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  1. <?xml version="1.0" encoding="utf-8" ?>
    2. 

  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    3. 

  3. <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
    4. 

  4. <head>
    5. 

  5. <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    6. 

  6. <title>Magick++ API: Geometry</title>
    7. 

  7. <link rel="stylesheet" href="magick.css" type="text/css" />
    8. 

  8. </head>
    9. 

  9. <body>
    10. 

  10. <div class="doc-section">
    11. 

  11. <h1 align="center">Magick::Geometry</h1>
    12. 

  12. <p>Geometry provides a convenient means to specify a geometry
    13. 

  13. argument. The object may be initialized from a C string or C++ string
    14. 

  14. containing a geometry specification. It may also be initialized by
    15. 

  15. more efficient parameterized constructors. 
    16. 

  16. </p>
    17. 

  17. <h3><a name="GeometrySpecifications"></a>Geometry
    18. 

  18. Specifications</h3>
    19. 

  19. <p>Geometry specifications are in the form
    20. 

  20. <kbd>&quot;&lt;width&gt;x&lt;height&gt;{+-}&lt;xoffset&gt;{+-}&lt;yoffset&gt;&quot;</kbd>
    21. 

  21. (where <i>width</i>, <i>height</i>, <i>xoffset</i>, and <i>yoffset</i>
    22. 

  22. are numbers) for specifying the size and placement location for an
    23. 

  23. object. 
    24. 

  24. </p>
    25. 

  25. <p style="margin-bottom: 0in">The <i>width</i> and <i>height</i>
    26. 

  26. parts of the geometry specification are measured in pixels. The
    27. 

  27. <i>xoffset</i> and <i>yoffset</i> parts are also measured in pixels
    28. 

  28. and are used to specify the distance of the placement coordinate from
    29. 

  29. the left and top and edges of the image, respectively. Both types of
    30. 

  30. offsets are measured from the indicated edge of the object to the
    31. 

  31. corresponding edge of the image. The X offset may be specified in the
    32. 

  32. following ways: 
    33. 

  33. </p>
    34. 

  34. 	<table width="90%" border="1" cellpadding="2" cellspacing="3">
    35. 

  35. 		<col width="21*" />
    36. 

  36. 		<col width="235*" />
    37. 

  37. 		<tr>
    38. 

  38. 			<td width="8%">
    39. 

  39. 				<p>+<i>xoffset</i></p>
    40. 

  40. 			</td>
    41. 

  41. 			<td width="92%">
    42. 

  42. 				<p>The left edge of the object is to be placed <i>xoffset</i>
    43. 

  43. 				pixels in from the <em>left edge </em>of the image.</p>
    44. 

  44. 			</td>
    45. 

  45. 		</tr>
    46. 

  46. 		<tr>
    47. 

  47. 			<td width="8%">
    48. 

  48. 				<p>-<i>xoffset</i></p>
    49. 

  49. 			</td>
    50. 

  50. 			<td width="92%">
    51. 

  51. 				<p>The left edge of the object is to be placed outside the image,
    52. 

  52. 				<i>xoffset</i> pixels out from the <em>left edge </em>of the image.</p>
    53. 

  53. 			</td>
    54. 

  54. 		</tr>
    55. 

  55. 	</table>
    56. 

  56. <p style="margin-bottom: 0in">The Y offset has similar meanings: 
    57. 

  57. </p>
    58. 

  58. 	<table width="90%" border="1" cellpadding="2" cellspacing="3">
    59. 

  59. 		<col width="27*" />
    60. 

  60. 		<col width="229*" />
    61. 

  61. 		<tr>
    62. 

  62. 			<td width="11%">
    63. 

  63. 				<p>+<i>yoffset</i></p>
    64. 

  64. 			</td>
    65. 

  65. 			<td width="89%">
    66. 

  66. 				<p>The top edge of the object is to be <i>yoffset</i> pixels
    67. 

  67. 				<em>below</em> the <em>top edge </em>of the image.</p>
    68. 

  68. 			</td>
    69. 

  69. 		</tr>
    70. 

  70. 		<tr>
    71. 

  71. 			<td width="11%">
    72. 

  72. 				<p>-<i>yoffset</i></p>
    73. 

  73. 			</td>
    74. 

  74. 			<td width="89%">
    75. 

  75. 				<p>The top edge of the object is to be <i>yoffset</i> pixels
    76. 

  76. 				<em>above</em> the <em>top edge</em> of the image.</p>
    77. 

  77. 			</td>
    78. 

  78. 		</tr>
    79. 

