1<?xml version="1.0" encoding="UTF-8"?> 2 3 4<!--*********************************************************** 5 * 6 * Licensed to the Apache Software Foundation (ASF) under one 7 * or more contributor license agreements. See the NOTICE file 8 * distributed with this work for additional information 9 * regarding copyright ownership. The ASF licenses this file 10 * to you under the Apache License, Version 2.0 (the 11 * "License"); you may not use this file except in compliance 12 * with the License. You may obtain a copy of the License at 13 * 14 * http://www.apache.org/licenses/LICENSE-2.0 15 * 16 * Unless required by applicable law or agreed to in writing, 17 * software distributed under the License is distributed on an 18 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 19 * KIND, either express or implied. See the License for the 20 * specific language governing permissions and limitations 21 * under the License. 22 * 23 ***********************************************************--> 24 25 26 27<helpdocument version="1.0"> 28<meta> 29<topic id="textsimpressguideline_drawxml" indexer="include" status="PUBLISH"> 30<title id="tit" xml-lang="en-US">Drawing Curves</title> 31<filename>/text/simpress/guide/line_draw.xhp</filename> 32</topic> 33<history> 34<created date="2003-10-31T00:00:00">Sun Microsystems, Inc.</created> 35<lastedited date="2006-10-23T14:01:00">FPE: Deleted Screenshot. Cleaned.</lastedited> 36</history> 37</meta> 38<body> 39<bookmark xml-lang="en-US" branch="index" id="bm_id3149377"><bookmark_value>lines; drawing</bookmark_value> 40<bookmark_value>curves; drawing</bookmark_value> 41<bookmark_value>control points definition</bookmark_value> 42<bookmark_value>corner points</bookmark_value> 43<bookmark_value>drawing;lines</bookmark_value> 44</bookmark> 45<paragraph role="heading" id="hd_id3149377" xml-lang="en-US" level="1" l10n="U" oldref="3"><variable id="line_draw"><link href="text/simpress/guide/line_draw.xhp" name="Drawing Curves">Drawing Curves</link> 46</variable></paragraph> 47<paragraph role="paragraph" id="par_id3148868" xml-lang="en-US" l10n="CHG" oldref="4">The <emph>Curve</emph> icon 48<image id="img_id3150205" src="res/commandimagelist/sc_linetoolbox.png" width="0.222inch" height="0.222inch"><alt id="alt_id3150205" xml-lang="en-US">Icon</alt> 49 </image> on the <emph>Drawing</emph> toolbar opens a toolbar to draw Bézier curves. Bézier curves are defined by a start point and an end point, which are called "anchors". The curvature of the Bézier curve is defined by control points ("handles"). Moving a control point changes the shape of the Bézier curve.</paragraph> 50<paragraph role="note" id="par_id8532364" xml-lang="en-US" l10n="NEW">Control points are only visible in "Edit Points" mode. Control points are represented by circles, anchor points are represented by squares. The start point is a little bit larger than the other anchor points.</paragraph> 51<paragraph role="paragraph" id="par_id3150210" xml-lang="en-US" l10n="CHG" oldref="39">Bézier curve segments and straight line segments can be joined to form more complex Bézier curves. Three different transitions can be applied to join adjacent segments:</paragraph> 52<list type="unordered"> 53<listitem> 54<paragraph role="listitem" id="par_id3154766" xml-lang="en-US" l10n="CHG" oldref="25">A <emph>symmetrical</emph> anchor point has the same line curvature on either side, and two control lines that move together as a straight line.</paragraph> 55</listitem> 56<listitem> 57<paragraph role="listitem" id="par_id3149874" xml-lang="en-US" l10n="CHG" oldref="26">A <emph>smooth</emph> anchor point may have different line curvatures on either side.</paragraph> 58</listitem> 59<listitem> 60<paragraph role="listitem" id="par_id3150435" xml-lang="en-US" l10n="CHG" oldref="27">A <emph>corner</emph> anchor point has one or two independent control lines. Changing one side has no effect on the other side.