Force and Torque Inputs as Equations
The input fields for both torque and force can take equations as well as numerical values. These fields take equations in time, parameterized as 't', which can be used to create a wide-range of behavior.
Note: Since other
parameters are not currently accepted, you must write your equations in terms of t,
and not x, y , z, or other fields. Equations use the current simulation time for the
value of t. It may be necessary to offset the 't' in the force and Torque
controller. For example, if the force/torque has a Start time of 2 seconds, the
equation must use 't-2' if the desired force is zero at a time of 2
seconds.
The following table lists the available Math functions:
| Method | Description |
|---|---|
| abs(x) | Returns the absolute value of x |
| acos(x) | Returns the arccosine of x, in radians |
| asin(x) | Returns the arcsine of x, in radians |
| atan(x) | Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians |
| atan2(y, x) | Returns the arctangent of the quotient of its arguments |
| ceil(x) | Returns the value of x rounded up to its nearest integer |
| cos(x) | Returns the cosine of x (x is in radians) |
| exp(x) | Returns the value of Ex |
| floor(x) | Returns the value of x rounded down to its nearest integer |
| log(x) | Returns the natural logarithm (base E) of x |
| max(x, y, z, ..., n) | Returns the number with the highest value |
| min(x, y, z, ..., n) | Returns the number with the lowest value |
| pow(x, y) | Returns the value of x to the power of y |
| random() | Returns a random number between 0 and 1 |
| round(x) | Returns the value of x rounded to its nearest integer |
| sin(x) | Returns the sine of x (x is in radians) |
| sqrt(x) | Returns the square root of x |
| tan(x) | Returns the tangent of an angle |