  79. 	</table>
    80. 

  80. <p>Offsets must be given as pairs; in other words, in order to
    81. 

  81. specify either <i>xoffset</i> or <i>yoffset</i> both must be present.
    82. 

  82. </p>
    83. 

  83. <h3><a name="ExtendedGeometrySpecifications"></a>ImageMagick
    84. 

  84. Extensions To Geometry Specifications</h3>
    85. 

  85. <p style="margin-bottom: 0in">ImageMagick has added a number of
    86. 

  86. qualifiers to the standard geometry string for use when resizing
    87. 

  87. images. The form of an extended geometry string is
    88. 

  88. &quot;<kbd>&lt;width&gt;x&lt;height&gt;{+-}&lt;xoffset&gt;{+-}&lt;yoffset&gt;{%}{!}{&lt;}{&gt;}&quot;</kbd>.
    89. 

  89. Extended geometry strings should <em>only</em> be used <em>when resizing
    90. 

  90. an image</em>. Using an extended geometry string for other
    91. 

  91. applications may cause the API call to fail. The available
    92. 

  92. qualifiers are shown in the following table: 
    93. 

  93. </p>
    94. 

  94. <p align="center" STYLE="margin-bottom: 0in"><b>ImageMagick Geometry
    95. 

  95. Qualifiers</b></p>
    96. 

  96. 	<table width="90%" border="1" cellpadding="2" cellspacing="3">
    97. 

  97. 		<col width="36*" />
    98. 

  98. 		<col width="220*" />
    99. 

  99. 		<tr>
    100. 

  100. 			<td width="14%">
    101. 

  101. 				<p align="center"><b>Qualifier</b></p>
    102. 

  102. 			</td>
    103. 

  103. 			<td width="86%">
    104. 

  104. 				<p align="center"><b>Description</b></p>
    105. 

  105. 			</td>
    106. 

  106. 		</tr>
    107. 

  107. 		<tr>
    108. 

  108. 			<td width="14%">
    109. 

  109. 				<p align="center"><b>%</b></p>
    110. 

  110. 			</td>
    111. 

  111. 			<td width="86%">
    112. 

  112. 				<p>Interpret width and height as a <b>percentage</b> of the
    113. 

  113. 				current size.</p>
    114. 

  114. 			</td>
    115. 

  115. 		</tr>
    116. 

  116. 		<tr>
    117. 

  117. 			<td width="14%">
    118. 

  118. 				<p align="center"><b>!</b></p>
    119. 

  119. 			</td>
    120. 

  120. 			<td width="86%">
    121. 

  121. 				<p>Resize to width and height <b>exactly</b>, loosing original
    122. 

  122. 				aspect ratio.</p>
    123. 

  123. 			</td>
    124. 

  124. 		</tr>
    125. 

  125. 		<tr>
    126. 

  126. 			<td width="14%">
    127. 

  127. 				<p align="center"><b>&lt;</b></p>
    128. 

  128. 			</td>
    129. 

  129. 			<td width="86%">
    130. 

  130. 				<p>Resize only if the image is <b>smaller</b> than the geometry
    131. 

  131. 				specification.</p>
    132. 

  132. 			</td>
    133. 

  133. 		</tr>
    134. 

  134. 		<tr>
    135. 

  135. 			<td width="14%">
    136. 

  136. 				<p align="center"><b>&gt;</b></p>
    137. 

  137. 			</td>
    138. 

  138. 			<td width="86%">
    139. 

  139. 				<p>Resize only if the image is <b>greater</b> than the geometry
    140. 

  140. 				specification.</p>
    141. 

  141. 			</td>
    142. 

  142. 		</tr>
    143. 

  143. 	</table>
    144. 

  144. <h3><a name="PostscriptPageSize"></a>Postscript Page Size Extension
    145. 

  145. To Geometry Specifications</h3>
    146. 

  146. <p>Any geometry string specification supplied to the Geometry
    147. 

  147. constructor is considered to be a Postscript page size nickname if
    148. 

  148. the first character is not numeric. The Geometry constructor converts
    149. 

  149. these page size specifications into the equivalent numeric geometry
    150. 

  150. string specification (preserving any offset component) prior to
    151. 

  151. conversion to the internal object format. Postscript page size
    152. 

  152. specifications are short-hand for the pixel geometry required to fill
    153. 

  153. a page of that size. Since the 11x17 inch page size used in the US
    154. 

  154. starts with a digit, it is not supported as a Postscript page size
    155. 

  155. nickname. Instead, substitute the geometry specification &quot;<kbd>792x1224&gt;&quot;</kbd>
    156. 

