AviSynth Syntax - Trigonometry functions¶
Relationships involving lengths and angles of triangles.
Sin¶
Sin(float)
Returns the sine of the argument (assumes it is radians).
Examples:
Sin(Pi()/4) = 0.707
Sin(Pi()/2) = 1.0
Cos¶
Cos(float)
Returns the cosine of the argument (assumes it is radians).
Examples:
Cos(Pi()/4) = 0.707
Cos(Pi()/2) = 0.0
Tan¶
Tan(float)
Returns the tangent of the argument (assumes it is radians).
Examples:
Tan(Pi()/4) = 1.0
Tan(Pi()/2) = not defined
32 bit IEEE floats do not have sufficient resolution to exactly represent pi/2 so AviSynth returns a large positive number for the value slightly less than pi/2 and a large negative value for the next possible value which is slightly greater than pi/2.
Asin¶
Asin(float)
Returns the inverse of the sine of the argument (output is radians).
Examples:
Asin(0.707) = 0.7852471634 (~ Pi/4)
Asin(1.0) = 1.570796327 (~ Pi/2)
Acos¶
Acos(float)
Returns the inverse of the cosine of the argument (output is in radians).
Examples:
Acos(0.707) = 0.7852471634 (~ Pi/4)
Acos(0.0) = 1.570796327 (~ Pi/2)
Atan¶
Atan(float)
Returns the inverse of the tangent of the argument (output is in radians).
Examples:
Atan(0.707) = 0.6154085176
Atan(1.0) = 0.7853981634 (~ Pi/4)
Atan2¶
Atan2(float, float)
Returns the angle between the positive x-axis of a plane and the point given by the coordinates (x, y) on it (output is in radians). See the wikipedia article on Atan2 for more information. y is the first argument and x is the second argument.
Examples:
Atan2(1.0, 0) = 1.570796327 (~ Pi/2)
Atan2(1.0, 1.0) = 0.7852471634 (~ Pi/4)
Atan2(-1.0, -1.0) = -2.356194490 (~ -3Pi/4)
Sinh¶
Sinh(float)
Returns the hyperbolic sine of the argument. See wikipedia for more information.
Examples:
Sinh(2.0) = 3.626860408
Cosh¶
Cosh(float)
Returns the hyperbolic cosine of the argument.
Examples:
Cosh(2.0) = 3.762195691
Tanh¶
Tanh(float)
Returns the hyperbolic tangent of the argument.
Examples:
Tanh(2.0) = 0.9640275801
Back to Internal functions.
$Date: 2024/01/15 16:16:00 $
