Canvas tutorial 02 | How to draw round angle polygon in the flutter?

<p>Canvas tutorial 01. There is some basic knowledge for you to learn.</p> <p>= 0.0; }</p> <p>*markup--em markup--pre-em](///the x coordinate whether or not is between two point we give. ***markup--strong markup--pre-strong](static **bool <em>markup--em markup--pre-em](_betweenPoint</em>(x, Point p1, Point p2) { **markup--strong markup--pre-strong](if **(p1.x > p2.x) { **markup--strong markup--pre-strong](return **x > p2.x && x p1.x && x p2.y) { **markup--strong markup--pre-strong](return **Point(p2.x, p2.y + r); } **markup--strong markup--pre-strong](else if **(p1.y p2.x) { **markup--strong markup--pre-strong](return **Point(p2.x + r, p2.y); } **markup--strong markup--pre-strong](else if **(p1.x Canvas tutorial 01. If you don’t know how to use, you should watch it before continuing. In our <code>**markup--strong markup--p-strong](void **paint(Canvas canvas, Size size)</code> function we will draw our shape.</p> <p>ps, double distance, Canvas canvas, paint) { **markup--strong markup--pre-strong](var **path = Path(); ps.add(ps[0]); ps.add(ps[1]); **markup--strong markup--pre-strong](var **p0 = LineInterCircle.<em>markup--em markup--pre-em](intersectionPoint</em>(ps[1], ps[0], distance); path.moveTo(p0.x, p0.y); **markup--strong markup--pre-strong](for **(int i = 0; i 1.0 && size.height > 1.0) { print(">1.9"); _sizeUtil.logicSize = size; } } _resizePoint(List list) { List l = List(); **markup--strong markup--pre-strong](for **(**markup--strong markup--pre-strong](var **p **markup--strong markup--pre-strong](in **list) { l.add(Point(_sizeUtil.getAxisX(p.x), _sizeUtil.getAxisY(p.y))); } **markup--strong markup--pre-strong](return **l; } list1 = [ Point(250.0, 0.0), Point(425.0, 75.0), Point(500.0, 250.0), Point(425.0, 425.0), Point(250.0, 500.0), Point(75.0, 426.0), Point(0.0, 250.0), Point(75.0, 75.0), ]; paint.color = RED_DARK1; _drawWithPoint(canvas, paint, list1); 1.0 && size.height > 1.0) { print(">1.9"); _sizeUtil.logicSize = size; } **markup--strong markup--pre-strong](var **paint = Paint() ..style = PaintingStyle.fill ..color = BLUE_NORMAL ..isAntiAlias = <strong>markup--strong markup--pre-strong](true</strong>; List list1 = [ Point(250.0, 0.0), Point(425.0, 75.0), Point(500.0, 250.0), Point(425.0, 425.0), Point(250.0, 500.0), Point(75.0, 426.0), Point(0.0, 250.0), Point(75.0, 75.0), ]; paint.color = RED_DARK1; _drawWithPoint(canvas, paint, list1); List list2 = [ Point(250.0, 53.0), Point(392.0, 108.0), Point(449.0, 250.0), Point(392.0, 390.0), Point(250.0, 448.0), Point(110.0, 390.0), Point(54.0, 250.0), Point(110.0, 108.0), ]; paint.color = RED_DARK2; _drawWithPoint(canvas, paint, list2, hasShadow: <strong>markup--strong markup--pre-strong](true</strong>);</p> <p>List list3 = [ Point(250.0, 100.0), Point(358.0, 143.0), Point(400.0, 250.0), Point(355.0, 355.0), Point(250.0, 400.0), Point(144.0, 357.0), Point(100.0, 250.0), Point(144.0, 144.0), ]; paint.color = RED_DARK3; _drawWithPoint(canvas, paint, list3, hasShadow: <strong>markup--strong markup--pre-strong](true</strong>);</p> <p>List list4 = [ Point(250.0, 150.0), Point(320.0, 180.0), Point(348.0, 250.0), Point(320.0, 320.0), Point(250.0, 348.0), Point(180.0, 320.0), Point(150.0, 250.0), Point(180.0, 180.0), ]; paint.color = RED_DARK4; _drawWithPoint(canvas, paint, list4, hasShadow: <strong>markup--strong markup--pre-strong](true</strong>);</p> <p>List list5 = [ Point(250.0, 202.0), Point(286.0, 217.0), Point(300.0, 250.0), Point(284.0, 284.0), Point(250.0, 300.0), Point(214.0, 282.0), Point(202.0, 250.0), Point(216.0, 216.0), ]; paint.color = RED_DARK5; _drawWithPoint(canvas, paint, list5, hasShadow: <strong>markup--strong markup--pre-strong](true</strong>);</p> <p>List listYellow = [ Point(110.0, 104.0), Point(250.0, 153.0), Point(358.0, 143.0), Point(450.0, 252.0), Point(369.0, 349.0), Point(250.0, 504.0), Point(140.0, 353.0), Point(100.0, 250.0), ]; paint.color = <em>markup--em markup--pre-em](YELLOW_NORMAL.withOpacity(0.5); _drawWithPoint(canvas, paint, listYellow); canvas.save(); canvas.restore</em>(); }<h3 name="dfe6graf graf--h3](Conclusion<p name="878egraf graf--p](In this article, we learn how to draw the round angle polygon.</p> <p><p name="dd5egraf graf--p](1. Consider the comply method, how to change the right angle to round angle. If we want to draw the regular polygon, it will a bit different, I will try to comply with this situation in the future.</p> <p><p name="6e8fgraf graf--p](2. Certain the two points near the angle, this is very important with our way.</p> <p><p name="ed77graf graf--p](3. draw the round angle, with three points and a distance we certain the angle.</p> <p><p name="605egraf graf--p](4. We use the points of a list to certain the round angle polygon</p> <p><p name="cfbbgraf graf--p](5. We handle the size between the logic size and design size, then we use it.</p> <p><h4 name="092dgraf graf--h4](The whole project is here, thanks for a star: [https://github.com/FlutterOpen/flutter-canvasdata-href="<a href=> https:="github.com="flutteropen="flutter-canvas"="</a><a href="https://github.com/FlutterOpen/flutter-canvas">https://github.com/FlutterOpen/flutter-canvas</a><h3 name="01dcgraf graf--h3](Creat by [https://www.facebook.com/flutteropen/data-href="<a href=> https:="www.facebook.com="flutteropen=""="</a><a href="https://www.facebook.com/flutteropen">https://www.facebook.com/flutteropen</a><p name="e484graf graf--p](— end —</p> <p><p name="3659graf graf--p](#Github Developer: [https://github.com/nb312/flutter-ui-nicedata-href="<a href=> https:="github.com="nb312="flutter-ui-nice"="</a><a href="https://github.com/nb312">https://github.com/nb312</a></p> <p><p name="8cd4graf graf--p](#Github Page: [https://www.facebook.com/flutteropendata-href="<a href=> https:="www.facebook.com="flutteropen"="</a><a href="https://www.facebook.com/flutteropen">https://www.facebook.com/flutteropen</a></p> <p><p name="bf58graf graf--p](#Facebook group: [https://www.facebook.com/groups/948618338674126/?source_id=2005989649497620data-href="<a href=""> https:="www.facebook.com="groups="948618338674126="?source_id="2005989649497620"</a><a href="https://www.facebook.com/groups/948618338674126/?source_id=2005989649497620">https://www.facebook.com/groups/948618338674126/?source_id=2005989649497620</a></p>