  156. when 11x17 output is desired. 
    157. 

  157. </p>
    158. 

  158. <p style="margin-bottom: 0in">An example of a Postscript page size
    159. 

  159. specification is <kbd>&quot;letter+43+43&gt;&quot;</kbd>. 
    160. 

  160. </p>
    161. 

  161. <p align="center" style="margin-bottom: 0in"><b>Postscript Page Size
    162. 

  162. Nicknames</b></p>
    163. 

  163. 	<table width="70%" border="1" cellpadding="2" cellspacing="3">
    164. 

  164. 		<col width="105*" />
    165. 

  165. 		<col width="151*" />
    166. 

  166. 		<tr>
    167. 

  167. 			<td width="41%">
    168. 

  168. 				<p align="center"><b>Postscript Page Size Nickname</b></p>
    169. 

  169. 			</td>
    170. 

  170. 			<td width="59%">
    171. 

  171. 				<p align="center"><b>Equivalent Extended Geometry Specification</b></p>
    172. 

  172. 			</td>
    173. 

  173. 		</tr>
    174. 

  174. 		<tr>
    175. 

  175. 			<td width="41%">
    176. 

  176. 				<p align="center"><font size="2">Ledger</font></p>
    177. 

  177. 			</td>
    178. 

  178. 			<td width="59%">
    179. 

  179. 				<p align="center"><font size="2">1224x792&gt;</font></p>
    180. 

  180. 			</td>
    181. 

  181. 		</tr>
    182. 

  182. 		<tr>
    183. 

  183. 			<td width="41%">
    184. 

  184. 				<p align="center"><font size="2">Legal</font></p>
    185. 

  185. 			</td>
    186. 

  186. 			<td width="59%">
    187. 

  187. 				<p align="center"><font size="2">612x1008&gt;</font></p>
    188. 

  188. 			</td>
    189. 

  189. 		</tr>
    190. 

  190. 		<tr>
    191. 

  191. 			<td width="41%">
    192. 

  192. 				<p align="center"><font size="2">Letter</font></p>
    193. 

  193. 			</td>
    194. 

  194. 			<td width="59%">
    195. 

  195. 				<p align="center"><font size="2">612x792&gt;</font></p>
    196. 

  196. 			</td>
    197. 

  197. 		</tr>
    198. 

  198. 		<tr>
    199. 

  199. 			<td width="41%">
    200. 

  200. 				<p align="center"><font size="2">LetterSmall</font></p>
    201. 

  201. 			</td>
    202. 

  202. 			<td width="59%">
    203. 

  203. 				<p align="center"><font size="2">612x792&gt;</font></p>
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  204. 			</td>
    205. 

  205. 		</tr>
    206. 

  206. 		<tr>
    207. 

  207. 			<td width="41%">
    208. 

  208. 				<p align="center"><font size="2">ArchE</font></p>
    209. 

  209. 			</td>
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  210. 			<td width="59%">
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  211. 				<p align="center"><font size="2">2592x3456&gt;</font></p>
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  212. 			</td>
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  213. 		</tr>
    214. 

  214. 		<tr>
    215. 

  215. 			<td width="41%">
    216. 

  216. 				<p align="center"><font size="2">ArchD</font></p>
    217. 

  217. 			</td>
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  218. 			<td width="59%">
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  219. 				<p align="center"><font size="2">1728x2592&gt;</font></p>
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  220. 			</td>
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  221. 		</tr>
    222. 

  222. 		<tr>
    223. 

  223. 			<td width="41%">
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  224. 				<p align="center"><font size="2">ArchC</font></p>
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  225. 			</td>
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  228. 			</td>
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  232. 				<p align="center"><font size="2">ArchB</font></p>
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  233. 			</td>
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  236. 			</td>
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  240. 				<p align="center"><font size="2">ArchA</font></p>
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  330. 			<td width="59%">
    331. 

  331. 				<p align="center"><font size="2">105x148&gt;</font></p>
    332. 

  332. 			</td>
    333. 

  333. 		</tr>
    334. 

  334. 		<tr>
    335. 

  335. 			<td width="41%">
    336. 

  336. 				<p align="center"><font size="2">A10</font></p>
    337. 

  337. 			</td>
    338. 

  338. 			<td width="59%">
    339. 

  339. 				<p align="center"><font size="2">74x105&gt;</font></p>
    340. 

  340. 			</td>
    341. 

  341. 		</tr>
    342. 

  342. 		<tr>
    343. 

  343. 			<td width="41%">
    344. 

