Inkscape/C2/Basics-of-Bezier-Tool/English-timed

Time	Narration
00:00	Welcome to the Spoken Tutorial on “Basics of Bezier tool” using Inkscape.
00:06	In this tutorial we will learn to
00:08	Draw straight lines and closed shapes
00:11	Draw curved lines
0013	Add, edit and delete nodes
00:15	To record this tutorial, I am using
00:18	Ubuntu Linux 12.04 OS
00:21	Inkscape version 0.48.4
00:24	I will be recording this tutorial in maximum resolution mode.
00:28	This is to accommodate all the tools that will be demonstrated.
00:32	Let us open Inkscape.
00:35	First let us draw a straight line using Bezier tool.
00:39	The Bezier tool is right below the Pencil tool.
00:42	Let's click on it.
00:44	Observe the 4 options in the Tool controls bar at the top left.
00:48	There are 4 modes of drawing bezier curve.
00:51	By default, the Create regular bezier path option is enabled.
00:57	Click once on the canvas and move the cursor to the other end.
01:01	Click once again. Notice that the line drawn is highlighted in green color.
01:07	Now right-click to complete the line.
01:11	The two end points of the line are called nodes. We will learn more about them a little later.
00:17	Next, let us draw a triangle.
01:21	First draw a slanted line. Click once and draw another line at an angle.
01:27	Now click once more to draw a third line and join it with the starting node to complete the triangle.
01:34	Next, we will draw a curved line using bezier tool.
01:38	Click on the canvas to draw a straight line. Click again, hold and drag to form a curve.
01:46	Right-click to complete the curve.
01:48	In a similar way, draw some more curve shapes on the canvas.
01:55	Remember these steps- Click and draw a straight line.
01:59	Click again, hold and drag to form a curve.
02:03	Then right-click to complete the curve.
02:06	Press Ctrl + A and clear the canvas before proceeding further.
02:11	Next let us learn how to draw a closed curved path.
02:15	First draw a curved line on the canvas.
02:18	Then we release the mouse and move the cursor away from the end node of the curved line.
02:23	We see a curved path in red color.
02:27	If you click once and move the cursor, we see a straight path in red color. To make it as curve click and drag.
02:36	Again at the end node the line curves as we move.
02:41	Again click once we see a straight path in red color. To make the straight line curve, click and drag
02:50	Again at the end node the line curves as we move. Move the cursor and go back to the starting node and close the path.
02:59	Go to Tool controls bar. Click on the second icon of the mode. This helps to create spiral paths and irregular shapes.
03:08	Draw some irregular curves and close the path.
03:15	Observe that it transforms into the closest spiral shape. Let me clear the canvas now.
03:22	The third icon creates only straight lines. Click on it and draw lines on the canvas.
03:29	Note we cannot draw curved lines in this mode.
03:32	We can draw triangles or polygons which have straight sides.
03:40	Click on the last icon and draw on the canvas.
03:44	In this mode, we can draw only parallel and perpendicular lines i.e. either vertical or horizontal lines.
03:52	So, we can draw squares and rectangles in this mode.
03:58	Let me delete all the shapes drawn.
04:02	Shape option helps to draw lines or curves in a particular shape.
04:07	Click on the drop down button.
04:09	There are 5 options here- None, Triangle in, Triangle out, Ellipse, From clipboard.
04:18	The first option that is None does not give any effect. So we will move on to Triangle in.
04:25	Click on it and draw a line on the canvas.
04:28	The line is transformed to a triangle shape inwards.
04:34	Next click on Triangle out and draw a line on the canvas.
04:39	Now a triangle shape is formed outwards.
04:43	Click on the Ellipse and draw a line.
04:47	Observe that the line is in ellipse shape.
04:50	We will learn about the last option that is From clipboard in later tutorial.
04:56	Now, let us learn to add, edit and delete nodes.
05:00	This can be done using the Node tool.
05:03	Delete the lines on the canvas.
05:06	Go to Tool controls bar. Change the Mode to regular path and Shape to None.
05:13	Come back to the canvas and draw a rough human palm.
05:23	Now click on the Node tool.
05:26	Notice all the nodes in this figure are visible.
05:30	Turn your attention to the Tools Controls bar.
