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exp-MandelbrotTGA.lisp
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exp-MandelbrotTGA.lisp
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;; -*- Mode:Lisp; Syntax:ANSI-Common-LISP; Coding:us-ascii-unix; fill-column:158 -*-
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;; @file exp-MandelbrotTGA.lisp
;; @author Mitch Richling <https://www.mitchr.me>
;; @brief Compute Mandelbrot set, and dump it to a TGA file using a nice pallet.@EOL
;; @std Common Lisp
;; @copyright
;; @parblock
;; Copyright (c) 2012,2015, Mitchell Jay Richling <https://www.mitchr.me> All rights reserved.
;;
;; Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
;;
;; 1. Redistributions of source code must retain the above copyright notice, this list of conditions, and the following disclaimer.
;;
;; 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions, and the following disclaimer in the documentation
;; and/or other materials provided with the distribution.
;;
;; 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software
;; without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
;; OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
;; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
;; DAMAGE.
;; @endparblock
;; @filedetails
;;
;; No complex arithmetic for performance. Nice pic.
;;
;; composite -compose Screen exp-MandelbrotTGA-OUT-1.tga exp-MandelbrotPot-OUT-RGB.tga mandPotTGAcompost-ART.tga
;;
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(declaim (optimize (speed 3) (safety 0) ( debug 0) (compilation-speed 0)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(loop with xmax fixnum = (expt 2 11)
with ymax fixnum = (expt 2 11)
for grd in '("0RMGY1CB0" "0RMGY1CB0" "0RMGY1CB0" "0RMGY1CB0" "0RMGY1CB0" "0RR0" )
for cf fixnum in '( 10 50 2 2 1 2 )
for x0 float in '( -2.2 -2.2 -0.70 -0.67 -0.642 -2.2 )
for x1 float in '( 0.8 0.8 -0.63 -0.63 -0.630 0.8 )
for y0 float in '( -1.5 -1.5 -0.50 -0.40 -0.394 -1.5 )
for y1 float in '( 1.5 1.5 -0.40 -0.37 -0.373 1.5 )
for i from 1
for cmax fixnum = (1- (mjr_colorized_ut-gradient-length grd)) ;; so we get potentially as many levels as we have colors
for fname = (format nil "exp-MandelbrotTGA-OUT-~d.tga" i)
do (format 't "~%Compute ~a~%" fname)
do (time (let ((daData (mjr_fsamp_dq-func-r123-r123 (lambda (cx cy)
(mod (* cf (loop with lcx short-float = (float cx 1.0e0)
with lcy short-float = (float cy 1.0e0)
for tz short-float = lcx then (+ (- (* zx zx) (* zy zy)) lcx)
for zy short-float = lcy then (+ (* 2 zx zy) lcy)
for zx short-float = tz
for ct fixnum from 1 upto cmax
count 1
while (and (< (+ (* zx zx) (* zy zy)) 4.0))))
cmax))
:xdat (list :start x0 :end x1 :len xmax)
:ydat (list :start y0 :end y1 :len ymax)
:f-color-meth grd :f-color-ano-typ :ano-typ-truvec)))
(mjr_tga_from-dquad fname daData))))