  344. 				<p align="center"><font size="2">B0</font></p>
    345. 

  345. 			</td>
    346. 

  346. 			<td width="59%">
    347. 

  347. 				<p align="center"><font size="2">2836x4008&gt;</font></p>
    348. 

  348. 			</td>
    349. 

  349. 		</tr>
    350. 

  350. 		<tr>
    351. 

  351. 			<td width="41%">
    352. 

  352. 				<p align="center"><font size="2">B1</font></p>
    353. 

  353. 			</td>
    354. 

  354. 			<td width="59%">
    355. 

  355. 				<p align="center"><font size="2">2004x2836&gt;</font></p>
    356. 

  356. 			</td>
    357. 

  357. 		</tr>
    358. 

  358. 		<tr>
    359. 

  359. 			<td width="41%">
    360. 

  360. 				<p align="center"><font size="2">B2</font></p>
    361. 

  361. 			</td>
    362. 

  362. 			<td width="59%">
    363. 

  363. 				<p align="center"><font size="2">1418x2004&gt;</font></p>
    364. 

  364. 			</td>
    365. 

  365. 		</tr>
    366. 

  366. 		<tr>
    367. 

  367. 			<td width="41%">
    368. 

  368. 				<p align="center"><font size="2">B3</font></p>
    369. 

  369. 			</td>
    370. 

  370. 			<td width="59%">
    371. 

  371. 				<p align="center"><font size="2">1002x1418&gt;</font></p>
    372. 

  372. 			</td>
    373. 

  373. 		</tr>
    374. 

  374. 		<tr>
    375. 

  375. 			<td width="41%">
    376. 

  376. 				<p align="center"><font size="2">B4</font></p>
    377. 

  377. 			</td>
    378. 

  378. 			<td width="59%">
    379. 

  379. 				<p align="center"><font size="2">709x1002&gt;</font></p>
    380. 

  380. 			</td>
    381. 

  381. 		</tr>
    382. 

  382. 		<tr>
    383. 

  383. 			<td width="41%">
    384. 

  384. 				<p align="center"><font size="2">B5</font></p>
    385. 

  385. 			</td>
    386. 

  386. 			<td width="59%">
    387. 

  387. 				<p align="center"><font size="2">501x709&gt;</font></p>
    388. 

  388. 			</td>
    389. 

  389. 		</tr>
    390. 

  390. 		<tr>
    391. 

  391. 			<td width="41%">
    392. 

  392. 				<p align="center"><font size="2">C0</font></p>
    393. 

  393. 			</td>
    394. 

  394. 			<td width="59%">
    395. 

  395. 				<p align="center"><font size="2">2600x3677&gt;</font></p>
    396. 

  396. 			</td>
    397. 

  397. 		</tr>
    398. 

  398. 		<tr>
    399. 

  399. 			<td width="41%">
    400. 

  400. 				<p align="center"><font size="2">C1</font></p>
    401. 

  401. 			</td>
    402. 

  402. 			<td width="59%">
    403. 

  403. 				<p align="center"><font size="2">1837x2600&gt;</font></p>
    404. 

  404. 			</td>
    405. 

  405. 		</tr>
    406. 

  406. 		<tr>
    407. 

  407. 			<td width="41%">
    408. 

  408. 				<p align="center"><font size="2">C2</font></p>
    409. 

  409. 			</td>
    410. 

  410. 			<td width="59%">
    411. 

  411. 				<p align="center"><font size="2">1298x1837&gt;</font></p>
    412. 

  412. 			</td>
    413. 

  413. 		</tr>
    414. 

  414. 		<tr>
    415. 

  415. 			<td width="41%">
    416. 

  416. 				<p align="center"><font size="2">C3</font></p>
    417. 

  417. 			</td>
    418. 

  418. 			<td width="59%">
    419. 

  419. 				<p align="center"><font size="2">918x1298&gt;</font></p>
    420. 

  420. 			</td>
    421. 

  421. 		</tr>
    422. 

  422. 		<tr>
    423. 

  423. 			<td width="41%">
    424. 

  424. 				<p align="center"><font size="2">C4</font></p>
    425. 

  425. 			</td>
    426. 

  426. 			<td width="59%">
    427. 

  427. 				<p align="center"><font size="2">649x918&gt;</font></p>
    428. 

  428. 			</td>
    429. 

  429. 		</tr>
    430. 

  430. 		<tr>
    431. 

  431. 			<td width="41%">
    432. 

  432. 				<p align="center"><font size="2">C5</font></p>
    433. 

