vector application

MATHS
ASSIGNMENT
Made by:- Rajat shukla
Roll no:-13BTCSNR005

 A quantity possessing both magnitude and
direction, represented by an arrow the direction of
which indicates the direction of the quantity and the
length of which is proportional to the magnitude.
We can represent vectors in our games to
determine how to move entities in relation to each
other.

Magnitude
 The size, extent, or length of a Vector.
 Direction
 The position or orientation of a vector.
Vectors point into different directions in
space.

VECTOR ADDITION
 Two vectors can be added together to form a new
vector. To perform vector addition, add the x and y
coordinates.
 Syntax:
 ( v1.x + v2.x, v1.y + v2.y ) = ( v3.x, v3.y )
 Example:-
 v1 = (3,4)
 v2 = (4,6)
 v3 = (3+4,4+6) = (7,10)

VECTOR SUBTRACTION
 Two vectors can be subtracted from each other to
form a new vector. To perform vector subtraction,
subtract the x and y coordinates.
 Syntax
 ( v1.x - v2.x, v1.y - v2.y ) = ( v3.x, v3.y )
 Example
 v1 = (4,2)
 v2 = (3,1)
 v3 = (4-3,2-1) = (1,1)

UNIT VECTOR
 In mathematics, a unit vector can be computed for
any vector. A unit vector has the same direction as
its parent but its length is 1 (the unit length). The
unit vector is very important in video games.
 Syntax:
 Unit Vector = ( x / magnitude, y / magnitude )
 Example:
 v1 = (3,4)
 Magnitude = 5
 Unit Vector = (3/5, 4/5)

SCALAR VECTOR
 A vector can be multiplied or scaled by a number
(scalar) to grow or shrink its magnitude.
 Syntax
 Scaled Vector = ( x * num, y * num )
 Example
 number or scalar = 3
 v1 = (3,4)
 Scaled Vector = (3*3,4*3) = (9,12)

 From my research I have concluded that vectors
can be used in many field such as navigation of
aeroplane, ship and satelite,they are also used in
gene cloning ,they are widely used in mechanics,
physics and computer engineering.
 They are also used in graphics by creating a
smaller and adding them to get an real object
 I am going to tell you about how vectors is used in
today's 2D and 3D gaming technology.

VECTORS IN GAMING
 In games, vectors are used to store positions, directions, and
velocities. Here are some 2-Dimensional examples:
 The position vector indicates that the man is standing two
meters east of the origin, and one meter north. The velocity
vector shows that in one minute, the plane moves three
kilometers up, and two to the left. The direction vector tells us
that the pistol is pointing to the right.

 Let's consider the example of Mario jumping. He starts
at position (0,0). As he starts the jump, his velocity is
(1,3) -- he is moving upwards quickly, but also to the
right. His acceleration throughout is (0,-1), because
gravity is pulling him downwards. Here is what his jump
looks like over the course of seven more frames. The
black text specifies his velocity for each frame.
 We can walk through the first couple frames by hand to
see how this works.
 For the first frame, we add his velocity (1,3) to his
position (0,0) to get his new position (1,3). Then, we add
his acceleration (0,-1) to his velocity (1,3) to get his new
velocity (1,2).

We do it again for the second frame. We add his velocity (1,2) to his
position (1,3) to get (2,5). Then, we add his acceleration (0,-1) to his
velocity (1,2) to get (1,1).

VECTOR SUBTRACTION
 Subtraction works in the same way as addition --
subtracting one component at a time. Vector
subtraction is useful for getting a vector that points
from one position to another. For example, let's say
the player is standing at (1,2) with a laser rifle, and
an enemy robot is at (4,3). To get the vector that the
laser must travel to hit the robot, you can subtract
the player's position from the robot's position. This
gives us:
 (4,3)-(1,2) = (4-1, 3-2) = (3,1).

If the player P is at (3,3) and there is an
explosion E at (1,2), we need to find the
distance between them to see how much
damage the player takes. This is easy to
find by combining two tools we have already
gone over: subtraction and length. We
subtract P-E to get the vector between
them, and then find the length of this vector
to get the distance between them. The order
doesn't matter here, |E-P| will give us the
same result.
 Distance = |P-E| = |(3,3)-(1,2)| = |(2,1)| =

 Vector graphics are based on vectors (also called paths or
strokes), which lead through locations called control points or
nodes. Each of these points has a definite position on the x
and y axes of the work plane and determines the direction of
the path; further, each path may be assigned a stroke color,
shape, thickness, and fill. These properties don't increase the
size of vector graphics files in a substantial manner, as all
information resides in the document's structure, which
describes solely how the vector should be drawn.

3D GRAPHICS
 The basic idea of 3D graphics is to turn a mathematical
description of a world into a picture of what that world would
look like to someone inside the world.
 Here is a much more complicated example, using thousands
of triangles. The first picture shows the triangles used, the
second picture is what it looks like with colours put in.

 Refrence sites and books
 GE Hay, Vector and Tensor Analysis
 B Hoffmann, About Vectors
 http://www.gamasutra.com
 http://www.gamedev.net
 http://www-cs-students.
stanford.edu/~amitp/gameprog.html
 http://www.cc.gatech.edu/gvu/multimedia/nsfmmedi
a/cware/graphics/toc.html
www.GDCONF.com

vector application

More Related Content

What's hot (20)

Similar to vector application (20)

Recently uploaded (20)

vector application