nethercote | 5912c81 | 2004-02-15 15:38:08 +0000 | [diff] [blame] | 1 | /* This file is part of hp2ps, a graph drawer for memory profiles. |
| 2 | Copyright (C) 2002 The University Court of the University of Glasgow. |
| 3 | This program is governed by the license contained in the file LICENSE. */ |
| 4 | |
nethercote | c9f3692 | 2004-02-14 16:40:02 +0000 | [diff] [blame] | 5 | #include <stdio.h> |
| 6 | #include <string.h> |
| 7 | #include "Main.h" |
| 8 | #include "Curves.h" |
| 9 | #include "Defines.h" |
| 10 | #include "Dimensions.h" |
| 11 | #include "HpFile.h" |
| 12 | #include "Utilities.h" |
| 13 | |
| 14 | /* own stuff */ |
| 15 | #include "Axes.h" |
| 16 | |
| 17 | typedef enum {MEGABYTE, KILOBYTE, BYTE} mkb; |
| 18 | |
| 19 | static void XAxis PROTO((void)); /* forward */ |
| 20 | static void YAxis PROTO((void)); /* forward */ |
| 21 | |
| 22 | static void XAxisMark PROTO((floatish, floatish)); /* forward */ |
| 23 | static void YAxisMark PROTO((floatish, floatish, mkb)); /* forward */ |
| 24 | |
| 25 | static floatish Round PROTO((floatish)); /* forward */ |
| 26 | |
| 27 | void |
| 28 | Axes() |
| 29 | { |
| 30 | XAxis(); |
| 31 | YAxis(); |
| 32 | } |
| 33 | |
| 34 | static void |
| 35 | XAxisMark(x, num) |
| 36 | floatish x; floatish num; |
| 37 | { |
| 38 | /* calibration mark */ |
| 39 | fprintf(psfp, "%f %f moveto\n", xpage(x), ypage(0.0)); |
| 40 | fprintf(psfp, "0 -4 rlineto\n"); |
| 41 | fprintf(psfp, "stroke\n"); |
| 42 | |
| 43 | /* number */ |
| 44 | fprintf(psfp, "HE%d setfont\n", NORMAL_FONT); |
| 45 | fprintf(psfp, "(%.1f)\n", num); |
| 46 | fprintf(psfp, "dup stringwidth pop\n"); |
| 47 | fprintf(psfp, "2 div\n"); |
| 48 | fprintf(psfp, "%f exch sub\n", xpage(x)); |
| 49 | fprintf(psfp, "%f moveto\n", borderspace); |
| 50 | fprintf(psfp, "show\n"); |
| 51 | } |
| 52 | |
| 53 | |
| 54 | #define N_X_MARKS 7 |
| 55 | #define XFUDGE 15 |
| 56 | |
| 57 | extern floatish xrange; |
| 58 | extern char *sampleunitstring; |
| 59 | |
| 60 | static void |
| 61 | XAxis() |
| 62 | { |
| 63 | floatish increment, i; |
| 64 | floatish t, x; |
| 65 | floatish legendlen; |
| 66 | |
| 67 | /* draw the x axis line */ |
| 68 | fprintf(psfp, "%f %f moveto\n", xpage(0.0), ypage(0.0)); |
| 69 | fprintf(psfp, "%f 0 rlineto\n", graphwidth); |
| 70 | fprintf(psfp, "%f setlinewidth\n", borderthick); |
| 71 | fprintf(psfp, "stroke\n"); |
| 72 | |
| 73 | /* draw x axis legend */ |
| 74 | fprintf(psfp, "HE%d setfont\n", NORMAL_FONT); |
| 75 | fprintf(psfp, "(%s)\n", sampleunitstring); |
| 76 | fprintf(psfp, "dup stringwidth pop\n"); |
| 77 | fprintf(psfp, "%f\n", xpage(0.0) + graphwidth); |
| 78 | fprintf(psfp, "exch sub\n"); |
| 79 | fprintf(psfp, "%f moveto\n", borderspace); |
| 80 | fprintf(psfp, "show\n"); |
| 81 | |
| 82 | |
| 83 | /* draw x axis scaling */ |
| 84 | |
| 85 | increment = Round(xrange / (floatish) N_X_MARKS); |
| 86 | |
| 87 | t = graphwidth / xrange; |
| 88 | legendlen = StringSize(sampleunitstring) + (floatish) XFUDGE; |
| 89 | |
| 90 | for (i = samplemap[0]; i < samplemap[nsamples - 1]; i += increment) { |
| 91 | x = (i - samplemap[0]) * t; |
| 92 | |
| 93 | if (x < (graphwidth - legendlen)) { |
| 94 | XAxisMark(x,i); |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | static void |
| 100 | YAxisMark(y, num, unit) |
| 101 | floatish y; floatish num; mkb unit; |
| 102 | { |
| 103 | /* calibration mark */ |
| 104 | fprintf(psfp, "%f %f moveto\n", xpage(0.0), ypage(y)); |
| 105 | fprintf(psfp, "-4 0 rlineto\n"); |
| 106 | fprintf(psfp, "stroke\n"); |
| 107 | |
| 108 | /* number */ |
| 109 | fprintf(psfp, "HE%d setfont\n", NORMAL_FONT); |
| 110 | |
| 111 | switch (unit) { |
| 112 | case MEGABYTE : |
| 113 | fprintf(psfp, "("); |
| 114 | CommaPrint(psfp, (intish) (num / 1e6 + 0.5)); |
