| … | |
… | |
| 82 | SizeY = ysize / 2 - 2; |
82 | SizeY = ysize / 2 - 2; |
| 83 | |
83 | |
| 84 | /* select random options if necessary */ |
84 | /* select random options if necessary */ |
| 85 | if (option == 0) |
85 | if (option == 0) |
| 86 | { |
86 | { |
| 87 | option = RANDOM () % MAX_SPIRAL_OPT; |
87 | option = rndm (MAX_SPIRAL_OPT); |
| 88 | } |
88 | } |
| 89 | |
89 | |
| 90 | /* the order in which these are evaluated matters */ |
90 | /* the order in which these are evaluated matters */ |
| 91 | |
91 | |
| 92 | /* the following two are mutually exclusive. |
92 | /* the following two are mutually exclusive. |
| 93 | pick one if they're both set. */ |
93 | pick one if they're both set. */ |
| 94 | if ((option & REGULAR_SPIRAL) && (option & FIT_SPIRAL)) |
94 | if ((option & REGULAR_SPIRAL) && (option & FIT_SPIRAL)) |
| 95 | { |
95 | { |
| 96 | /* unset REGULAR_SPIRAL half the time */ |
96 | /* unset REGULAR_SPIRAL half the time */ |
| 97 | if (RANDOM () % 2 && (option & REGULAR_SPIRAL)) |
97 | if (rndm (2) && (option & REGULAR_SPIRAL)) |
| 98 | option -= REGULAR_SPIRAL; |
98 | option -= REGULAR_SPIRAL; |
| 99 | else |
99 | else |
| 100 | option -= FIT_SPIRAL; |
100 | option -= FIT_SPIRAL; |
| 101 | } |
101 | } |
| 102 | |
102 | |
| 103 | xscale = yscale = MAX_FINE; /* fine spiral */ |
103 | xscale = yscale = MAX_FINE; /* fine spiral */ |
| 104 | |
104 | |
| 105 | /* choose the spiral pitch */ |
105 | /* choose the spiral pitch */ |
| 106 | if (!(option & FINE_SPIRAL)) |
106 | if (!(option & FINE_SPIRAL)) |
| 107 | { |
107 | { |
| 108 | float pitch = (RANDOM () % 5) / 10. + 10. / 22.; |
108 | float pitch = (rndm (5)) / 10. + 10. / 22.; |
| 109 | |
109 | |
| 110 | xscale = yscale = pitch; |
110 | xscale = yscale = pitch; |
| 111 | } |
111 | } |
| 112 | |
112 | |
| 113 | if ((option & FIT_SPIRAL) && (xsize != ysize)) |
113 | if ((option & FIT_SPIRAL) && (xsize != ysize)) |
