts with interesting parameters
-
-
-
- AAAAUUUUTTTTHHHHOOOORRRR
- Ronald Joe Record
- 212 Owen Street
- Santa Cruz, CA 95062
- rr@sco.com
-
-
-
- AAAACCCCKKKKNNNNOOOOWWWWLLLLEEEEDDDDGGGGEEEEMMMMEEEENNNNTTTTSSSS
-
-
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- PPPPaaaaggggeeee 3333 ((((pppprrrriiiinnnntttteeeedddd 3333////9999////99994444))))
-
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- MMMMAAAANNNNDDDDEEEELLLL((((LLLLOOOOCCCCAAAALLLL)))) UUUUNNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV MMMMAAAANNNNDDDDEEEELLLL((((LLLLOOOOCCCCAAAALLLL))))
-
-
-
- Algorithms and coloring schemes were introduced to me in
- course work under Heinz Otto Peitgen and Dietmar Saupe at
- the University of California at Santa Cruz. Assistance with
- colormaps and spinning color wheels and X was gleaned from
- Hiram Clawson. Rubber banding code was adapted from an
- existing Mandelbrot program written by Stacey Campbell.
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- Page 4 (printed 3/9/94)
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