| 115 | fprintf(psfp, "M)\n"); |
| 116 | break; |
| 117 | case KILOBYTE : |
| 118 | fprintf(psfp, "("); |
| 119 | CommaPrint(psfp, (intish) (num / 1e3 + 0.5)); |
| 120 | fprintf(psfp, "k)\n"); |
| 121 | break; |
| 122 | case BYTE: |
| 123 | fprintf(psfp, "("); |
| 124 | CommaPrint(psfp, (intish) (num + 0.5)); |
| 125 | fprintf(psfp, ")\n"); |
| 126 | break; |
| 127 | } |
| 128 | |
| 129 | fprintf(psfp, "dup stringwidth\n"); |
| 130 | fprintf(psfp, "2 div\n"); |
| 131 | fprintf(psfp, "%f exch sub\n", ypage(y)); |
| 132 | |
| 133 | fprintf(psfp, "exch\n"); |
| 134 | fprintf(psfp, "%f exch sub\n", graphx0 - borderspace); |
| 135 | |
| 136 | fprintf(psfp, "exch\n"); |
| 137 | fprintf(psfp, "moveto\n"); |
| 138 | fprintf(psfp, "show\n"); |
| 139 | } |
| 140 | |
| 141 | #define N_Y_MARKS 7 |
| 142 | #define YFUDGE 15 |
| 143 | |
| 144 | extern floatish yrange; |
| 145 | extern char *valueunitstring; |
| 146 | |
| 147 | static void |
| 148 | YAxis() |
| 149 | { |
| 150 | floatish increment, i; |
| 151 | floatish t, y; |
| 152 | floatish legendlen; |
| 153 | mkb unit; |
| 154 | |
| 155 | /* draw the y axis line */ |
| 156 | fprintf(psfp, "%f %f moveto\n", xpage(0.0), ypage(0.0)); |
| 157 | fprintf(psfp, "0 %f rlineto\n", graphheight); |
| 158 | fprintf(psfp, "%f setlinewidth\n", borderthick); |
| 159 | fprintf(psfp, "stroke\n"); |
| 160 | |
| 161 | /* draw y axis legend */ |
| 162 | fprintf(psfp, "gsave\n"); |
| 163 | fprintf(psfp, "HE%d setfont\n", NORMAL_FONT); |
| 164 | fprintf(psfp, "(%s)\n", valueunitstring); |
| 165 | fprintf(psfp, "dup stringwidth pop\n"); |
| 166 | fprintf(psfp, "%f\n", ypage(0.0) + graphheight); |
| 167 | fprintf(psfp, "exch sub\n"); |
| 168 | fprintf(psfp, "%f exch\n", xpage(0.0) - borderspace); |
| 169 | fprintf(psfp, "translate\n"); |
| 170 | fprintf(psfp, "90 rotate\n"); |
| 171 | fprintf(psfp, "0 0 moveto\n"); |
| 172 | fprintf(psfp, "show\n"); |
| 173 | fprintf(psfp, "grestore\n"); |
| 174 | |
| 175 | /* draw y axis scaling */ |
| 176 | increment = max( yrange / (floatish) N_Y_MARKS, 1.0); |
| 177 | increment = Round(increment); |
| 178 | |
| 179 | if (increment >= 1e6) { |
| 180 | unit = MEGABYTE; |
| 181 | } else if (increment >= 1e3) { |
| 182 | unit = KILOBYTE; |
| 183 | } else { |
| 184 | unit = BYTE; |
| 185 | } |
| 186 | |
| 187 | t = graphheight / yrange; |
| 188 | legendlen = StringSize(valueunitstring) + (floatish) YFUDGE; |
| 189 | |
| 190 | for (i = 0.0; i <= yrange; i += increment) { |
| 191 | y = i * t; |
| 192 | |
| 193 | if (y < (graphheight - legendlen)) { |
| 194 | YAxisMark(y, i, unit); |
| 195 | } |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | |
| 200 | /* |
| 201 | * Find a "nice round" value to use on the axis. |
| 202 | */ |
| 203 | |
| 204 | static floatish OneTwoFive PROTO((floatish)); /* forward */ |
| 205 | |
| 206 | static floatish |
| 207 | Round(y) |
| 208 | floatish y; |
| 209 | { |
| 210 | int i; |
| 211 | |
| 212 | if (y > 10.0) { |
| 213 | for (i = 0; y > 10.0; y /= 10.0, i++) ; |
| 214 | y = OneTwoFive(y); |
| 215 | for ( ; i > 0; y = y * 10.0, i--) ; |
| 216 | |
| 217 | } else if (y < 1.0) { |
| 218 | for (i = 0; y < 1.0; y *= 10.0, i++) ; |
| 219 | y = OneTwoFive(y); |
| 220 | for ( ; i > 0; y = y / 10.0, i--) ; |
| 221 | |
| 222 | } else { |
| 223 | y = OneTwoFive(y); |
| 224 | } |
| 225 | |
| 226 | return (y); |
| 227 | } |
| 228 | |
| 229 | |
| 230 | /* |
| 231 | * OneTwoFive() -- Runciman's 1,2,5 scaling rule. Argument 1.0 <= y <= 10.0. |
| 232 | */ |
| 233 | |
| 234 | static floatish |
| 235 | OneTwoFive(y) |
| 236 | floatish y; |
| 237 | { |
| 238 | if (y > 4.0) { |
| 239 | return (5.0); |
| 240 | } else if (y > 1.0) { |
| 241 | return (2.0); |
| 242 | } else { |
| 243 | return (1.0); |
| 244 | } |
| 245 | } |