Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Projections - Viewing Transformation
Specified 3-D object in a space, Projection can be explained as a mapping of 3-D object into 2-D viewing screen. Now, 2-D screen is termed as Plane of projection or view plane that constitutes the display surface. The mapping is resolved by projection rays termed as the projectors. Geometric projections of objects are formed via the intersection of lines termed as projectors with a plane termed as plane of projection or view plane. Projectors are lines from an arbitrary point, termed as the centre of projection i.e. COP, by each point in an object. Following figure 1 demonstrates a mapping of point P(x,y,z) on its image P′(x',y',z') in the view plane.
Figure: 1
If the COP that is center of projection is located at finite point in the 3-space, the effect is a perspective projection. If the COP i.e. center of projection is located at infinity, all the projectors are parallel and the consequence is a parallel projection. Following figure 2(a)-(b) demonstrates the diversity between perspective and parallel projections. In following figure 2(a): ABCD is projected to A'B'C'D' on the plane of projection and O is a COP. In the condition of parallel projection the rays by an object converge at infinity, the rays from the object turn into parallel and will have a direction termed as "direction of projection".
Figure 2(b): Parallel projection
Graphic File Compression Formats Web graphics are by requirement compressed due to the bandwidth issues surrounding networked delivery of information and since image files inc
Positive Accelerations - Computer Animation So as to incorporate increasing speed in an animation the time spacing among the frames should increase, hence greater change in th
Curves and Surfaces - Modeling and Rendering We have studied the method of drawing curves in diverse coordinate systems. Also we got the concept that it is the revolution of
What is run length encoding? Run length encoding is a compression method used to store the intensity values in the frame buffer, which keeps each scan line as a set of intege
Question (a) Define the term Multimedia. (b) Describe any four important tools you know about for a virtual campus. (c) Following our discussion in our lecture list an
Traditional Animation Techniques - Computer Animation Before the advent of computer animation, each animation was done via hand that involves an enormous amount of work. You
Question 1: (a) How can you select and manipulate individual objects in a group? (b) How do you resize an object? Explain how you determine the point from which the object r
Define clipping and covering (exterior clipping)? Clipping is the process of cutting a graphics display to neatly fit a predefined graphics region or the view port. This is
Explain the term- Control Traffic lights (controlling the sequence of lights to maintain optimum traffic flow), chemical and nuclear plants (opening and closing valves, safety
What is orthographic parallel projection? When the direction of the projection is normal (perpendicular) to the view plane then the projection is called as orthographic paral
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd