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(a) Voltage or Electro-Magnetic Field Tablet and Pointer: This has a grid of wires, embedded in the tablet surface along with various voltages or magnetic fields consequent to various coordinates. Intermediate positions in a cell can be interpolated too.
(b) Acoustic or Sonic (Radio-Wave) Tablet and Pointer: The sound of a spark on the tip of the stylus is picked up via strip microphones beside two edges of the tablet. By the arrival time of the sound pulse in the microphones, the perpendicular distances of the stylus tip by the two axes are identified. The acoustic process suffers from its inherent noisiness and also its susceptibility to interference from the other noise.
A combination of time-delay and electric pulses detection via a sensor in the stylus that is termed as Electro-acoustic Table is also accessible.
Flat Panel Displays - Hardware Primitives 1. Flat panel displays have now become more common. These include liquid crystal displays (LCD) and thin film electroluminescent disp
Draw the letters S, P, R or U of English alphabet using multiple Bézier curves. A complete code for plotting Bezier curves is given previously. There in the code, control point
List out the merits and demerits of DVST? The merits and demerits of direct view storage tubes [DVST] are as follows It has a flat screen Refreshing of screen is
As we already seen that the scaling process is mainly utilized to change the size of an object. The scale factors find out whether the scaling is a magnification as s>1 or a red
Summary of Graphic Primitives In this all section, we have illustrated the basic graphic primitives that are line, point and circle; we have also illustrated both practical an
Disadvantages with the Boundary Representation (i) It requires more storage than the corresponding half-space method. (ii) There is no guarantee that the object created is v
Sub Classes of Orthographic Projection There are three ordinary sub-classes of Orthographic (axonometric) projections as: 1) Isometric: The direction of projection makes
computer animation Note : This is to be noticed that computer animation can also be produced by changing camera parameters as its position, orientation and focal length, as w
Please guide if there is any easy steps tutorial available for digital painting in adobe photoshop.
find out points to the given control points
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