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differentiate among interpolation spline and approximation spline when the spline curve passes by all the control points then it is known as
what are the important properties of bezier curve it requires only four control points it always passes by the first and last control points
what are the different ways of specifying spline curve using a set of boundary conditions that are imposed on the spline using the state matrix
what is the use of control points spline curve can be specified by giving a set of coordinate positions known as control points which shows the
what is a spline to produce a smooth curve by a designed set of points a flexible strip called spline is used like spline curve can be
define b-spline curve a b-spline curve is a set of piecewise usually cubic polynomial segments that pass close to a set of control points though
what are the advantages of rendering by patch splitting i it is fast-especially on workstations with a hardware polygon-rendering pipeline ii
what are the advantages of rendering polygons by scan line method i the max and min values of the scan were simply found ii the intersection of
write short notes on rendering bi-cubic surface patches of constant u and v method the simple way is to draw the iso-parmetric lines of the
what is surface patch a single surface element can be explained as the surface traced out as two parameters u v take all possible values between 0
what is polygon mesh polygon mesh is a method to show the polygon when the object surfaces are tiled it is more convenient to state the surface
what are the various representation schemes used in three dimensional objects boundary representation b-res - explain the 3 dimensional objects as
list out the various text clipping all-or-none string clipping -if all of the string is inside a clip window keep it or else discards all-or-none
distinguish between bitblt and pixblt raster functions that manipulate rectangular pixel arrays are usually referred to as raster ops moving a
define affine transformation a coordinate transformation of the form x axxx axyybx y ayxxayy yby is known as a two-dimensional affine
what is reflection and clippingthe reflection is actually the transformation that makes a mirror image of an object for this use some angles and
what is scaling and shearingthe scaling transformations alters the shape of an object and can be carried out by multiplying every vertex xy by
what is rotation a 2-d rotation is completed by repositioning the coordinates with a circular path in the x-y plane by making an angle with the
what is translation translation is the process of changing the position of an object in a straight-line path from one coordinate location to
write short notes on active and passive transformations in the active transformation the points x and x represent different coordinates of the
what is transformation transformation is the process of introducing changes in the shape size and orientation of the object using scaling rotation
what is fixed point scaling the location of a scaled object can be controlled by a position known as the fixed point that is to remain unchanged
distinguish between uniform scaling and differential scaling when the scaling factors sx and sy are assigned to the similar value a uniform
what is the need of homogeneous coordinates to perform more than one transformation at a time use homogeneous coordinates or matrixes they
define clipping and covering exterior clippingclipping is the process of cutting a graphics display to neatly fit a predefined graphics region or the