IC Python API:RLPy RVector4
- Main article: Modules.
- Last modified: 04/7/2020
Description
This class represent a 4D vector (x, y, z, w). This class provides access to RLPy's internal 4D vector math library allowing 4D vectors to be handled easily, and in a manner compatible with internal RLPy data structures. It also supports operators and provides some convenient constants:
| Constant | Description |
|---|---|
| RVector4.ZERO | 4D zero vector: (0, 0, 0, 0) |
| RVector4.UNIT_X | 4D x unit vector: (1, 0, 0, 0) |
| RVector4.UNIT_Y | 4D y unit vector: (0, 1, 0, 0) |
| RVector4.UNIT_Z | 4D z unit vector: (0, 0, 1, 0) |
| RVector4.UNIT_W | 4D w unit vector: (0, 0, 0, 1) |
| RVector4.UNIT_XYZW | 4D vector: (1, 1, 1, 1) |
Constructor & Destructor
__init__ ( )
Initialize a new 4D vector object that is zeroed out: (0, 0, 0, 0).
a = RLPy.RVector4()
__init__ ( a, b, c, d )
Initialize a new 4D vector object as a 4D vector: (x, y, z, w).
Parameters
- a [IN] A numerical value for x coordinate - float or int
- b [IN] A numerical value for y coordinate - float or int
- c [IN] A numerical value for z coordinate - float or int
- d [IN] A numerical value for w coordinate - float or int
a = RLPy.RVector4(1, 2, 3, 4)
__init__ ( *args )
Initialize a new 4D vector object with another 4D vector object: args. This new 4D vector object has the same value as *args.
Parameters
- args [IN] a 4D vector object - RVector4
a = RLPy.RVector4(1, 2, 3, 4)
b = RLPy.RVector4(a)
Operators
=
The "equal to" operator.
a = RLPy.RVector4(1, 2, 3, 4)
b = a
print(a == b) #True
!=
The "not equal to" operator.
a = RLPy.RVector4()
b = RLPy.RVector4(1, 2, 3, 4)
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.
a = RLPy.RVector4(0, 1, 5, 2)
b = RLPy.RVector4(0, 1, 5, 3)
c = RLPy.RVector4(1, 0, 1, 0)
d = RLPy.RVector4(0, 1, 5, 2)
print(a < b) # True
print(b < c) # True
print('b < c')
if a < d: # False
print('a < d')
>
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.
a = RLPy.RVector4(0, 1, 5, 2)
b = RLPy.RVector4(0, 1, 5, 3)
c = RLPy.RVector4(1, 0, 1, 0)
d = RLPy.RVector4(0, 1, 5, 2)
if b >a: # True
print('b >a')
if c >b: # True
print('c >b')
if a >d: # True
print('a >d')
<=
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.
a = RLPy.RVector4(0, 1, 5, 2)
b = RLPy.RVector4(0, 1, 5, 3)
c = RLPy.RVector4(1, 0, 1, 0)
d = RLPy.RVector4(0, 1, 5, 2)
if a<= b: # True
print('a<= b')
if b<= c: # True
print('b<= c')
if a<= d: # True
print('a<= d')
>=
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.
a = RLPy.RVector4(0, 1, 5, 2)
b = RLPy.RVector4(0, 1, 5, 3)
c = RLPy.RVector4(1, 0, 1, 0)
d = RLPy.RVector4(0, 1, 5, 2)
if b >= a: # True
print('b >= a')
if c >= b: # True
print('c >= b')
if a >= d: # False
print('a >= d')
+
The "addition" operator. Perform a 4D vector addition.
a = RLPy.RVector4(0, 1, 2, 3)
b = RLPy.RVector4(1, 2, 3, 4)
c = a + b
print(str(c.x) + ', ' + str(c.y) + ', ' + str(c.z) + ', ' + str(c.w)) # 1.0, 3.0, 5.0, 7.0
-
The "subtraction" operator. Perform a 4D vector subtraction.
a = RLPy.RVector4(0, 1, 2, 3)
b = RLPy.RVector4(3, 2, 1, 0)
c = b - a
print(str(c.x) + ', ' + str(c.y) + ', ' + str(c.z) + ', ' + str(c.w)) # 3.0, 1.0, -1.0, -3.0
*
The "multiplication" operator. Perform a scalar multiplication when the second operand is an integer or float. If the second operand is another 4D vector, then the corresponding elements are multiplied.
a = RLPy.RVector4(1, 2, 3, 4)
b = a * 2
c = a * a
print(str(b.x) + ', ' + str(b.y) + ', ' + str(b.z) + ', ' + str(b.w)) # 2.0, 4.0, 6.0, 8.0
print(str(c.x) + ', ' + str(c.y) + ', ' + str(c.z) + ', ' + str(c.w)) # 1.0, 4.0, 9.0, 16.0
/
The "division" operator. Perform a scalar division when the second operand is an integer or float. If the second operand is another 4D vector, then the corresponding elements are divided.
