Difference between revisions of "IC Python API:RLPy RVector2"
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=== __init__ === | === __init__ === | ||
| − | Initialize a new | + | Initialize a new RVector2 object as a zeroed 2D vector: (0, 0). |
<syntaxhighlight lang="python"> | <syntaxhighlight lang="python"> | ||
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=== __init__( self, x, y ) === | === __init__( self, x, y ) === | ||
| − | Initialize a new [[IC_Python_API:RLPy_RVector2|RVector2]]object as a 2D vector: (x, y). | + | Initialize a new [[IC_Python_API:RLPy_RVector2|RVector2]] object as a 2D vector: (x, y). |
==== Parameters ==== | ==== Parameters ==== | ||
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=== __init__( self, args ) === | === __init__( self, args ) === | ||
| − | Initialize a new [[IC_Python_API:RLPy_RVector2|RVector2]]object with another [[IC_Python_API:RLPy_RVector2|RVector2]]object: args. This new [[IC_Python_API:RLPy_RVector2|RVector2]]object has the same value as args. | + | Initialize a new [[IC_Python_API:RLPy_RVector2|RVector2]] object with another [[IC_Python_API:RLPy_RVector2|RVector2]] object: args. This new [[IC_Python_API:RLPy_RVector2|RVector2]] object has the same value as args. |
<syntaxhighlight lang="python"> | <syntaxhighlight lang="python"> | ||
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</syntaxhighlight> | </syntaxhighlight> | ||
| − | === SetY ( self, tY )=== | + | === SetY ( self, tY ) === |
Set the value of the y-axis on this 2D vector. | Set the value of the y-axis on this 2D vector. | ||
Latest revision as of 19:25, 13 April 2020
- Main article: Modules.
- Last modified: 04/13/2020
Description
This class represents a 2D vector (x, y). This class provides access to RLPy's internal 2D vector math library allowing 2D vectors to be handled easily, in a manner compatible with internal RLPy data structures. It also supports operators and provides some constants for your convenience:
| Constant | Description |
|---|---|
| RVector2.ZERO | 2D zero vector2: (0, 0) |
| RVector2.UNIT_X | 2D x unit vector2: (1, 0) |
| RVector2.UNIT_Y | 2D y unit vector2: (0, 1) |
| RVector2.UNIT_XY | 2D unit vector2: (1, 1) |
Constructors & Destructors
__init__
Initialize a new RVector2 object as a zeroed 2D vector: (0, 0).
a = RLPy.RVector2()
__init__( self, x, y )
Initialize a new RVector2 object as a 2D vector: (x, y).
Parameters
- x [IN] a numerical value for x coordinate - float / int
- y [IN] a numerical value for y coordinate - float / int
a = RLPy.RVector2(1, 2)
__init__( self, args )
Initialize a new RVector2 object with another RVector2 object: args. This new RVector2 object has the same value as args.
a = RLPy.RVector2(1, 2)
b = RLPy.RVector2(a)
Operators
==
The "equal to" operator.
See Also: !=
a = RLPy.RVector2(1, 2)
b = a
print(a == b) #True
!=
The "not equal to" operator.
See Also: ==
a = RLPy.RVector2()
b = RLPy.RVector2(1, 2)
print(a != b) #True
<
The "less than" operator. Similar to string comparison: Returns True upon the first match that is less than, and False if it is greater than. If the current comparison is equal, continue onto the next element. If all elements are equal then return False.
See Also: <=
a = RLPy.RVector2(0, 0)
b = RLPy.RVector2(0, 1)
c = RLPy.RVector2(1, 0)
d = RLPy.RVector2(0, 0)
print(a< b) #True
print(b< c) #True
print(a< d) #False
>
The "greater than" operator. Similar to string comparison: Returns True upon the first match that is greater than, and False if it is less than. If the current comparison is equal, continue onto the next element. If all elements are equal then return False.
See Also: >=
a = RLPy.RVector2(0, 0)
b = RLPy.RVector2(0, 1)
c = RLPy.RVector2(1, 0)
d = RLPy.RVector2(0, 0)
print(b >a) #True
print(c >b) #True
print(d >a) #False
<=
The "less than or equal" operator. Similar to string comparison: Returns True upon the first match that is less than, and False if it is greater than. If the current comparison is equal, continue onto the next element. If all elements are equal then return True.
See Also: <
a = RLPy.RVector2(0, 0)
b = RLPy.RVector2(0, 1)
c = RLPy.RVector2(1, 0)
d = RLPy.RVector2(0, 0)
print(a<= b) #True
print(b<= c) #True
print(a<= d) #True
>=
The "greater than or equal" operator. Similar to string comparison: Returns True upon the first match that is greater than, and False if it is less than. If the current comparison is equal, continue onto the next element. If all elements are equal then return True.
See Also: >
a = RLPy.RVector2(0, 0)
b = RLPy.RVector2(0, 1)
c = RLPy.RVector2(1, 0)
d = RLPy.RVector2(0, 0)
print(b >= a) #True
print(c >= b) #True
print(d >= a) #True
+
The "addition" operator. Perform 2D vector addition.