</paragraph> 61</listitem> 62</list> 63<paragraph role="heading" id="hd_id46388" xml-lang="en-US" level="2" l10n="NEW">How to use the Curve tool</paragraph> 64<list type="ordered"> 65<listitem> 66<paragraph role="paragraph" id="par_id3155262" xml-lang="en-US" l10n="CHG" oldref="5">On the Drawing toolbar, open the <emph>Curves</emph> toolbar 67<image id="img_id3145829" src="res/commandimagelist/sc_linetoolbox.png" width="0.222inch" height="0.222inch"><alt id="alt_id3145829" xml-lang="en-US">Icon</alt> 68 </image> and select the <emph>Curve</emph> 69<image id="Graphic1" src="res/commandimagelist/sc_bezier_unfilled.png" width="0.222inch" height="0.222inch"><alt id="alt_" xml-lang="en-US">Icon</alt> 70 </image> tool.</paragraph> 71</listitem> 72<listitem> 73<paragraph role="paragraph" id="par_id3155928" xml-lang="en-US" l10n="CHG" oldref="6">Click where you want the curve to start, and drag in the direction where you want the curve to go. The control line will indicate the direction. </paragraph> 74<paragraph role="paragraph" id="par_id8174687" xml-lang="en-US" l10n="NEW">Hold down <item type="keycode">Shift</item> while you drag to restrict the direction to a 45 degree grid.</paragraph> 75</listitem> 76<listitem> 77<paragraph role="paragraph" id="par_id3148390" xml-lang="en-US" l10n="CHG" oldref="41">Release the mouse where the first control point should be.</paragraph> 78</listitem> 79<listitem> 80<paragraph role="paragraph" id="par_id3154865" xml-lang="en-US" l10n="U" oldref="22">Move the pointer to where you want the curve segment to end. The curve follows the pointer. </paragraph> 81</listitem> 82<listitem> 83<paragraph role="paragraph" id="par_id1556443" xml-lang="en-US" l10n="NEW">Do one of the following:</paragraph> 84</listitem> 85</list> 86<list type="unordered"> 87<listitem> 88<paragraph role="paragraph" id="par_id3151172" xml-lang="en-US" l10n="CHG" oldref="9">Double-click on the position of the end point to finish drawing the line. </paragraph> 89<paragraph role="paragraph" id="par_id5377056" xml-lang="en-US" l10n="NEW">To create a closed shape, double-click the starting point of the line.</paragraph> 90</listitem> 91<listitem> 92<paragraph role="paragraph" id="par_id3153919" xml-lang="en-US" l10n="CHG" oldref="23">Click and release the mouse button to add an anchor point. Move the mouse to draw the next segment.</paragraph> 93</listitem> 94<listitem> 95<paragraph role="paragraph" id="par_id3149451" xml-lang="en-US" l10n="CHG" oldref="43">Click and drag in any direction to add a smooth anchor point.</paragraph> 96</listitem> 97</list> 98<paragraph role="heading" id="hd_id2071596" xml-lang="en-US" level="2" l10n="NEW">How to use the Freeform Line tool</paragraph> 99<list type="ordered"> 100<listitem> 101<paragraph role="paragraph" id="par_id4907681" xml-lang="en-US" l10n="NEW">On the Drawing toolbar, open the <emph>Curves</emph> toolbar 102<image id="Graphic2" src="res/commandimagelist/sc_linetoolbox.png" width="0.222inch" height="0.222inch"><alt id="alt_" xml-lang="en-US">Icon</alt> 103 </image> and select the <emph>Freeform Line</emph> 104<image id="Graphic3" src="res/commandimagelist/sc_freeline_unfilled.png" width="0.222inch" height="0.222inch"><alt id="alt_" xml-lang="en-US">Icon</alt> 105 </image> tool.</paragraph> 106</listitem> 107<listitem> 108<paragraph role="paragraph" id="par_id1122165" xml-lang="en-US" l10n="NEW">Click where you want the curve to start, and keep holding the mouse button down.</paragraph> 109</listitem> 110<listitem> 111<paragraph role="paragraph" id="par_id5792107" xml-lang="en-US" l10n="NEW">Draw the freeform line as you would do with a pencil.</paragraph> 112</listitem> 113<listitem> 114<paragraph role="paragraph" id="par_id7734916" xml-lang="en-US" l10n="NEW">Release the mouse button to finish the line.</paragraph> 115</listitem> 116</list> 117<section id="relatedtopics"> 118<embed href="text/simpress/guide/line_edit.xhp#line_edit"/> 119<embed href="text/simpress/guide/vectorize.xhp#vectorize"/> 120<embed href="text/simpress/guide/3d_create.xhp#3d_create"/> 121<embed href="text/simpress/guide/text2curve.xhp#text2curve"/> 122</section> 123</body> 124</helpdocument> 125
