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expressions [2016/02/28 15:29] Wearable Software created |
expressions [2021/02/17 21:40] (current) |
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+ | Use operators, mathematical functions or conditional statements to build a more dynamic watchface. | ||
+ | ===== Built-in operators ===== | ||
+ | Watchface Builder supports following operators: | ||
+ | * Addition: 2 + 2 | ||
+ | * Subtraction: | ||
+ | * Multiplication: | ||
+ | * Division: 2 / 2 | ||
+ | * Exponentation: | ||
+ | * Unary Minus,Plus (Sign Operators): +2 - (-2) | ||
+ | * Modulo: 2 % 2 | ||
+ | |||
+ | ===== Mathematical Functions ===== | ||
+ | You can also use mathematical functions for your expression. These expressions are supported: | ||
+ | |||
+ | * abs: absolute value | ||
+ | * acos: arc cosine | ||
+ | * asin: arc sine | ||
+ | * atan: arc tangent | ||
+ | * cbrt: cubic root | ||
+ | * ceil: nearest upper integer | ||
+ | * cos: cosine | ||
+ | * cosh: hyperbolic cosine | ||
+ | * exp: euler' | ||
+ | * floor: nearest lower integer | ||
+ | * log: logarithmus naturalis (base e) | ||
+ | * log10: logarithm (base 10) | ||
+ | * log2: logarithm (base 2) | ||
+ | * sin: sine | ||
+ | * sinh: hyperbolic sine | ||
+ | * sqrt: square root | ||
+ | * tan: tangent | ||
+ | * tanh: hyperbolic tangent | ||
+ | |||
+ | ==== Example ==== | ||
+ | < | ||
+ | Returns the integer value for the current temperature | ||
+ | |||
+ | ===== Conditional statements | ||
+ | You can use condition statements. The syntax is: | ||
+ | |||
+ | < | ||
+ | |||
+ | Following operators are supported for a condition: | ||
+ | * greater equal >= | ||
+ | * lower equal <= | ||
+ | * lower < | ||
+ | * greater > | ||
+ | * equals == | ||
+ | * not equals != | ||
+ | |||
+ | ==== Example ==== | ||
+ | For example if you want a blinking watchface layer set following expression on your opacity property. | ||
+ | |||
+ | < | ||
+ | |||
+ | Every time the seconds value changes and the value divided by two gives no rest, the layer will be displayed. |