1 | ;+ |
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2 | ; |
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3 | ; @file_comments |
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4 | ; click on a map and find in which cell the click was |
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5 | ; |
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6 | ; @categories |
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7 | ; Grid |
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8 | ; |
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9 | ; @keyword CELLTYPE |
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10 | ; = 'T', 'W', 'U', 'V' or 'F' |
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11 | ; the type of point |
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12 | ; that is located in the center of the cell which the click is |
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13 | ; located. default is T type of cell (with corner defined by F |
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14 | ; points). |
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15 | ; |
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16 | ; @keyword DRAWCELL |
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17 | ; to draw the cell in which we clicked |
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18 | ; |
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19 | ; @keyword COLOR |
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20 | ; the color used to draw the cells (Clicking one more |
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21 | ; time in the same cell will draw the cell with the white color) |
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22 | ; |
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23 | ; @keyword ORIGINAL |
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24 | ; to get the position of the cell regarding the original |
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25 | ; grid (with no key_shift, ixminmesh, iyminmesh...) |
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26 | ; |
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27 | ; @keyword IJ |
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28 | ; see returns |
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29 | ; |
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30 | ; @keyword _EXTRA |
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31 | ; Used to pass extra keywords to <pro>inquad</pro> and |
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32 | ; <proidl>PLOT</proidl> |
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33 | ; (when /drawcell) |
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34 | ; |
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35 | ; @returns |
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36 | ; the index of the selected cells regarding to the grid which |
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37 | ; is in memory in the variable of the common. If /ij keyword is |
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38 | ; activated give 2D array (2, n) which are the i,j position of the |
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39 | ; n selected cells. |
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40 | ; |
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41 | ; @uses |
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42 | ; common.pro |
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43 | ; |
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44 | ; @examples |
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45 | ; IDL> res = clickincell() |
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46 | ; Click with the left button to select a cell. Clicking one more |
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47 | ; time in the same cell remove the cell from the selection. |
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48 | ; Click on the right button to quit. |
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49 | ; |
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50 | ; IDL> plt, findgen(jpi,jpj),/nodata,map=[90,0,0],/ortho |
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51 | ; IDL> print, clickincell(/draw,color=150,/xy) |
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52 | ; |
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53 | ; @history |
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54 | ; Sebastien Masson (smasson\@lodyc.jussieu.fr) |
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55 | ; August 2003 |
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56 | ; |
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57 | ; @version |
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58 | ; $Id$ |
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59 | ; |
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60 | ;- |
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61 | ; |
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62 | FUNCTION clickincell, CELLTYPE = celltype, DRAWCELL = drawcell, COLOR = color, ORIGINAL = original, IJ = ij, _EXTRA = extra |
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63 | ; |
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64 | compile_opt idl2, strictarrsubs |
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65 | ; |
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66 | @common |
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67 | ; |
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68 | ; initialization |
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69 | cellnum = -1L |
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70 | selected = 0 |
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71 | ; |
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72 | ; Cell list |
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73 | ; get the grid parameter according to celltype |
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74 | oldgrid = vargrid |
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75 | IF NOT keyword_set(celltype) THEN celltype = 'T' |
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76 | CASE strupcase(celltype) OF |
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77 | 'T':vargrid = 'F' |
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78 | 'W':vargrid = 'F' |
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79 | 'U':vargrid = 'V' |
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80 | 'V':vargrid = 'U' |
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81 | 'F':vargrid = 'T' |
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82 | ENDCASE |
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83 | grille, -1, glam, gphi, -1, nx, ny, nz, firstx, firsty, firstz, lastx, lasty, lastz |
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84 | vargrid = oldgrid |
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85 | ; define the corner of the cells in the clockwise direction |
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86 | IF keyword_set(key_periodic) AND nx EQ jpi THEN BEGIN |
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87 | x1 = glam[*, 0:ny-2] |
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88 | y1 = gphi[*, 0:ny-2] |
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89 | x2 = glam[*, 1:ny-1] |
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90 | y2 = gphi[*, 1:ny-1] |
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91 | x3 = shift(glam[*, 1:ny-1], -1, 0) |
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92 | y3 = shift(gphi[*, 1:ny-1], -1, 0) |
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93 | x4 = shift(glam[*, 0:ny-2], -1, 0) |
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94 | y4 = shift(gphi[*, 0:ny-2], -1, 0) |
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95 | ENDIF ELSE BEGIN |
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96 | x1 = glam[0:nx-2, 0:ny-2] |
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97 | y1 = gphi[0:nx-2, 0:ny-2] |
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98 | x2 = glam[0:nx-2, 1:ny-1] |
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99 | y2 = gphi[0:nx-2, 1:ny-1] |
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100 | x3 = glam[1:nx-1, 1:ny-1] |
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101 | y3 = gphi[1:nx-1, 1:ny-1] |
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102 | x4 = glam[1:nx-1, 0:ny-2] |
