Differences

This shows you the differences between two versions of the page.

--- tools:oscillator [2020/02/18 17:13] – [Output Shift] lightwolf
+++ tools:oscillator [2021/01/02 14:22] (current) – [Gallery] lightwolf
@@ Line 1: / Line 1: @@
-====== Oscillator Node (under construction) ======
+====== Oscillator Node ======
-{{ :tools:pasted:20200218-164551.png}}
+{{ :tools:pasted:20200227-122251.png}}
 The Oscillator nodes provides multiple waveforms as a scalar, including options to fade them in our out.
 It can be used to deform meshes using a position or distance as an input, but also to influence an animation by using time as an input.
+It is also available as a Channel Modifier.
 ===== Controls =====
@@ Line 19: / Line 21: @@
 ==== Waveform ====
-{{ :tools:pasted:20200218-164638.png}}
+{{:tools:pasted:20200227-122608.png}}
 Multiple waveforms are available:
-  * Sine
+  * **Sine** Sine wave.
-  * Cosine
+  * **Cosine** Cosine wave (essentially a shifted sine wave).
-  * Pulse
+  * **Pulse** A value alternating between -1 and 1.
-  * Triangle
+  * **Triangle** A triangle wave.
-  * Sawtooth
+  * **Sawtooth** A sawtooth wave.
-  * Noise
+  * **Noise** Value noise.
-  * Sinc Function
+  * **Sinc Function** This is a sine wave that is dampened.
-  * Polynomial Impulse
+  * **Polynomial Impulse** A single impulse from 0 to 1 and back that can be shaped using the Curve Parameter
-  * Custom
+  * **Bounce** This is the waveform of a bounce, the Curve Parameter controls the bounciness, the amount of energy left for the bounce after every ground contact.
+  * **Custom** Uses the **Input** node input as well as the **Custom Position** input. The Input values is affected by the scale and shift values and the fade in/out are applied depending on the **Custom Position** input.
@@ Line 42: / Line 45: @@
 It controls the spread of the impulse, values above 1.0 are recommended.
 ==== Input ====
@@ Line 60: / Line 64: @@
 The output shift is added to the output scalar after it has been scaled.
 ==== Fade In / Fade Out ====
+These two tabs control the fade in/out of the waveform.
+Either of these need to be manually enabled. If they are enabled, the node will add additional nodal inputs. These are removed again if the fade is disabled.
+The start and end values are unit-less and depend on the input.
+If the input is frames, it's frames. If it's time it's seconds, if it's a distance it's metres and so on.
 === Start ===
+The starting value where the fade starts.
 === End ===
-=== Start Amplitude ===
-=== End Amplitude ===
-=== Gain ===
-=== Bias ===
+The end value for the fade.
+=== Start Amplitude ===
+The starting amplitude, or scale, for the fade.
+=== End Amplitude ===
+The ending amplitude for the fade.
+=== Gain ===
+This allows you to adjust the shape of the fade. Gain acts in a way similar to a gamma curve.
+The default is 0.5 which corresponds to a linear shape.
+=== Bias ===
+This also adjust the shape of the fade, a lower bias will shift it to the left, a higher bias to the right.
+The default is 0.5 which corresponds to a linear shape.
+====== Oscillator Channel Modifier ======
+{{ :tools:pasted:20200227-122323.png}}
+The Oscillator is also available as a channel modifier. It is almost identical with the following caveats/exceptions:
+  * The input value is always the current time
+  * There is no custom waveform
+  * The result can replace or be added or multiplied with the value in the underlying envelope.
+----
+====== Gallery ======
+{{:tools:driver2.mp4}}
+All motions courtesy of multiple Oscillator nodes - by https://twitter.com/markWarnerTV
 ----