  433. 			</td>
    434. 

  434. 			<td width="59%">
    435. 

  435. 				<p align="center"><font size="2">459x649&gt;</font></p>
    436. 

  436. 			</td>
    437. 

  437. 		</tr>
    438. 

  438. 		<tr>
    439. 

  439. 			<td width="41%">
    440. 

  440. 				<p align="center"><font size="2">C6</font></p>
    441. 

  441. 			</td>
    442. 

  442. 			<td width="59%">
    443. 

  443. 				<p align="center"><font size="2">323x459&gt;</font></p>
    444. 

  444. 			</td>
    445. 

  445. 		</tr>
    446. 

  446. 		<tr>
    447. 

  447. 			<td width="41%">
    448. 

  448. 				<p align="center"><font size="2">Flsa</font></p>
    449. 

  449. 			</td>
    450. 

  450. 			<td width="59%">
    451. 

  451. 				<p align="center"><font size="2">612x936&gt;</font></p>
    452. 

  452. 			</td>
    453. 

  453. 		</tr>
    454. 

  454. 		<tr>
    455. 

  455. 			<td width="41%">
    456. 

  456. 				<p align="center"><font size="2">Flse</font></p>
    457. 

  457. 			</td>
    458. 

  458. 			<td width="59%">
    459. 

  459. 				<p align="center"><font size="2">612x936&gt;</font></p>
    460. 

  460. 			</td>
    461. 

  461. 		</tr>
    462. 

  462. 		<tr>
    463. 

  463. 			<td width="41%">
    464. 

  464. 				<p align="center"><font size="2">HalfLetter</font></p>
    465. 

  465. 			</td>
    466. 

  466. 			<td width="59%">
    467. 

  467. 				<p align="center"><font size="2">396x612&gt;</font></p>
    468. 

  468. 			</td>
    469. 

  469. 		</tr>
    470. 

  470. 	</table>
    471. 

  471. <H3 align="center">Geometry Methods</H3>
    472. 

  472. <p style="margin-bottom: 0in">Geometry provides methods to initialize
    473. 

  473. its value from strings, from a set of parameters, or via attributes.
    474. 

  474. The methods available for use in Geometry are shown in the following
    475. 

  475. table: 
    476. 

  476. </p>
    477. 

  477. <p align="center" style="margin-bottom: 0in"><b>Geometry Methods</b></p>
    478. 

  478. <table width="100%" border="1" cellpadding="2" cellspacing="3">
    479. 

  479. 	<col width="25*" />
    480. 

  480. 	<col width="26*" />
    481. 

  481. 	<col width="111*" />
    482. 

  482. 	<col width="94*" />
    483. 

  483. 	<tr>
    484. 

  484. 		<td width="10%">
    485. 

  485. 			<p align="center"><b>Method</b></p>
    486. 

  486. 		</td>
    487. 

  487. 		<td width="10%">
    488. 

  488. 			<p align="center"><b>Return Type</b></p>
    489. 

  489. 		</td>
    490. 

  490. 		<td width="44%">
    491. 

  491. 			<p align="center"><b>Signature(s)</b></p>
    492. 

  492. 		</td>
    493. 

  493. 		<td width="37%">
    494. 

  494. 			<p align="center"><b>Description</b></p>
    495. 

  495. 		</td>
    496. 

  496. 	</tr>
    497. 

  497. 	<tr>
    498. 

  498. 		<td rowspan="3" width="10%"> 
    499. 

  499. 			<p>Geometry</p>
    500. 

  500. 		</td>
    501. 

  501. 		<td rowspan="3" width="10%" bgcolor="#666666">
    502. 

  502. 			<p>&#160;</p>
    503. 

  503. 		</td>
    504. 

  504. 		<td width="44%">
    505. 

  505. 			<p>size_t width_, size_t height_, ssize_t xOff_ =
    506. 

  506. 			0, ssize_t yOff_ = 0, bool xNegative_ = false, bool
    507. 

  507. 			yNegative_ = false</p>
    508. 

  508. 		</td>
    509. 

  509. 		<td width="37%">
    510. 

  510. 			<p>Construct geometry via explicit parameters.</p>
    511. 

  511. 		</td>
    512. 

  512. 	</tr>
    513. 

  513. 	<tr>
    514. 

  514. 		<td width="44%">
    515. 

  515. 			<p>const string geometry_</p>
    516. 

  516. 		</td>
    517. 

  517. 		<td width="37%">
    518. 

  518. 			<p>Construct geometry from C++ string</p>
    519. 

  519. 		</td>
    520. 

