This element creates a curve defined by a mathematical formula (y=f(x)).
See the curve element attributes. The FORMULA_PARAM attribute does not have the persistent attribute since its value is computed with a formula.
| Name | Value Type | Default Value | Description | Comment | V. |
|---|---|---|---|---|---|
|
formula |
Empty. |
Mathematical formula for the curve. |
The formula can reference any parameter, curve or surface available in the skin. |
1.6 |
|
|
variable |
string |
x |
name of the "x" variable in the formula. |
You can customize the name of the traditional "x" variable in y=f(x) formula so that it becomes y=f(variable) |
1.6 |
The code below creates a curve ("curve") that can be displayed on a graph. The name of the variable used in the formula is customized ("z").
<FORMULA_CURVE id="curve" formula="cos(z)" variable="z"/>