What is window to viewport transformation?

Window to Viewport Transformation is the process of transforming 2D world-coordinate objects to device coordinates. Objects inside the world or clipping window are mapped to the viewport which is the area on the screen where world coordinates are mapped to be displayed.

What is windowing transformation?

Windowing is the process of transforming co-ordinates from one space to another. It is used when scaling and transforming the view of a program. For example: when you zoom into an image, the original image data is transformed to fill the current screen. This is done through an area referred to as the “window”.

What does the viewport transformation do?

The simplest of the transforms is the viewport transform. It transforms x and y clip coordinates to the coordinates that are used on the display device. To specify the viewport transform, it is only necessary to specify the rectangle on the device where the scene will be rendered.

What is meant by window and viewport?

The window, in effect, defines the portion of the graph that is to be displayed in world coordinates, and the viewport specifies the area on the device on which the image is to appear.

Why do we need viewing transformation?

Remember that purpose of the viewing transformation is to orient the objects in a coordinate system where the center of projection is located at the origin. This coordinate system is called either eye space or camera space.

What is the difference between viewport and window port?

Window port helps to determine the section of the scene to be displayed, whereas the viewport helps to position the scene on the output device. This is another difference between window port and view port.

What do you mean by viewport?

A viewport represents a polygonal (normally rectangular) area in computer graphics that is currently being viewed. In web browser terms, it refers to the part of the document you’re viewing which is currently visible in its window (or the screen, if the document is being viewed in full screen mode).

What is a window How is it related to the viewport derive the window to viewport mapping?

Window to viewport transformation: Window-to-Viewport transformation is the process of transforming a two-dimensional, world-coordinate scene to device coordinates. In particular, objects inside the world or clipping window are mapped to the viewport. The viewport is displayed in the interface window on the screen.

How Windowing is useful in computer graphics?

The method of selecting and enlarging a portion of a drawing is called windowing. The area chosen for this display is called a window. The window is selected by world-coordinate. Sometimes we are interested in some portion of the object and not in full object.

Which are the steps involved in window to viewport coordinate transformation in 2D?

Matrix Representation of the above three steps of Transformation:

• Step1:Translate window to origin 1. Tx=-Xwmin Ty=-Ywmin
• Step2:Scaling of the window to match its size to the viewport. Sx=(Xymax-Xvmin)/(Xwmax-Xwmin)
• Step3:Again translate viewport to its correct position on screen. Tx=Xvmin
• Note:

What is viewing transformation explain in detail the various steps involved in the process?

The viewing transformation which maps picture co-ordinates in the WCS to display co-ordinates in PDCS is performed by the following transformations. Converting world co-ordinates to viewing co-ordinates. Normalizing viewing co-ordinates. Converting normalized viewing co-ordinates to device co-ordinates.

What is WCS and Pdcs?

We know that the picture is stored in the computer memory using any convenient Cartesian coordinate system, referred to as World Coordinate System (WCS). However, when picture is displayed on the display device it is measured in Physical Device Coordinate System (PDCS) corresponding to the display device.