  520. 	</tr>
    521. 

  521. 	<tr>
    522. 

  522. 		<td width="44%">
    523. 

  523. 			<p>const char * geometry_</p>
    524. 

  524. 		</td>
    525. 

  525. 		<td width="37%">
    526. 

  526. 			<p>Construct geometry from C string</p>
    527. 

  527. 		</td>
    528. 

  528. 	</tr>
    529. 

  529. 	<tr>
    530. 

  530. 		<td rowspan="2" width="10%">
    531. 

  531. 			<p>width</p>
    532. 

  532. 		</td>
    533. 

  533. 		<td width="10%">
    534. 

  534. 			<p>void</p>
    535. 

  535. 		</td>
    536. 

  536. 		<td width="44%">
    537. 

  537. 			<p>size_t width_</p>
    538. 

  538. 		</td>
    539. 

  539. 		<td rowspan="2" width="37%">
    540. 

  540. 			<p>Width</p>
    541. 

  541. 		</td>
    542. 

  542. 	</tr>
    543. 

  543. 	<tr>
    544. 

  544. 		<td width="10%">
    545. 

  545. 			<p>size_t</p>
    546. 

  546. 		</td>
    547. 

  547. 		<td width="44%">
    548. 

  548. 			<p>void</p>
    549. 

  549. 		</td>
    550. 

  550. 	</tr>
    551. 

  551. 	<tr>
    552. 

  552. 		<td rowspan="2" width="10%">
    553. 

  553. 			<p>height</p>
    554. 

  554. 		</td>
    555. 

  555. 		<td width="10%">
    556. 

  556. 			<p>void</p>
    557. 

  557. 		</td>
    558. 

  558. 		<td width="44%">
    559. 

  559. 			<p>size_t height_</p>
    560. 

  560. 		</td>
    561. 

  561. 		<td rowspan="2" width="37%">
    562. 

  562. 			<p>Height</p>
    563. 

  563. 		</td>
    564. 

  564. 	</tr>
    565. 

  565. 	<tr>
    566. 

  566. 		<td width="10%">
    567. 

  567. 			<p>size_t</p>
    568. 

  568. 		</td>
    569. 

  569. 		<td width="44%">
    570. 

  570. 			<p>void</p>
    571. 

  571. 		</td>
    572. 

  572. 	</tr>
    573. 

  573. 	<tr>
    574. 

  574. 		<td rowspan="2" width="10%">
    575. 

  575. 			<p>xOff</p>
    576. 

  576. 		</td>
    577. 

  577. 		<td width="10%">
    578. 

  578. 			<p>void</p>
    579. 

  579. 		</td>
    580. 

  580. 		<td width="44%">
    581. 

  581. 			<p>ssize_t xOff_</p>
    582. 

  582. 		</td>
    583. 

  583. 		<td rowspan="2" width="37%">
    584. 

  584. 			<p>X offset from origin</p>
    585. 

  585. 		</td>
    586. 

  586. 	</tr>
    587. 

  587. 	<tr>
    588. 

  588. 		<td width="10%">
    589. 

  589. 			<p>ssize_t</p>
    590. 

  590. 		</td>
    591. 

  591. 		<td width="44%">
    592. 

  592. 			<p>void</p>
    593. 

  593. 		</td>
    594. 

  594. 	</tr>
    595. 

  595. 	<tr>
    596. 

  596. 		<td rowspan="2" width="10%">
    597. 

  597. 			<p>yOff</p>
    598. 

  598. 		</td>
    599. 

  599. 		<td width="10%">
    600. 

  600. 			<p>void</p>
    601. 

  601. 		</td>
    602. 

  602. 		<td width="44%">
    603. 

  603. 			<p>ssize_t yOff_</p>
    604. 

  604. 		</td>
    605. 

  605. 		<td rowspan="2" width="37%">
    606. 

  606. 			<p>Y offset from origin</p>
    607. 

  607. 		</td>
    608. 

  608. 	</tr>
    609. 

  609. 	<tr>
    610. 

  610. 		<td width="10%">
    611. 

  611. 			<p>size_t</p>
    612. 

  612. 		</td>
    613. 

  613. 		<td width="44%">
    614. 

  614. 			<p>void</p>
    615. 

  615. 		</td>
    616. 

  616. 	</tr>
    617. 

  617. 	<tr>
    618. 

  618. 		<td rowspan="2" width="10%">
    619. 

  619. 			<p>xNegative</p>
    620. 

  620. 		</td>
    621. 

  621. 		<td width="10%">
    622. 

