Difference between revisions of "Inkscape/C2/Basics-of-Bezier-Tool/English-timed"

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| '''Ubuntu Linux''' 12.04 OS
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|* '''Ubuntu Linux''' 12.04 OS
  
 
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| '''Inkscape''' version 0.48.4
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|* '''Inkscape''' version 0.48.4
  
 
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| There are 4 modes of drawing '''bezier curve'''.
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| There are 4 modes of drawing '''Bezier curve'''.
  
 
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| By default, the '''Create regular bezier path '''option is enabled.
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| By default, the '''Create regular Bezier path '''option is enabled.
  
 
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|  Click once on the canvas and move the cursor to the other end.
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|  Click once on the '''canvas''' and move the cursor to the other end.
  
 
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| Now right-click to complete the line.  
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| Now, right-click to complete the line.  
  
 
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|  Next, we will draw a curved line using '''bezier tool.'''
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|  Next, we will draw a curved line using '''Bezier tool.'''
  
 
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|  If you click once and move the cursor, we see a straight path in red color. To make it as curve, click and drag.
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|  If you click once and move the cursor, we see a straight path in red color. To make it as a curve, click and drag.
  
 
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|  Again at the end node the line curves as we move.  
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|  Again at the end node, the line curves as we move.  
  
 
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|  Again click once; we see a straight path in red color. To make the straight line curve, click and drag.
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|  Again click once; we see a straight path in red color. To make the straight line curved, click and drag.
  
 
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|  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.
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|  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'''.
  
 
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|  Now, let us learn to add, edit and delete '''nodes'''.  
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|  Now, let us learn how to add, edit and delete '''nodes'''.  
  
 
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|  Turn your attention to the '''Tools Controls bar.'''
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|  Turn your attention to the '''Tool Controls bar.'''
  
 
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|  Now select a smaller segment and repeat the above steps.
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|  Now, select a smaller segment and repeat the above steps.
  
 
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|  Click on '''Delete node '''option. The node is now deleted.
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|  Click on the '''Delete node '''option. The node is now deleted.
  
 
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| To make the '''bezier handle''' visible, click on the last but one icon on the '''Tool controls bar. '''
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| To make the '''Bezier handle''' visible, click on the last but one icon on the '''Tool controls bar. '''
  
 
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|  Now, the '''bezier handles''' for the selected segment is visible.  
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|  Now, the '''Bezier handles''' for the selected segment is visible.  
  
 
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|  If not, then just click on the segment and without releasing the mouse, move it a little.
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|  If not, then just click on the segment and without releasing the '''mouse''', move it a little.
  
 
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| The segment will curve and the '''bezier handles''' will be visible now.
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| The segment will curve and the '''Bezier handles''' will be visible now.
  
 
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|  Observe there is an extra '''node''' on the index finger.  
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|  Observe, there is an extra '''node''' on the index finger.  
  
 
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| Now, click on '''join node''' icon. Observe that the nodes are now joined together.
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| Now, click on '''Join node''' icon. Observe that the nodes are now joined together.
  
 
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|  So, select the joining''' node''' in between and click on '''break path''' icon.
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|  So, select the joining''' node''' in between and click on '''Break path''' icon.
  
 
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|  Un-select the '''node. '''Then select it again and move it a little.  
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|  Un-select the node. Then select it again and move it a little.  
  
 
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|  To join them, select the same 2 '''nodes''' and click on the '''join selected end-nodes''' icon on the '''Tool controls bar. '''
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|  To join them, select the same 2 '''nodes''' and click on the '''Join selected end-nodes''' icon on the '''Tool controls bar. '''
  
 
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| Click on the '''bezier handles''' and move them up and down to see the change.  
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| Click on the '''Bezier handles''' and move them up and down to see the change.  
  
 
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| Click on the '''bezier handle''' and try to move. You will see that we cannot make it curved.
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| Click on the '''Bezier handle''' and try to move. You will see that we cannot make it curved.
  
 
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| Now move the '''bezier handles''' and  now we can make it into a curve shape.
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| Now, move the '''Bezier handles''' and  now we can make it into a curve shape.
  
 
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|  Draw a flower with 5 petals, 1 stem and 2 leaves using '''bezier tool'''.
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|  Draw a flower with 5 petals, 1 stem and 2 leaves using '''Bezier tool'''.
 
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Revision as of 11:36, 11 September 2015

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- 1. Click and draw a straight line.
01:59 2. Click again, hold and drag to form a curve.
02:03 3. 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 a 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 curved, 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 how 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 Tool Controls bar.
05:33 The first 6 icons here, help 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 the 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 me 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 Un-select 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 help 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 work 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 help 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 work 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. Please 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

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