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1
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1 // tree-plot.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef __GNUG__ |
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25 #pragma implementation |
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26 #endif |
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27 |
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28 #include <iostream.h> |
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29 #include <fstream.h> |
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30 #include <strstream.h> |
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31 |
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32 #include "error.h" |
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33 #include "utils.h" |
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34 #include "tree.h" |
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35 |
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36 // The number of lines we\'ve plotted so far. |
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37 static int plot_line_count; |
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38 |
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39 // Is this a parametric plot? Makes a difference for 3D plotting. |
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40 int parametric_plot = 0; |
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41 |
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42 /* |
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43 * Plotting, eh? |
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44 */ |
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45 |
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46 tree_plot_command::tree_plot_command (void) |
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47 { |
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48 range = (tree_plot_limits *) NULL; |
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49 plot_list = (tree_subplot_list *) NULL; |
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50 ndim = 0; |
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51 } |
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52 |
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53 tree_plot_command::tree_plot_command (tree_subplot_list *plt, int nd) |
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54 { |
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55 range = (tree_plot_limits *) NULL; |
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56 plot_list = plt; |
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57 ndim = nd; |
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58 } |
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59 |
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60 tree_plot_command::tree_plot_command (tree_subplot_list *plt, |
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61 tree_plot_limits *rng, int nd) |
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62 { |
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63 range = rng; |
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64 plot_list = plt; |
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65 ndim = nd; |
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66 } |
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67 |
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68 tree_plot_command::~tree_plot_command (void) |
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69 { |
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70 delete range; |
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71 delete plot_list; |
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72 } |
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73 |
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74 tree_constant |
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75 tree_plot_command::eval (int print) |
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76 { |
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77 tree_constant retval; |
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78 |
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79 ostrstream plot_buf; |
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80 |
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81 switch (ndim) |
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82 { |
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83 case 2: |
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84 plot_buf << "plot"; |
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85 break; |
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86 case 3: |
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87 plot_buf << "splot"; |
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88 break; |
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89 default: |
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90 panic_impossible (); |
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91 break; |
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92 } |
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93 |
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94 if (range != (tree_plot_limits *) NULL) |
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95 range->print (ndim, plot_buf); |
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96 |
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97 plot_line_count = 0; |
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98 tree_subplot_list *ptr = plot_list; |
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99 for ( ; ptr != NULL_TREE ; ptr = ptr->next_elem ()) |
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100 { |
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101 plot_line_count++; |
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102 |
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103 if (ptr != plot_list) |
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104 plot_buf << ",\\\n "; |
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105 |
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106 int status = ptr->print (ndim, plot_buf); |
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107 if (status < 0) |
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108 return retval; |
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109 } |
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110 |
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111 // We need to make sure the buffer is null-terminated because it seems |
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112 // that the libg++-2.3 ostrstream::str() function doesn\'t guarantee |
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113 // that it will be... |
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114 |
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115 plot_buf << "\n" << ends; |
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116 |
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117 // Just testing... |
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118 // char *message = plot_buf.str (); |
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119 // cout << "[*]" << message << "[*]\n"; |
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120 |
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121 if (parametric_plot && ndim == 2) |
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122 { |
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123 warning ("can't make 2D parametric plot -- setting noparametric..."); |
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124 send_to_plot_stream ("set noparametric\n"); |
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125 char *message = plot_buf.str (); |
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126 send_to_plot_stream (message); |
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127 delete [] message; |
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128 send_to_plot_stream ("set parametric\n"); |
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129 } |
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130 else |
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131 { |
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132 char *message = plot_buf.str (); |
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133 send_to_plot_stream (message); |
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134 delete [] message; |
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135 } |
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136 |
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137 return retval; |
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138 } |
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139 |
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140 tree_subplot_list::tree_subplot_list (void) |
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141 { |
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142 plot_data = NULL_TREE; |
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143 using = (tree_subplot_using *) NULL; |
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144 title = NULL_TREE; |
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145 style = (tree_subplot_style *) NULL; |
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146 next = (tree_subplot_list *) NULL; |
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147 } |
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148 |
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149 tree_subplot_list::tree_subplot_list (tree *data) |
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150 { |
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151 plot_data = data; |
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152 using = (tree_subplot_using *) NULL; |
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153 title = NULL_TREE; |
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154 style = (tree_subplot_style *) NULL; |
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155 next = (tree_subplot_list *) NULL; |
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156 } |
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157 |
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158 tree_subplot_list::tree_subplot_list (tree_subplot_list *t) |
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159 { |
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160 plot_data = t->plot_data; |
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161 using = t->using; |
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162 title = t->title; |
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163 style = t->style; |