  622. 			<p>void</p>
    623. 

  623. 		</td>
    624. 

  624. 		<td width="44%">
    625. 

  625. 			<p>bool xNegative_</p>
    626. 

  626. 		</td>
    627. 

  627. 		<td rowspan="2" width="37%">
    628. 

  628. 			<p>Sign of X offset negative? (X origin at right)</p>
    629. 

  629. 		</td>
    630. 

  630. 	</tr>
    631. 

  631. 	<tr>
    632. 

  632. 		<td width="10%">
    633. 

  633. 			<p>bool</p>
    634. 

  634. 		</td>
    635. 

  635. 		<td width="44%">
    636. 

  636. 			<p>void</p>
    637. 

  637. 		</td>
    638. 

  638. 	</tr>
    639. 

  639. 	<tr>
    640. 

  640. 		<td rowspan="2" width="10%">
    641. 

  641. 			<p>yNegative</p>
    642. 

  642. 		</td>
    643. 

  643. 		<td width="10%">
    644. 

  644. 			<p>void</p>
    645. 

  645. 		</td>
    646. 

  646. 		<td width="44%">
    647. 

  647. 			<p>bool yNegative_</p>
    648. 

  648. 		</td>
    649. 

  649. 		<td rowspan="2" width="37%">
    650. 

  650. 			<p>Sign of Y offset negative? (Y origin at bottom)</p>
    651. 

  651. 		</td>
    652. 

  652. 	</tr>
    653. 

  653. 	<tr>
    654. 

  654. 		<td width="10%">
    655. 

  655. 			<p>bool</p>
    656. 

  656. 		</td>
    657. 

  657. 		<td width="44%">
    658. 

  658. 			<p>void</p>
    659. 

  659. 		</td>
    660. 

  660. 	</tr>
    661. 

  661. 	<tr>
    662. 

  662. 		<td rowspan="2" width="10%">
    663. 

  663. 			<p>percent</p>
    664. 

  664. 		</td>
    665. 

  665. 		<td width="10%">
    666. 

  666. 			<p>void</p>
    667. 

  667. 		</td>
    668. 

  668. 		<td width="44%">
    669. 

  669. 			<p>bool percent_</p>
    670. 

  670. 		</td>
    671. 

  671. 		<td rowspan="2" width="37%">
    672. 

  672. 			<p>Width and height are expressed as percentages</p>
    673. 

  673. 		</td>
    674. 

  674. 	</tr>
    675. 

  675. 	<tr>
    676. 

  676. 		<td width="10%">
    677. 

  677. 			<p>bool</p>
    678. 

  678. 		</td>
    679. 

  679. 		<td width="44%">
    680. 

  680. 			<p>void</p>
    681. 

  681. 		</td>
    682. 

  682. 	</tr>
    683. 

  683. 	<tr>
    684. 

  684. 		<td rowspan="2" width="10%">
    685. 

  685. 			<p>aspect</p>
    686. 

  686. 		</td>
    687. 

  687. 		<td width="10%">
    688. 

  688. 			<p>void</p>
    689. 

  689. 		</td>
    690. 

  690. 		<td width="44%">
    691. 

  691. 			<p>bool aspect_</p>
    692. 

  692. 		</td>
    693. 

  693. 		<td rowspan="2" width="37%">
    694. 

  694. 			<p>Resize without preserving aspect ratio (!)</p>
    695. 

  695. 		</td>
    696. 

  696. 	</tr>
    697. 

  697. 	<tr>
    698. 

  698. 		<td width="10%">
    699. 

  699. 			<p>bool</p>
    700. 

  700. 		</td>
    701. 

  701. 		<td width="44%">
    702. 

  702. 			<p>void</p>
    703. 

  703. 		</td>
    704. 

  704. 	</tr>
    705. 

  705. 	<tr>
    706. 

  706. 		<td rowspan="2" width="10%">
    707. 

  707. 			<p>greater</p>
    708. 

  708. 		</td>
    709. 

  709. 		<td width="10%">
    710. 

  710. 			<p>void</p>
    711. 

  711. 		</td>
    712. 

  712. 		<td width="44%">
    713. 

  713. 			<p>bool greater_</p>
    714. 

  714. 		</td>
    715. 

  715. 		<td rowspan="2" width="37%">
    716. 

  716. 			<p>Resize if image is greater than size (&gt;)</p>
    717. 

  717. 		</td>
    718. 

  718. 	</tr>
    719. 

  719. 	<tr>
    720. 

  720. 		<td width="10%">
    721. 