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103 | y4 = gphi[1:nx-1, 0:ny-2] |
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104 | ENDELSE |
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105 | glam = -1 ; free memory |
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106 | gphi = -1 ; free memory |
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107 | ; |
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108 | ; get mousse position on the reference map |
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109 | cursor, x, y, /data, /up |
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110 | ; |
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111 | while (!mouse.button ne 4) do BEGIN |
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112 | IF finite(x)*finite(x) EQ 0 THEN GOTO, outwhile |
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113 | ; |
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114 | case !mouse.button of |
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115 | 1:BEGIN |
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116 | ; What is the longitude? |
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117 | WHILE x GT !x.range[1] DO x = x-360 |
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118 | WHILE x LT !x.range[0] DO x = x+360 |
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119 | IF x GT !x.range[1] THEN GOTO, outwhile |
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120 | IF y GT !y.range[1] THEN GOTO, outwhile |
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121 | IF y LT !y.range[0] THEN GOTO, outwhile |
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122 | ; |
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123 | cell = inquad(x, y, x1, y1, x2, y2, x3, y3, x4, y4 $ |
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124 | , /onsphere, _extra = extra) |
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125 | ; |
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126 | IF cell[0] EQ -1 OR n_elements(cell) GT 1 THEN GOTO, outwhile |
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127 | cell = cell[0] |
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128 | already = (where(cellnum EQ cell))[0] |
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129 | IF already EQ -1 THEN BEGIN |
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130 | cellnum = [cellnum, cell] |
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131 | selected = [selected, 1] |
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132 | already = n_elements(selected)-1 |
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133 | ENDIF ELSE selected[already] = 1-selected[already] |
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134 | IF keyword_set(drawcell) THEN BEGIN |
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135 | oplot, [x1[cell], x2[cell], x3[cell], x4[cell], x1[cell]] $ |
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136 | , [y1[cell], y2[cell], y3[cell], y4[cell], y1[cell]] $ |
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137 | , color = color*selected[already] $ |
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138 | + (!d.n_colors < 255)*(1-selected[already]) $ |
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139 | , _extra = extra |
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140 | ENDIF |
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141 | END |
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142 | 2: ; middle button |
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143 | ELSE: |
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144 | ENDCASE |
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145 | ; get mousse position on the reference map |
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146 | outwhile: |
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147 | cursor, x, y, /data, /up |
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148 | ENDWHILE |
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149 | ; |
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150 | good = where(selected NE 0) |
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151 | IF good[0] EQ -1 THEN RETURN, -1 |
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152 | ; |
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153 | cellnum = cellnum[good] |
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154 | ; |
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155 | yy = cellnum/(nx-1+key_periodic*(nx EQ jpi)) |
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156 | xx = cellnum MOD (nx-1+key_periodic*(nx EQ jpi)) |
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157 | ; |
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158 | CASE strupcase(celltype) OF |
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159 | 'T':BEGIN |
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160 | xx = xx+firstx+1 |
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161 | yy = yy+firsty+1 |
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162 | END |
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163 | 'W':BEGIN |
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164 | xx = xx+firstx+1 |
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165 | yy = yy+firsty+1 |
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166 | END |
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167 | 'U':BEGIN |
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168 | xx = xx+firstx |
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169 | yy = yy+firsty+1 |
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170 | END |
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171 | 'V':BEGIN |
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172 | xx = xx+firstx+1 |
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173 | yy = yy+firsty |
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174 | END |
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175 | 'F':BEGIN |
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176 | xx = xx+firstx |
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177 | yy = yy+firsty |
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178 | END |
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179 | ENDCASE |
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180 | ; |
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181 | bad = where(xx GE jpi) |
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182 | IF bad[0] NE -1 THEN BEGIN |
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183 | xx[bad] = xx[bad]-jpi |
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184 | yy[bad] = yy[bad]+1 |
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185 | ENDIF |
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186 | bad = where(yy GE jpj) |
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187 | IF bad[0] NE -1 THEN stop |
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188 | ; |
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189 | IF keyword_set(original) THEN BEGIN |
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190 | xx = xx-key_shift |
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191 | bad = where(xx LT 0) |
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192 | IF bad[0] NE -1 THEN xx[bad] = xx[bad]+jpi |
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193 | xx = xx MOD jpi |
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194 | xx = xx +ixminmesh |
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195 | yy = yy+iyminmesh |
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196 | ENDIF |
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197 | ; |
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198 | ncell = n_elements(xx) |
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199 | IF keyword_set(ij) THEN $ |
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200 | RETURN, [reform(xx, 1, ncell, /over) $ |
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201 | , reform(yy, 1, ncell, /over)] |
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202 | ; |
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203 | IF keyword_set(original) THEN RETURN, xx+jpiglo*yy $ |
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204 | ELSE RETURN, xx+jpi*yy |
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205 | END |
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