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164 next = t->next; |
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165 } |
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166 |
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167 tree_subplot_list::tree_subplot_list (tree_subplot_using *u, tree *t, |
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168 tree_subplot_style *s) |
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169 { |
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170 plot_data = NULL_TREE; |
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171 using = u; |
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172 title = t; |
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173 style = s; |
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174 next = (tree_subplot_list *) NULL; |
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175 } |
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176 |
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177 tree_subplot_list::~tree_subplot_list (void) |
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178 { |
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179 delete plot_data; |
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180 delete using; |
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181 delete title; |
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182 delete style; |
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183 delete next; |
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184 } |
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185 |
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186 tree_subplot_list * |
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187 tree_subplot_list::set_data (tree *data) |
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188 { |
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189 plot_data = data; |
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190 return this; |
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191 } |
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192 |
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193 tree_subplot_list * |
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194 tree_subplot_list::chain (tree_subplot_list *t) |
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195 { |
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196 tree_subplot_list *tmp = new tree_subplot_list (t); |
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197 tmp->next = this; |
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198 return tmp; |
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199 } |
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200 |
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201 tree_subplot_list * |
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202 tree_subplot_list::reverse (void) |
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203 { |
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204 tree_subplot_list *list = this; |
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205 tree_subplot_list *next; |
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206 tree_subplot_list *prev = (tree_subplot_list *) NULL; |
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207 |
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208 while (list != (tree_subplot_list *) NULL) |
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209 { |
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210 next = list->next; |
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211 list->next = prev; |
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212 prev = list; |
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213 list = next; |
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214 } |
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215 return prev; |
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216 } |
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217 |
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218 tree_subplot_list * |
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219 tree_subplot_list::next_elem (void) |
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220 { |
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221 return next; |
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222 } |
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223 |
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224 tree_constant |
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225 tree_subplot_list::eval (int print) |
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226 { |
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227 return plot_data->eval (0); |
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228 } |
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229 |
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230 int |
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231 tree_subplot_list::print (int ndim, ostrstream& plot_buf) |
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232 { |
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233 int nc = 0; |
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234 if (plot_data != NULL_TREE) |
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235 { |
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236 tree_constant data = plot_data->eval (0); |
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237 if (data.is_defined ()) |
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238 { |
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239 char *file = (char *) NULL; |
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240 if (data.is_string_type ()) |
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241 { |
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242 file = data.string_value (); |
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243 ifstream ftmp (file); |
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244 if (ftmp) |
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245 { |
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246 plot_buf << " \"" << file << '"'; |
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247 goto have_existing_file; |
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248 } |
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249 else |
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250 file = (char *) NULL; |
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251 } |
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252 |
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253 nc = data.columns (); |
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254 switch (ndim) |
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255 { |
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256 case 2: |
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257 file = save_in_tmp_file (data, ndim); |
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258 break; |
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259 case 3: |
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260 file = save_in_tmp_file (data, ndim, parametric_plot); |
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261 break; |
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262 default: |
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263 panic_impossible (); |
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264 break; |
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265 } |
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266 |
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267 if (file) |
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268 { |
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269 mark_for_deletion (file); |
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270 plot_buf << " \"" << file << '"'; |
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271 } |
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272 } |
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273 else |
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274 return -1; |
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275 } |
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276 else |
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277 return -1; |
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278 |
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279 have_existing_file: |
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280 |
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281 if (using != (tree_subplot_using *) NULL) |
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282 { |
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283 int status = using->print (ndim, nc, plot_buf); |
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284 if (status < 0) |
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285 return -1; |
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286 } |
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287 |
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288 if (title != NULL_TREE) |
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289 { |
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290 tree_constant tmp = title->eval (0); |
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291 if (tmp.is_string_type ()) |
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292 plot_buf << " title " << '"' << tmp.string_value () << '"'; |
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293 else |
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294 { |
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295 warning ("line title must be a string"); |
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296 plot_buf << " title " << '"' << "line " << plot_line_count << '"'; |
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297 } |
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298 } |
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299 else |
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300 plot_buf << " title " << '"' << "line " << plot_line_count << '"'; |
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301 |
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302 if (style != (tree_subplot_style *) NULL) |
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303 { |
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304 int status = style->print (plot_buf); |
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305 if (status < 0) |
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306 return -1; |
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307 } |
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308 |
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309 return 0; |