  721. 			<p>bool</p>
    722. 

  722. 		</td>
    723. 

  723. 		<td width="44%">
    724. 

  724. 			<p>void</p>
    725. 

  725. 		</td>
    726. 

  726. 	</tr>
    727. 

  727. 	<tr>
    728. 

  728. 		<td rowspan="2" width="10%">
    729. 

  729. 			<p>less</p>
    730. 

  730. 		</td>
    731. 

  731. 		<td width="10%">
    732. 

  732. 			<p>void</p>
    733. 

  733. 		</td>
    734. 

  734. 		<td width="44%">
    735. 

  735. 			<p>bool less_</p>
    736. 

  736. 		</td>
    737. 

  737. 		<td rowspan="2" width="37%">
    738. 

  738. 			<p>Resize if image is less than size (&lt;)</p>
    739. 

  739. 		</td>
    740. 

  740. 	</tr>
    741. 

  741. 	<tr>
    742. 

  742. 		<td width="10%">
    743. 

  743. 			<p>bool</p>
    744. 

  744. 		</td>
    745. 

  745. 		<td width="44%">
    746. 

  746. 			<p>void</p>
    747. 

  747. 		</td>
    748. 

  748. 	</tr>
    749. 

  749. 	<tr>
    750. 

  750. 		<td rowspan="2" width="10%">
    751. 

  751. 			<p>isValid</p>
    752. 

  752. 		</td>
    753. 

  753. 		<td width="10%">
    754. 

  754. 			<p>void</p>
    755. 

  755. 		</td>
    756. 

  756. 		<td width="44%">
    757. 

  757. 			<p>bool isValid_</p>
    758. 

  758. 		</td>
    759. 

  759. 		<td rowspan="2" width="37%">
    760. 

  760. 			<p>Does object contain a valid geometry? May be set to <i>false</i>
    761. 

  761. 			in order to invalidate an existing geometry object.</p>
    762. 

  762. 		</td>
    763. 

  763. 	</tr>
    764. 

  764. 	<tr>
    765. 

  765. 		<td width="10%">
    766. 

  766. 			<p>bool</p>
    767. 

  767. 		</td>
    768. 

  768. 		<td width="44%">
    769. 

  769. 			<p>void</p>
    770. 

  770. 		</td>
    771. 

  771. 	</tr>
    772. 

  772. 	<tr>
    773. 

  773. 		<td width="10%">
    774. 

  774. 			<p>operator =</p>
    775. 

  775. 		</td>
    776. 

  776. 		<td width="10%">
    777. 

  777. 			<p>const Geometry&amp;</p>
    778. 

  778. 		</td>
    779. 

  779. 		<td width="44%">
    780. 

  780. 			<p>const string geometry_</p>
    781. 

  781. 		</td>
    782. 

  782. 		<td width="37%">
    783. 

  783. 			<p>Set geometry via C++ string</p>
    784. 

  784. 		</td>
    785. 

  785. 	</tr>
    786. 

  786. 	<tr>
    787. 

  787. 		<td width="10%">
    788. 

  788. 			<p>operator =</p>
    789. 

  789. 		</td>
    790. 

  790. 		<td width="10%">
    791. 

  791. 			<p>const Geometry&amp;</p>
    792. 

  792. 		</td>
    793. 

  793. 		<td width="44%">
    794. 

  794. 			<p>const char * geometry_</p>
    795. 

  795. 		</td>
    796. 

  796. 		<td width="37%">
    797. 

  797. 			<p>Set geometry via C string</p>
    798. 

  798. 		</td>
    799. 

  799. 	</tr>
    800. 

  800. 	<tr>
    801. 

  801. 		<td width="10%">
    802. 

  802. 			<p>operator string</p>
    803. 

  803. 		</td>
    804. 

  804. 		<td width="10%">
    805. 

  805. 			<p>string</p>
    806. 

  806. 		</td>
    807. 

  807. 		<td width="44%">
    808. 

  808. 			<p>Geometry&amp;</p>
    809. 

  809. 		</td>
    810. 

  810. 		<td width="37%">
    811. 

  811. 			<p>Obtain C++ string representation of geometry</p>
    812. 

  812. 		</td>
    813. 

  813. 	</tr>
    814. 

  814. </table>
    815. 

  815. <p>In addition, we support these yet to be documented geometry flags: the fill area flag ('^') and the pixel area count limit flag ('@').</p>
    816. 

  816. <p><br /><br />
    817. 

  817. </p>
    818. 

  818. </div>
    819. 

  819. </body>
    820. 

  820. </html>
    821.