FlowerPot
Flowerpot generates multi colored glowing embers in parabolic
trajectories from given x and y coordinates resembling Flower Pot Fire
Works (as popularly known in India).The x and y coordinates
may be varied linearly during transition by specifying different values
for initial and end coordinates. The initial horizontal spread of the
flowers will be -rise/4 to +rise/4 around x coordinate. The Zoom parameter
approximates the flower pot nearing or moving away in Z direction
(effectively varies rise from frame to frame). Value of 100 keeps it constant.
Any value less than 100 apparently moves source away while higher than 100
brings it closer. Even though parameters are checked to ensure visibility
of the flowers, due to combined effect of parameter variations, they may
go out of frame (not visible). Experiment with parameters for desired result.
Preferably duration be 4 sec or more to visulise properly.
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 |
| initial x coordinate of source |
x |
integer |
to ensure visibilty of fireworks |
mid frame width |
| Initial y coordinate of source |
y |
integer |
ensure visibility |
frame height |
| Maximum rise of fire |
rise |
integer |
reasonable value |
frame height |
| Floor Y coordinate below which flowerss will not fall |
yfloor |
integer |
always more than y - rise |
inity |
| end x coordinate of source |
ex |
integer |
to ensure visibilty of fireworks |
x |
| end y coordinate of source |
ey |
integer |
ensure visibility |
y |
| zoom %age at end. (initial is 100) |
zoom |
integer |
10 to 400 |
100 |
#Usage examples:-
Flowerpot(last,51,190, 0,300,300,400,400,200,50)
Flowerpot (last,51,190,300,yfloor=300)
Flowerpot (last,51,190,100,200, rise=80, zoom=300)
Flowerpot (last,51,190)
Flowerpot (last,2,240, x=80,ex=400, y=580, ey=30)