Class 9 Computer Science Layers and Frames Notes

Computer Science
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Download Class 9 Computer Science Layers and Frames Notes in PDF format. All Revision notes for Class 9 Computer Science have been designed as per the latest syllabus and updated chapters given in your textbook for Computer Science in Class 9. Our teachers have designed these concept notes for the benefit of Class 9 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 9 Computer Science for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 9 Computer Science given on studiestoday

Revision Notes for Class 9 Computer Science Layers and Frames

Class 9 Computer Science students should refer to the following concepts and notes for Layers and Frames in Class 9. These exam notes for Class 9 Computer Science will be very useful for upcoming class tests and examinations and help you to score good marks

Layers and Frames Notes Class 9 Computer Science

LAYERS AND FRAMES
There are three types of layers in flash:
• Normal layer
• Guide / Guided layer
• Mask / Masked layer
 
Normal Layer: It’s the default layer this layer guides the path to the other layers. The layer is made the guide layer by selecting the layer properties (Modify < Timeline< Layer properties) and choosing the Layer type option as guide.
 
Guide / Guided layer

The layer that will follow the path provided by the guide layer will be called as Guided layer.
 
Note that the Guided layer do not appear in the Flash Movie.
 
Mask and Masked Layer: This layer lets you place any shape or symbol that will define the visible or non-visible portion of the layer below it. The graphical contents
of the mask layer will determine which portion of the layer below it will show through. A layer is selected as a mask layer by going to the layer properties and selection mask option. The layer below the mask layer is the masked layer.
 
For example, if you draw a filled circle in the mask layer and a number of colorful boxes in the masked layer, then the content of the masked layer will be shown through the circle made in the mask layer, of course, depending upon the path the mask layer will follow.
 
Layer Properties

All layers can be controlled through some properties associated with them. To open the Layer property dialog box, do any of these:
• Right click on the layer name and select properties.
OR
• Click the Modify option from the Menu bar and select layers.
To change the property of any layer, it should be selected. To select a layer, click on the layer name. A pencil icon will appear near the layer name, which indicates that the layer is selected and can be modified.
 
Adding a Layer

• To insert a layer, go to the Insert menu on the Menu bar and select Layer.
 
OR
• Right Click on any Layer and select Insert Layer.
 
Deleting a Layer

• Right Click on the Layer and select Delete Layer.
CBSE Class 9 Computer Science Layers and Frames Notes
FRAMES

Concept of Frame

Animation, is made from individual images. Actually, animation is a collection of a number of still images at different locations. But the transition from one image to
another is so fast that everything appears to be moving. Every image in animation is called a Frame.
 
To Insert a frame:

• Go to the Insert menu on the Menu bar and select timeline then frame.
OR
• Right Click the mouse button on the frame number and select the option Insert frame.
 
To Delete a frame:

• Right Click the mouse button on any create frame number and select the option Remove frame.
 
Note that the last frame will be deleted.
 
To Copy a frame:

• Select the frame number to be copied, right click the mouse button and select the option Copy frame.
 
To Paste a frame:

• To paste the frame, select the frame number when the frame is to be pasted, right click the mouse button and choose the option Paste frame.
 
Note: To select more than one frame, just click at the starting frame and drag till the end frame and you can perform the option like Delete frames for all the frames selected. Thus, all the frames selected will be deleted at once.
 
Keyframe and Blank Keyframe

A Keyframe is simply a frame in which the user can indicate the change at a particular point. That is, a keyframe indicates either the change in the image appearance or its position on the screen, so through a keyframe, you can indicate what should appear on the screen at a particular point. A keyframe might include an image or it might be blank. A Blank Keyframe is also a keyframe, but it's the one in which nothing appears on the screen.
 
To insert a Keyframe/ Blank Keyframe: -

• Choose a frame by clicking it, go to the Insert menu on the Menu bar and timeline choose the option Keyframe. If no image is present in the layer, then a blank keyframe is inserted.
OR
• Choose the frame, click the right mouse button and select the option Insert keyframe. To insert a Blank Keyframe select the option Insert Blank keyframe by clicking the right mouse button.
 
A keyframe when created will be indicated by either a white square or a solid circle. The contents for the keyframe are copied from the previous keyframe and if there is nothing on the previous keyframe, then a blank keyframe is inserted. Thus, if an image or an object is present in the previous keyframe, then that image or object will be copied to the new keyframe. If you click at any frame within the two keyframes, then the contents of the previous keyframe will be seen.

To Delete a Keyframe/ Blank Keyframe:

• Put the red marker on any of the created frame number, go to the Insert menu on the Menu bar and select delete frame.

OR

• Right Click the mouse button on any create frame number and select the option Delete frame.

Concept of a Symbol

Flash provides the facility to store the objects (i.e. images and text) in a place called

Library. Everytime a symbol is selected from the library to be used in the movie, its copy is used and this copy of the symbol is called as the Instance.

MOTION, SHAPE TWEENING

Flash provides you the facility to show the transition of the image from one keyframe to another keyframe. This transition is called as Tweening.

Through tweening, the user can not only see the transition from one image to another in terms of its shape but also in terms of its motion. For example, through tweening you can show a ball bouncing or moving vertically or horizontally or showing the change in the color of the text slowly, etc.

Flash has two types of tweening:

1. Motion Tweening

2. Shape Tweening

Motion Tweening: It is used to tween the text/image in terms of its: Position (i.e. to show the object moving from one place to another), Scale (i.e. to show the change in the size of the object),

Rotation (i.e. to show the change in the angle of the object),

Color (i.e. to show the change in the color of the text/image in terms of making the object light/bright, etc.)

Motion Tween works only on symbols and will not work oh layers, which contain more than one symbol. Shape modification is not allowed in motion tweening.

Shape Tweening: Shape Tweening is used when the change in the shape of the object is required to be shown. For example, shape tweening can be used to show the conversion of a circle to a semicircle. Shape Tweening doesn't work on symbols.

PROJECT WORK

Answer the following questions:

1. What is the difference between a Frame and a Keyframe?
2. What is the extension of a Flash file? Why do we need .swf file?
3. Why tweening is required in animation?
4. What is the difference between a Keyframe and a Blank Keyframe?
5. Why we use flash?
6. Explain the following terms: Stage, Scene, Layers and Timeline.
7. Differentiate between Ink Bottle Tool and Paint Bucket Tool.

Lab Work:

1. Make a ball and convert it into smiley using tweening.

 
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CBSE Class 9 Computer Science Layers and Frames Notes

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Layers and Frames CBSE Class 9 Computer Science Notes

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Notes for CBSE Computer Science Class 9 Layers and Frames

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