Page 104 - trackpad v5.1 class 4 flipbook
P. 104
CREATING SHAPES
We have learnt how to control sprites in the previous chapter. In this chapter, we will learn
about creating shapes. Thus, we can repeat the actions of a stack of blocks by making use
of the various blocks in the Control block category.
PEN BLOCK
Pen blocks provide a trail for the sprite and give instructions to change the colour, size
and shade of the trail. These blocks are colour-coded as dark green and used to draw
shapes in Scratch. We can add pen blocks by clicking on the Add Extension button, then
clicking on Pen extension to add it. Let us read pen blocks and their functions.
Blocks Functions
pen down It places the pen in the down position.
pen up It disables drawing operations by lifting the
pen.
set pen color to It specifies the colour to be used while drawing.
Change pen color by 10 It modifies the colour of a line.
It modifies the thickness of the pen. You can
also change the thickness by writing the
Change pen by 1
desired number in the number box, number 1
being the least thick.
stamp It draws or stamps the image of a sprite onto
the stage.
erase all It erases the pen marks from the stage.
Drawing a Line
To draw a line, follow the given steps:
Step 1 Drag a when clicked block to the scripts area from the Events menu.
102 Pro (V5.1)-IV