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310 } |
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311 |
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312 tree_plot_limits::tree_plot_limits (void) |
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313 { |
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314 x_range = (tree_plot_range *) NULL; |
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315 y_range = (tree_plot_range *) NULL; |
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316 z_range = (tree_plot_range *) NULL; |
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317 } |
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318 |
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319 tree_plot_limits::tree_plot_limits (tree_plot_range *xlim) |
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320 { |
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321 x_range = xlim; |
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322 y_range = (tree_plot_range *) NULL; |
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323 z_range = (tree_plot_range *) NULL; |
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324 } |
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325 |
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326 tree_plot_limits::tree_plot_limits (tree_plot_range *xlim, |
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327 tree_plot_range *ylim) |
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328 { |
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329 x_range = xlim; |
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330 y_range = ylim; |
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331 z_range = (tree_plot_range *) NULL; |
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332 } |
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333 |
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334 tree_plot_limits::tree_plot_limits (tree_plot_range *xlim, |
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335 tree_plot_range *ylim, |
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336 tree_plot_range *zlim) |
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337 { |
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338 x_range = xlim; |
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339 y_range = ylim; |
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340 z_range = zlim; |
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341 } |
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342 |
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343 tree_plot_limits::~tree_plot_limits (void) |
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344 { |
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345 delete x_range; |
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346 delete y_range; |
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347 delete z_range; |
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348 } |
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349 |
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350 tree_constant |
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351 tree_plot_limits::eval (int print) |
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352 { |
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353 tree_constant retval; |
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354 return retval; |
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355 } |
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356 |
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357 void |
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358 tree_plot_limits::print (int ndim, ostrstream& plot_buf) |
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359 { |
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360 if (ndim == 2 || ndim == 3) |
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361 { |
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362 if (x_range != (tree_plot_range *) NULL) |
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363 x_range->print (plot_buf); |
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364 else |
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365 return; |
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366 |
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367 if (y_range != (tree_plot_range *) NULL) |
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368 y_range->print (plot_buf); |
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369 else |
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370 return; |
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371 } |
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372 |
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373 if (ndim == 3 && z_range != (tree_plot_range *) NULL) |
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374 z_range->print (plot_buf); |
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375 } |
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376 |
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377 tree_plot_range::tree_plot_range (void) |
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378 { |
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379 lower = NULL_TREE; |
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380 upper = NULL_TREE; |
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381 } |
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382 |
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383 tree_plot_range::tree_plot_range (tree *l, tree *u) |
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384 { |
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385 lower = l; |
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386 upper = u; |
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387 } |
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388 |
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389 tree_plot_range::~tree_plot_range (void) |
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390 { |
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391 delete lower; |
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392 delete upper; |
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393 } |
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394 |
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395 tree_constant |
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396 tree_plot_range::eval (int print) |
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397 { |
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398 tree_constant retval; |
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399 return retval; |
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400 } |
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401 |
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402 void |
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403 tree_plot_range::print (ostrstream& plot_buf) |
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404 { |
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405 plot_buf << " ["; |
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406 |
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407 if (lower != NULL_TREE) |
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408 { |
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409 tree_constant lower_val = lower->eval (0); |
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410 double lo = lower_val.to_scalar (); |
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411 plot_buf << lo; |
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412 } |
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413 |
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414 plot_buf << ":"; |
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415 |
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416 if (upper != NULL_TREE) |
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417 { |
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418 tree_constant upper_val = upper->eval (0); |
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419 double hi = upper_val.to_scalar (); |
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420 plot_buf << hi; |
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421 } |
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422 |
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423 plot_buf << "]"; |
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424 } |
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425 |
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426 tree_subplot_using::tree_subplot_using (void) |
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427 { |
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428 qualifier_count = 0; |
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429 x[0] = NULL_TREE; |
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430 x[1] = NULL_TREE; |
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431 x[2] = NULL_TREE; |
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432 x[3] = NULL_TREE; |
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433 scanf_fmt = NULL_TREE; |
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434 } |
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435 |
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436 tree_subplot_using::tree_subplot_using (tree *fmt) |
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437 { |
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438 qualifier_count = 0; |
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439 x[0] = NULL_TREE; |
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440 x[1] = NULL_TREE; |
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441 x[2] = NULL_TREE; |
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442 x[3] = NULL_TREE; |
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443 scanf_fmt = fmt; |
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444 } |
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445 |
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446 tree_subplot_using::~tree_subplot_using (void) |
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447 { |
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448 delete scanf_fmt; |
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449 } |
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450 |
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451 tree_subplot_using * |
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452 tree_subplot_using::set_format (tree *fmt) |
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453 { |
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454 scanf_fmt = fmt; |
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455 return this; |