05:33	The first 6 icons here, helps to add and delete nodes and paths.
05:38	Refer to the tool tip to understand better.
05:41	Click on any segment. Notice both the nodes turn blue.
05:48	Then click on the Add node option.
05:52	Observe that a new node has been added exactly in-between the nodes of the selected segment.
05:58	Now select a smaller segment and repeat the above steps.
06:04	You will see that a new node is added at the mid-point of the smaller segment.
06:10	Now, select the newly added node.
06:13	Click on Delete node option. The node is now deleted.
06:18	Click on any one of the nodes on the palm.
06:21	To make the bezier handle visible click on the last but one icon on the Tool controls bar.
06:27	Now the bezier handles for the selected segment is visible.
06:32	If not, then just click on the segment and without releasing the mouse, move it a little.
06:37	The segment will curve and the bezier handles will be visible now.
06:41	Click on the handles to resize and rotate the selected node.
06:45	In a similar way, modify the other nodes too.
07:04	The next icon helps to join nodes.
07:07	Observe there is an extra node on the index finger.
07:11	Select the extra middle node and the top node by using the Shift key.
07:18	Now click on join node icon. Observe that the nodes are now joined together.
07:25	The next icon helps to break path at selected nodes.
07:29	Let now break the connection between the thumb and the index finger.
07:33	So select the joining node in between and click on break path icon.
07:40	Unselect the node. Then select it again and move it a little.
07:46	You will notice that the path is broken and the nodes are separated into 2 distinct nodes.
07:53	To join them, select the same 2 nodes and click on the join selected end-nodes icon on the Tool controls bar.
08:03	Notice, a new path is created between these 2 nodes.
08:08	Click on the next icon i.e. Delete segment icon to remove the path or segment. Now the path is removed.
08:17	Press Ctrl + Z to undo this action
08:20	Let me keep this hand aside. Click on the Node tool once again.
08:26	Let us learn how to use next 4 icons on the Tool controls bar.
08:30	These icons helps to edit the selected nodes.
08:34	Using the Bezier tool draw an inverted U shape. Click on the Node tool. Observe there are 3 nodes.
08:49	Select the top node and click on Make selected nodes corner icon on the Tool controls bar.
08:55	This makes it as the corner node.
08:58	Click on the bezier handles and move them up and down to see the change.
09:03	Click on the next icon to make the node smooth. Observe the change in the shape.
09:11	Click on the next icon which makes the node symmetric.
09:16	Click on the next icon which makes the node auto smooth.
09:20	The next 2 icons works only on segments. So, select the left segment of the U shape and click on the first icon.
09:30	As the tool tip says, the segment is now made into a straight line.
09:35	Click on the bezier handle and try to move. You will see that we cannot make it curved.
09:44	Click on the next icon to make it a curved line again.
09:49	Now move the bezier handles and now we can make it into a curve shape.
09:54	Click on the next icon to convert selected object to path.
09:58	Click on the next icon to convert the stroke to path.
10:02	Click and drag the nodes to make the strokes visible.
10:08	The next 2 icons helps to move the selected nodes in X and Y directions respectively.
10:15	Click on the up and down arrows and observe the change.
10:24	The next 2 icons works only if the path has clipping and masking effects.
10:29	You can explore these options on your own.
10:33	Let us summarize.
10:34	In this tutorial we learnt to
10:37	Draw straight lines and closed shapes
10:39	Draw curved lines
10:41	Add, edit and delete nodes
10:43	Here is an assignment for you
10:46	Draw a flower with 5 petals, 1 stem and 2 leaves using bezier tool.
10:52	Color the petals with pink color.
10:54	Color the stem and leaves with green color.
10:57	Your completed assignment should look like this.
11:00	The video available at the following link summarizes the Spoken Tutorial project. Pls watch it.
11:05	The Spoken Tutorial Project Team conducts workshops and gives certificates for those who pass an online test.
11:12	For more details, please write to us.
11:14	Spoken Tutorial Project is supported by NMEICT, MHRD, Government of India.
11:20	More information on this Mission is available at this link.
11:24	We have come to the end of this tutorial.
11:26	This is Arthi and Saurabh from IIT Bombay, signing off. Thanks for joining.

Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14