1<?xml version="1.0" encoding="UTF-8"?> 2 3<!--*********************************************************** 4 * 5 * Licensed to the Apache Software Foundation (ASF) under one 6 * or more contributor license agreements. See the NOTICE file 7 * distributed with this work for additional information 8 * regarding copyright ownership. The ASF licenses this file 9 * to you under the Apache License, Version 2.0 (the 10 * "License"); you may not use this file except in compliance 11 * with the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, 16 * software distributed under the License is distributed on an 17 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 18 * KIND, either express or implied. See the License for the 19 * specific language governing permissions and limitations 20 * under the License. 21 * 22 ***********************************************************--> 23 24<helpdocument version="1.0"> 25<meta> 26<topic id="textsimpressguideline_drawxml" indexer="include" status="PUBLISH"> 27<title id="tit" xml-lang="en-US">Drawing Curves</title> 28<filename>/text/simpress/guide/line_draw.xhp</filename> 29</topic> 30</meta> 31<body> 32<bookmark xml-lang="en-US" branch="index" id="bm_id3149377"> 33<bookmark_value>lines; drawing</bookmark_value> 34<bookmark_value>curves; drawing</bookmark_value> 35<bookmark_value>control points definition</bookmark_value> 36<bookmark_value>corner points</bookmark_value> 37<bookmark_value>drawing;lines</bookmark_value> 38</bookmark> 39<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> 40</variable></paragraph> 41<paragraph role="paragraph" id="par_id3148868" xml-lang="en-US" l10n="CHG" oldref="4">The <emph>Curve</emph> icon 42<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> 43</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> 44<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> 45<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> 46<list type="unordered"> 47<listitem> 48<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> 49</listitem> 50<listitem> 51<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> 52</listitem> 53<listitem> 54<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> 55</listitem> 56</list> 57<paragraph role="heading" id="hd_id46388" xml-lang="en-US" level="2" l10n="NEW">How to use the Curve tool</paragraph> 58<list type="ordered"> 59<listitem> 60<paragraph role="paragraph" id="par_id3155262" xml-lang="en-US" l10n="CHG" oldref="5">On the Drawing toolbar, open the <emph>Curves</emph> toolbar 61<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> 62</image> and select the <emph>Curve</emph> 63<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> 64</image> tool.</paragraph> 65</listitem> 66<listitem> 67<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> 68<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> 69</listitem> 70<listitem> 71<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> 72</listitem> 73<listitem> 74<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> 75</listitem> 76<listitem> 77<paragraph role="paragraph" id="par_id1556443" xml-lang="en-US" l10n="NEW">Do one of the following:</paragraph> 78</listitem> 79</list> 80<list type="unordered"> 81<listitem> 82<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> 83<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> 84</listitem> 85<listitem> 86<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> 87</listitem> 88<listitem> 89<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> 90</listitem> 91</list> 92<paragraph role="heading" id="hd_id2071596" xml-lang="en-US" level="2" l10n="NEW">How to use the Freeform Line tool</paragraph> 93<list type="ordered"> 94<listitem> 95<paragraph role="paragraph" id="par_id4907681" xml-lang="en-US" l10n="NEW">On the Drawing toolbar, open the <emph>Curves</emph> toolbar 96<image id="Graphic2" src="res/commandimagelist/sc_linetoolbox.png" width="0.222inch" height="0.222inch"><alt id="alt_" xml-lang="en-US">Icon</alt> 97</image> and select the <emph>Freeform Line</emph> 98<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> 99</image> tool.</paragraph> 100</listitem> 101<listitem> 102<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> 103</listitem> 104<listitem> 105<paragraph role="paragraph" id="par_id5792107" xml-lang="en-US" l10n="NEW">Draw the freeform line as you would do with a pencil.</paragraph> 106</listitem> 107<listitem> 108<paragraph role="paragraph" id="par_id7734916" xml-lang="en-US" l10n="NEW">Release the mouse button to finish the line.</paragraph> 109</listitem> 110</list> 111<section id="relatedtopics"> 112<embed href="text/simpress/guide/line_edit.xhp#line_edit"/> 113<embed href="text/simpress/guide/vectorize.xhp#vectorize"/> 114<embed href="text/simpress/guide/3d_create.xhp#3d_create"/> 115<embed href="text/simpress/guide/text2curve.xhp#text2curve"/> 116</section> 117</body> 118</helpdocument> 119