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456 } |
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457 |
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458 tree_subplot_using * |
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459 tree_subplot_using::add_qualifier (tree *t) |
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460 { |
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461 if (qualifier_count < 4) |
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462 x[qualifier_count] = t; |
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463 |
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464 qualifier_count++; |
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465 |
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466 return this; |
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467 } |
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468 |
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469 tree_constant |
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470 tree_subplot_using::eval (int print) |
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471 { |
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472 tree_constant retval; |
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473 return retval; |
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474 } |
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475 |
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476 int |
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477 tree_subplot_using::print (int ndim, int n_max, ostrstream& plot_buf) |
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478 { |
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479 if ((ndim == 2 && qualifier_count > 4) |
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480 || (ndim == 3 && qualifier_count > 3)) |
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481 return -1; |
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482 |
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483 for (int i = 0; i < qualifier_count; i++) |
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484 { |
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485 if (x[i] != NULL_TREE) |
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486 { |
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487 tree_constant tmp = x[i]->eval (0); |
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488 double val; |
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489 if (tmp.is_defined ()) |
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490 { |
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491 val = tmp.to_scalar (); |
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492 if (i == 0) |
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493 plot_buf << " using "; |
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494 else |
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495 plot_buf << ":"; |
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496 |
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497 int n = NINT (val); |
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498 |
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499 if (n > n_max || n < 1) |
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500 { |
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501 error ("using: column %d out of range", n); |
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502 return -1; |
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503 } |
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504 else |
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505 plot_buf << n; |
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506 } |
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507 else |
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508 return -1; |
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509 } |
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510 else |
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511 return -1; |
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512 } |
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513 |
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514 if (scanf_fmt != NULL_TREE) |
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515 warning ("ignoring scanf format in plot command"); |
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516 |
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517 return 0; |
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518 } |
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519 |
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520 tree_subplot_style::tree_subplot_style (void) |
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521 { |
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522 style = (char *) NULL; |
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523 linetype = NULL_TREE; |
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524 pointtype = NULL_TREE; |
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525 } |
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526 |
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527 tree_subplot_style::tree_subplot_style (char *s) |
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528 { |
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529 style = strsave (s); |
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530 linetype = NULL_TREE; |
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531 pointtype = NULL_TREE; |
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532 } |
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533 |
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534 tree_subplot_style::tree_subplot_style (char *s, tree *lt) |
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535 { |
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536 style = strsave (s); |
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537 linetype = lt; |
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538 pointtype = NULL_TREE; |
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539 } |
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540 |
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541 tree_subplot_style::tree_subplot_style (char *s, tree *lt, tree *pt) |
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542 { |
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543 style = strsave (s); |
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544 linetype = lt; |
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545 pointtype = pt; |
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546 } |
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547 |
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548 tree_subplot_style::~tree_subplot_style (void) |
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549 { |
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550 delete [] style; |
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551 delete linetype; |
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552 delete pointtype; |
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553 } |
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554 |
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555 tree_constant |
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556 tree_subplot_style::eval (int print) |
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557 { |
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558 tree_constant retval; |
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559 return retval; |
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560 } |
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561 |
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562 int |
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563 tree_subplot_style::print (ostrstream& plot_buf) |
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564 { |
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565 if (style != (char *) NULL) |
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566 { |
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567 plot_buf << " with " << style; |
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568 |
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569 if (linetype != NULL_TREE) |
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570 { |
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571 tree_constant tmp = linetype->eval (0); |
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572 if (tmp.is_defined ()) |
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573 { |
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574 double val = tmp.to_scalar (); |
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575 plot_buf << " " << NINT (val); |
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576 } |
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577 else |
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578 return -1; |
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579 } |
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580 |
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581 if (pointtype != NULL_TREE) |
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582 { |
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583 tree_constant tmp = pointtype->eval (0); |
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584 if (tmp.is_defined ()) |
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585 { |
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586 double val = tmp.to_scalar (); |
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587 plot_buf << " " << NINT (val); |
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588 } |
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589 else |
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590 return -1; |
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591 } |
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592 } |
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593 else |
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594 return -1; |
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595 |
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596 return 0; |
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597 } |
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598 |
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599 /* |
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600 ;;; Local Variables: *** |
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601 ;;; mode: C++ *** |
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602 ;;; page-delimiter: "^/\\*" *** |
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603 ;;; End: *** |
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604 */ |
