Question

What is a positive rotation specified in MonoGame clockwise or counterclockwise?

This method involves three operations: rotation, translation, and scaling.  Explain the order of these three operations applied to the sprite.

Answer 1

• The positive rotation specified in the MonoGame is clockwise.

• First, let us understand what sprite actually is and what it does.
• Sprite basically represents a graphical object which can be drawn. This is used heavily to create visual effects in chart. We can create an image by adding more sprites to Ext.draw.container.
• Also, Sprite is an abstract class and there are lots of types of sprite available to use. The reason sprite is useful because when we change attributes the surface re-renders, so grouping sprite by a surface is good practice.

• Order of the operations:

1. Firstly, Scaling happens. The process is as follows:

The first operation is performed by specifying exact amount of scaling in both the x-axis and y-axis. The value 1 which represents 100% and 2 is equal to 200%.

2. Secondly, the rotation happens. This process is as follows:

Then we apply an angle to rotate sprite. This can be a degree or user-defined configuration value.

3. Thirdly, translation happens. The process is as follows:

Lastly, we apply this operation by adjusting the position of x/y to the sprite.

• Why this order is followed?

• First of all, we have to scale the object because, without scaling translation can't work properly. Then we have to rotate in terms of the axis to make sure the translation happens on the newly adjusted axis. Then after translation can take place.
• There is another reason for the order of execution. Practically we want scaling along axis of the particular object. Rotation should take place according to the center of that particular object. And then translation happens.

//....Feel free to comment any doubts....//