Sunflower generates radially expanding (from given x and y
coordinates), colored light beams as in the Sunflower fireworks.. The radius
to which the beams grow, whether beams are colored or white can be specified.
Due to gravitation , some of the beams may fall back well before
the max radius is attained, while some may travel more than radius,
depending upon number of frames in the effect and fps of the clip. Vision persistance p determines length of beam visible at any time. At end of effect the beams fall as separate embers.
Sufficent number of frames must be included in this effect to be properly visualised..
RGB, YUY2 and Planar 8/ 9-16/32 bit depth formats are supported. Thread Safe.
Details of parameters
| Description |
Name |
Type |
Limits |
Default |
| clip |
|
clip |
|
none |
| start frame number |
sf |
Integer |
within clip |
first frame |
| end frame number |
ef |
Integer |
within clip |
last frame |
| x coordinate of the sunflower center |
x |
integer |
ensure atleast a part is seen |
mid frame |
| y coordinate of the sunflower center |
y |
integer |
ensure a part is atleast seen |
mid frame |
| maximum radius of flower |
radius |
integer |
not more than frame diagonal |
1/2 of diagonal |
| are flower petals colored or white? |
color |
boolean |
true for colored, false for white |
true |
| end x coordinate of the sunflower center |
ex |
integer |
ensure atleast a part is seen |
x |
| end y coordinate of the sunflower center |
ey |
integer |
ensure a part is atleast seen |
y |
| gravity |
gr |
float |
> 0 |
0.25f |
| persistance in seconds |
p |
float |
Must result in at least 2 frames |
0.75f |