a = RLPy.RVector4(1, 2, 3, 4)
b = a / 2
c = RLPy.RVector4(2, 2, 10, 2)
d = a / c
print(str(b.x) + ', ' + str(b.y) + ', ' + str(b.z) + ', ' + str(b.w)) # 0.5, 1.0, 1.5, 2.0
print(str(d.x) + ', ' + str(d.y) + ', ' + str(d.z) + ', ' + str(d.w)) # 0.5, 1.0, 0.3, 2.0
-
The "unary minus" operator. Inverse the sign of each element.
a = RLPy.RVector4(1, 2, 3, 4)
b = -a
print(str(b.x) + ', ' + str(b.y) + ', ' + str(b.z) + ', ' + str(b.w)) # -1.0, -2.0, -3.0, -4.0
+=
The "addition assignment" operator.
a = RLPy.RVector4(0, 1, 2, 3)
b = RLPy.RVector4(1, 2, 3, 4)
a += b
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # 1.0, 3.0, 5.0, 7.0
-=
The "subtraction assignment" operator.
a = RLPy.RVector4(0, 1, 4, 5)
b = RLPy.RVector4(1, 2, 3, 1)
a -= b
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # -1.0, -1.0, 1.0, 4.0
*=
The "multiplication assignment" operator. 計算方式請參考 * 運算子.
a = RLPy.RVector4(1, 2, 3, 4)
a *= 2
b = RLPy.RVector4(1, 2, 3, 4)
c = RLPy.RVector4(2, 3, 4, 5)
b *= c
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # 2.0, 4.0, 6.0, 8.0
print(str(b.x) + ', ' + str(b.y) + ', ' + str(b.z) + ', ' + str(b.w)) # 2.0, 6.0, 12.0, 20.0
/=
The "division assignment" operator. 計算方式請參考 / 運算子.
a = RLPy.RVector4(1, 2, 3, 4)
a /= 2
b = RLPy.RVector4(1, 2, 3, 4)
c = RLPy.RVector4(2, 4, 2, 2)
b /= c
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # 0.5, 1.0, 1.5, 2.0
print(str(b.x) + ', ' + str(b.y) + ', ' + str(b.z) + ', ' + str(b.w)) # 0.5, 0.5, 1.5, 2.0
Member Functions
Dot (self, vV)
Calculate dot product with the given vector.
a = RLPy.RVector4(1, 2, 3, 4)
b = RLPy.RVector4(1, 2, 3, 4)
print(a.Dot(b)) #30.0
Parameters
vV [IN] The vector to compute dot product - RVector4
Returns
Returns the value of the dot product - float
Inverse (self)
Invert every element of this 4D vector.
a = RLPy.RVector4(0.5, 2, 4, 1)
b = a.Inverse()
print(str(b.x) + ', ' + str(b.y) + ', ' + str(b.z) + ', ' + str(b.w)) # 2.0, 0.5, 0.25, 1.0
Returns
Returns the inversed vector - RVector4
Length (self)
Get the length (magnitude) of this 4D vector.
Returns
4D vector magnitude - float
a = RLPy.RVector4(1, 1, 1, 1)
print(a.Length()) # 2.0
Normalize (self)
Normalize this 4D vector.
Returns
Length of this 4D vector before normalization - float
SetW
Set the value of the w-axis.
a = RLPy.RVector4(1, 1, 1, 1)
print(a.Normalize()) # 2.0
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # 0.5, 0.5, 0.5, 0.5
Parameters
tW [IN] the value of the w-axis - float
a = RLPy.RVector4(1, 1, 1, 1)
a.SetW(10)
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # 1.0, 1.0, 1.0, 10.0
SetX (self, tX)
Set the value of the x-axis.
Parameters
- tX [IN] the value of the x-axis - float
a = RLPy.RVector4(1, 1, 1, 1)
a.SetX(10)
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # 10.0, 1.0, 1.0, 1.0
SetY (self, tY)
Set the value of the y-axis.
Parameters
- tY [IN] the value of the y-axis - float
a = RLPy.RVector4(1, 1, 1, 1)
a.SetY(10)
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # 1.0, 10.0, 1.0, 1.0
SetZ (self, tZ)
Set the value of the z-axis.
Parameters
- tZ [IN] the value of the z-axis - float
a = RLPy.RVector4(1, 1, 1, 1)
a.SetZ(10)
print(str(a.x) + ', ' + str(a.y) + ', ' + str(a.z) + ', ' + str(a.w)) # 1.0, 1.0, 10.0, 1.0
SquaredLength (self)
Squared length of this 4D vector.
Returns
- Returns the squared length of this 4D vector - float
a = RLPy.RVector4(1, 1, 1, 1)
print(a.SquaredLength()) # 4.0
XY (self)
Get the first 2 elements of this 4D vector (X, Y) as a 2D vector.
Returns
- Returns a 2D vector - RVector2
a = RLPy.RVector4(1, 2, 3, 4)
b = a.XY()
print(str(b.x) + ', ' + str(b.y)) # 1.0, 2.0
XYZ (self)
Get the first 3 elements of this 4D vector (X, Y, Z) as a 3D vector.
Returns
- Returns a 3D vector - RVector3
a = RLPy.RVector4(1, 2, 3, 4)
b = a.XYZ()
print(str(b.x) + ', ' + str(b.y) + ', ' + str(b.z)) # 1.0, 2.0, 3.0
