SpeedSix.Aurora2 (Discreet Box19)
PURPOSE
Along the line defined by the control points a band of light points is created blending from the start colour to the end colour. This set of points is then forced through some turbulence to swirl it around. For each Swirl Repeat a different pattern, or family of disturbed points is created and drawn. As time elapses, the XYZ Speed controls the corresponding rate of movement.
Add in Suction and the light points are dragged towards the center of the zone of suction and thrown out again. This will stretch the streamers of light and add another dimension to the visual effect. Twirling rotates the movement around the suction centre.
The Lighting will intensify the brightness of the light points within the zone affected. Switching on the Track Light will automatically position the light source on the control line and this bright spot will then move along this line by a percentage of its length.
INPUT CLIPS
1: Sky
: The Aurora could be drawn over this clip or over a plain background colour.
2: Matte
: Aurora could be drawn within this clip or modulated by this clip.
Aurora2 CONTROL PAGE
Swirl Magnitude X (Number Min: 0.0, Max: 500.0, Default: 132.0)
Swirl Magnitude Y (Number Min: 0.0, Max: 500.0, Default: 168.0)
XY Magnitude of swirly thing drawn. The higher the values the further the light points are thrown out from the base line.
Swirl Brightness (Number Min: 0.0, Max: 200.0, Default: 66.0)
Brightness of the of swirly thing drawn
Swirl Repeat (Number Min: 1, Max: 16, Default: 3)
How many families of disturbed light points to draw.
Swirl Speed X (Number Min: -100.0, Max: 100.0, Default: 1.0)
Swirl Speed Y (Number Min: -100.0, Max: 100.0, Default: 1.0)
Swirl Speed Z (Number Min: -100.0, Max: 100.0, Default: 1.0)
X/Y/Z Speed of movement in each direction of the swirly thing drawn.
Swirl Density X (Number Min: 0.0, Max: 200.0, Default: 7.0)
Swirl Density Y (Number Min: 0.0, Max: 200.0, Default: 7.0)
Swirl Density Z (Number Min: 0.0, Max: 10.0, Default: 0.5)
X/Y/Z density of the turbulence through which the light points pass. The higher the value the greater the detail in the turbulence pattern.
Note: the Z density has little visual effect as only a slice through the turbulence is drawn.
Use Sky Colour (Checkbox Default: On)
Use the selected flat colour instead of the background clip.
Sky Colour (Colour Box Default: R: 20, G: 16320, B: 20, A: 35535)
Sky colour.
Use Matte (Checkbox Default: Off)
The luminance of this clip is used to modulate the whole effect. Where white it is drawn at full intensity; black the effect will not be seen.
Invert Matte (Checkbox Default: Off)
Reverse the application of Black to White
Display (List Box Options: Key | Turb | Final, Default: Final)
Key: draws the base line, useful for checking things but it disables many of the controls as they will no longer have any effect on the viewed result.
Turb: draws the disturbed light points, unaffected by the lighting.
Final: all activated controls come in to play and the swirling is drawn over the chosen background with any lighting asked for.
Smoothing (Checkbox Default: On)
Activates smoothing using a Gaussian blur.
Smooth in X (Number Min: 0.0, Max: 100.0, Default: 5.0)
Smooth in Y (Number Min: 0.0, Max: 100.0, Default: 4.0)
The amount of smoothing in either direction.
Stroke Width (Number Min: 0.0, Max: 20.0, Default: 6.36)
This is the width of the base line created from which the light points evolve.
Drawing Mode (List Box Options: Br Hard | Br Soft, Default: Br Hard)
There are two modes of drawing the light points. Stick to the default unless you have time to spare.Hard is much faster and useful for setting the movement up. Combine with Smoothing to soften the effect. Soft draws each light pixel with a soft brush stroke; be warned though, this may take some time to render depending on the number of light points to be drawn.
Softness (Number Min: 0.0, Max: 10.0, Default: 1.0)
When Br Soft is on this controls the softness of drawn light points and can be slow! You have been warned.
Demos (List Box Options: Lights 1 | Lights 2 | Lights 3 | Lights 4 | Lights 5 | Lights 6 | Lights 7, Default: Lights 1)
Select a preset to get you going.
Light CONTROL PAGE
Use Light (Checkbox Default: Off)
Use the lighting parameters to illuminate the swirls.
Light (Position Default: 0.2,0.2)
Light position.
Light (Colour Box Default: R: 65535, G: 65535, B: 65535, A: 65535)
Light colour.
Light Brightness (Number Min: 0.00, Max: 1000.0, Default: 100.0)
The brightness of the light.
Bright Radius (Number Min: 0.0, Max: 2.0, Default: 0.1)
Light radius full intensity
Dim Radius (Number Min: 0.0, Max: 2.5, Default: 0.8)
Light radius to drop off of intensity from Bright Radius to here.
Track Light (Checkbox Default: Off)
The light flows along the path.
On: the light is positioned along the path defined. Ignore the overlay position.
Off: the light takes its position from the drawn overlay position.
Track Percent (Number Min: 0.0, Max: 100.00, Default: 20.00)
Light position along the path by percentage of line length. The light XY position will be ignored in favour of the track position.
Lighting (List Box Options: Illuminate | Add, Default: Add)
Lighting application technique.
Add: the brightness is added to the scene.
Illuminate: the light radius governs what is lit and seen.
Minimum Light (Number Min: 0.00, Max: 200.0, Default: 100.0)
Background brightness when in illumination mode.
Suck CONTROL PAGE
Suction (Checkbox Default: On)
Turns on a zone of suction; dragging the light points towards its centre or expelling them outwards.
Suction Position (Position Default: 0.5,0.26)
Suck from here.
Suction Radius (Number Min: 0.0, Max: 10.0, Default: 0.3)
Radius of suction influence.
Suction (Number Min: -100.0, Max: 100.0, Default: 1.82)
The strength of the suction used.
PreSuck (Number Min: 0, Max: 500, Default: 31)
The light points will be forced through this number of frames of movement prior to being drawn. This gives a build up to the effect without having to render unwanted frames.
Twirling (Number Min: -100.0, Max: 100.0, Default: -26.26)
The light points rotate around the centre of suction.
Freeze Suction (Checkbox Default: Off)
Freezes sucked position for evolving from here. A cheated perspective effect. After the Pre Suck has been applied the suction no longer has any effect. The light points are set in this location as a starting point for any swirling or twirling.
Lines CONTROL PAGE
Point 1 (Position Default: 0.3,0.41)
Point 2 (Position Default: 0.4,0.62)
Point 3 (Position Default: 0.6,0.61)
Point 4 (Position Default: 0.68,0.39)
Point 5 (Position Default: 0.55,0.6)
Point 6 (Position Default: 0.55,0.8)
The points which form the spline line from which the aurora evolves.
Start Colour (Colour Box Default: R: 65535, G: 0, B: 65535, A: 65535)
Start colour to blend through to....
End Colour (Colour Box Default: R: 65535, G: 65535, B: 0, A: 65535)
.....the end colour.
Colour Cycle (Number Min: -100.0, Max: 100.0, Default: 0.0)
Cycle the colours through the aurora.
Points (Number Min: 3, Max: 6, Default: 4)
Number of points required to create the desired key line for the aurora.
Smoothing Points (Number Min: 10, Max: 4000, Default: 60)
Points required for a smooth line. If too few points are used the base control bands will be angular.
Seed (Number Min: 1, Max: 999, Default: 665)
Change for new patterns.