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- SSSSPPPPLLLLIIIINNNNEEEESSSS((((LLLLOOOOCCCCAAAALLLL)))) UUUUNNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV SSSSPPPPLLLLIIIINNNNEEEESSSS((((LLLLOOOOCCCCAAAALLLL))))
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- NNNNAAAAMMMMEEEE
- splines - displays bouncing balls used as control points for
- a spline curve
-
- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- _s_p_l_i_n_e_s [-abefrsuxBEFIRTW][-w width][-h height][-o
- filename][-m index][-c colorwheel][-n count][-N
- nballs][-l limit][-p nsteps][-D delay][-S
- naptime][-X xradius][-Y yradius]
-
- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- _s_p_l_i_n_e_s Randomly places the specified number of control
- points and sets each of them off on a randomly calculated
- linear trajectory. The balls bounce off of the walls and are
- used as control points for either a B-spline or Bezier
- spline curve.
-
- OOOOPPPPTTTTIIIIOOOONNNNSSSS
- -a selects display of control points only (no spline
- curve)
-
- -B Indicates use of the Bezier spline rather than the
- B-spline
-
- -b selects display of spline curve only (no control
- points)
-
- -c _n Selects one of many different color wheels to use.
- The default color wheel is a rainbow palette.
-
- -D _d_e_l_a_y
- Specifies the length of delay to use when spinning
- the color wheel
-
- -E Indicates to erase the previous control points as
- the new ones are drawn, displaying only the current
- control points
-
- -e Indicates to erase the previous curve as the new one
- is drawn, displaying only the current spline curve
-
- -F Indicates to use the full screen
-
- -f Indicates to not use fill mode, drawing control
- points as circles rather than disks
-
- -I Indicates use of the Infinite mode. There is no
- limit to the number of curves drawn
-
- -w _n Specifies the width of the window. Default is 512.
-
- -h _n Specifies the height of the window. Default is 512.
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- Page 1 (printed 7/3/94)
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- -l _n Specifies the number of successive curves to draw
- before starting a new sequence or exiting. Default
- is width x height.
-
- -m _n Specifies the minimum color index to be used for the
- upper end of the color wheel
-
- -n _n_u_m_p_i_c_s
- Specifies how many sequences of curves to compute
- before exiting. During display (see NOTES below),
- pressing 'n' or 'N' will skip to the next map.
-
- -N _n_b_a_l_l_s
- Specifies how many control points to simultaneously
- compute and display
-
- -o _f_i_l_e_n_a_m_e
- Specifies the output filename to be used. If the -o
- 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 splines.ppm
- is used and only written if the 'f' or 'F' keys are
- pressed during a run. The format of the output file
- is PPM. The parameters used to calculate the picture
- are included as comments at the beginning of the
- output file.
-
- -p _n_s_t_e_p_s
- Specifies how many steps to use in the spline curve
- computation. Default is 50
-
- -R Indicates the display will be in the root window. In
- this mode, the default color map will be used and
- no spinning of the color wheel is possible.
-
- -W Indicates the control points will perform a pseudo-
- random walk
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- -r Specifies random selection of modes and parameters
-
- -S /fInaptime
- Specifies the interval to delay between drawing
- curves
-
- -s Indicates to spin the color wheel immediately upon
- completion of display.
-
- -u Produces a usage message.
-
- -X _r_a_d_i_u_s
- Specifies the length of X-axis of the control
- points. Default is 5.
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- Page 2 (printed 7/3/94)
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- -x Indicates not to use XOR as drawing mode (no
- erasing)
-
- -Y _r_a_d_i_u_s
- Specifies the length of Y-axis of the control
- points. Default is 4.
-
- During display, use of the keys +-
- ><_b_B_c_C_d_D_e_E_f_F_g_G_i_I_k_K_L_n_N_p_P_r_R_s_S_w_W_x_X?_h_q_Q indicates:
-
- (>) Increment delay between curve drawings.
- (<) Decrement delay between curve drawings.
- (+) Increment minimum color index.
- (-) Decrement minimum color index.
- (b or B) Toggles use of Bezier and B-spline algorithms
- (c) Clears the window
- (C) Create another control point, preserving the
- existing ones.
- (d or D) Decrements or increments the delay used when
- spinning the color wheel
- (e or E) Erase the spline curve or control points as
- you go
- (f or F) Save the current window to a file in PPM
- format
- (g or G) Toggle drawing control points as circles or
- disks
- (i or I) Toggle checking for exceeding the limit on
- number of curves
- (k or K) Toggle display of control points or spline
- curves
- (L) Delete one of the control points
- (n or N) Skip to the next series of splines.
- (p or P) Decrement or increment the number of steps per
- spline curve
- (R) Toggle pseudo-random walk of control points
- (S) Stop spinning the color wheel
- (s) Spin the color wheel in the positive direction.
- (r) Spin the color wheel in the negative direction.
- (W or w) Increment or decrement the color map index.
- (x) Toggle drawing between XOR and COPY modes
- (X) Erase the existing control points and restart the
- computation and display
- (Q or q) quit
-
-
-
- AAAAUUUUTTTTHHHHOOOORRRR
- Ronald Joe Record
- The Santa Cruz Operation
- P.O. Box 1900
- Santa Cruz, CA 95061
- rr@sco.com
-
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- Page 3 (printed 7/3/94)
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- SSSSPPPPLLLLIIIINNNNEEEESSSS((((LLLLOOOOCCCCAAAALLLL)))) UUUUNNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV SSSSPPPPLLLLIIIINNNNEEEESSSS((((LLLLOOOOCCCCAAAALLLL))))
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- AAAACCCCKKKKNNNNOOOOWWWWLLLLEEEEDDDDGGGGEEEEMMMMEEEENNNNTTTTSSSS
- The original bouncing ball program was written by Gever
- Tulley in CGI. Assistance with colormaps and spinning color
- wheels and X was gleaned from Hiram Clawson and Stacey
- Campbell.
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- Page 4 (printed 7/3/94)
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