See Also: +=
a = RLPy.RVector2(0, 1)
b = RLPy.RVector2(1, 2)
c = a + b
print(str(c.x) + ', ' + str(c.y)) # 1.0, 3.0
-
The "subtraction" operator. Perform 2D vector subtraction.
See Also: -=
a = RLPy.RVector2(0, 1)
b = RLPy.RVector2(1, 3)
c = b - a
print(str(c.x) + ', ' + str(c.y)) # 1.0, 2.0
*
The "multiplication" operator. Perform a scalar multiplication when the second operand is an integer or float. If the second operand is another 2D vector, then the corresponding elements are multiplied.
See Also: *=
a = RLPy.RVector2(1, 2)
b = a * 2
c = RLPy.RVector2(2, 3)
d = a * c
print(str(b.x) + ', ' + str(b.y)) # 2.0, 4.0
print(str(d.x) + ', ' + str(d.y)) # 2.0, 6.0
/
The "division" operator. Perform a scalar division when the second operand is an integer or float. If the second operand is another 2D vector, then the corresponding elements are divided.
See Also: /=
a = RLPy.RVector2(1, 2)
b = a / 2
c = RLPy.RVector2(2, 3)
d = a / c
print(str(b.x) + ', ' + str(b.y)) # 0.5, 1.0
print(str(d.x) + ', ' + str(d.y)) # 0.5, 0.6666666865348816
-
The "unary minus" operator. Inverse the sign of each element.
a = RLPy.RVector2(1, 2)
b = -a
print(str(b.x) + ', ' + str(b.y)) # -1.0, -2.0
+=
The "addition assignment" operator.
See Also: +
a = RLPy.RVector2(0, 1)
b = RLPy.RVector2(1, 2)
a += b
print(str(a.x) + ', ' + str(a.y)) # 1.0, 3.0
-=
The "subtraction assignment" operator.
See Also: -
a = RLPy.RVector2(0, 1)
b = RLPy.RVector2(1, 2)
a -= b
print(str(a.x) + ', ' + str(a.y)) # -1.0, -1.0
*=
The "multiplication assignment" operator. For the calculation method, refer to the * operator.
See Also: *
a = RLPy.RVector2(1, 2)
a *= 2
b = RLPy.RVector2(1, 2)
c = RLPy.RVector2(2, 3)
b *= c
print(str(a.x) + ', ' + str(a.y)) # 2.0, 4.0
print(str(b.x) + ', ' + str(b.y)) # 2.0, 6.0
/=
The "division assignment" operator. For the calculation method, refer to the / operator.
See Also: /
a = RLPy.RVector2(1, 2)
a /= 2
b = RLPy.RVector2(1, 2)
c = RLPy.RVector2(2, 3)
b /= c
print(str(a.x) + ', ' + str(a.y)) # 0.5, 1.0
print(str(b.x) + ', ' + str(b.y)) # 0.5, 0.6666666865348816
Member Functions
AddWithWeight ( self, vSrc, fWeight )
Add this and another 2D vector with weighting.
Parameters
- vSrc [IN] The 2D vector to add - RVector2
- fWeight [IN] The weight value - float
a = RLPy.RVector2(0, 1)
b = RLPy.RVector2(1, 2)
a.AddWithWeight(b, 2)
print(str(a.x) + ', ' + str(a.y)) # 2.0, 5.0
Dot ( self, vV )
Calculate dot production of the two vectors.
Parameters
- vV [IN] Another 2D vector to compute dot product - RVector2
Returns
- The value of the dot product - float
a = RLPy.RVector2(1, 2)
dot = a.Dot( RLPy.RVector2(3, 5) )
print(dot) #13.0
Inverse ( self )
Return the inverse of this 2D vector by inverting its x, y elements.
Returns
- A new 2D vector that is the inverse of this 2D vector - RVector2
a = RLPy.RVector2(0.5, 4)
b = a.Inverse()
print(str(b.x) + ', ' + str(b.y)) # 2.0, 0.25
Length ( self )
Get the length of this 2D vector.
Returns
- The length of this 2D vector - float
a = RLPy.RVector2(3, 4)
print( str(a.Length()) ) # 5.0
Normalize ( self )
Normalize this 2D vector.
Returns
- The length of this 2D vector before normalization - float
a = RLPy.RVector2(1, 1)
b = a.Normalize()
print(str(a.x) + ', ' + str(a.y)) # 0.7071067690849304, 0.7071067690849304
print(b) # 1.4142135381698608
SetX ( self, tX )
Set the value of the x-axis on this 2D vector.
Parameters
- tX [IN] the value of the x-axis - float
a = RLPy.RVector2(1, 1)
a.SetX(10)
print(str(a.x) + ', ' + str(a.y)) # 10.0, 1.0
SetY ( self, tY )
Set the value of the y-axis on this 2D vector.
Parameters
- tY [IN] The value of the y-axis.
a = RLPy.RVector2(1, 1)
a.SetY(10)
print(str(a.x) + ', ' + str(a.y)) # 1.0, 10.0
SquaredLength ( self )
Get the squared length of this 2D vector.
Returns
- The squared length of this 2D vector - float
a = RLPy.RVector2(1, 1)
print(a.SquaredLength()) # 2.0
