step7 Picture In Picture mod

Odinbc · **Posted:** Tue Jun 26, 2012 4:51 pm **(#1)**

This is a mod of step7 Picture In Picture MathMap expression. I hacked in a rotate option.

#Picture In Picture V0.0a
#Written by step7 (2012)
#Mod by odinbc added Rotate option(2012-06-26)
#Insets a positionable, scalable 2nd image within a main image
#
#Wiring:
#in1 - Primary image
#in2 - Secondary image to be inset into primary image
#
#User Values:
#PiP_x, PiP_y - position inset image
#PiP_scale - Main image is scaled down by this factor
#when producing the inset (have fun with scaling <1)
#PiP_opacity - Sets the inset opacity
#
#
#Contact me about the filter on Gimp Chat Forum or Mathmap Google Group
#
filter geom_rotate (image in, float angle: 0-6.283)
  in(ra + ra:[0, angle])
end
filter PiP(image in1, image in2, float PiP_x:-1-1 (0.6), float PiP_y:-1-1 (-0.6),float PiP_scale:0-16 (3.5),float PiP_opacity:0-1 (1))
qq=in2(xy:[(x-PiP_x)*PiP_scale,(y-PiP_y)*PiP_scale]);alp=alpha(qq)*PiP_opacity;in1(xy)*(1-alp)+qq*alp end

filter PIP_mod(image PiP_in1, float PiP_PiP_x : -1.000000 - 1.000000 (0.600000), float PiP_PiP_y : -1.000000 - 1.000000 (-0.600000), float PiP_PiP_scale : 0.000000 - 16.000000 (3.500000), float PiP_PiP_opacity : 0.000000 - 1.000000 (1.000000), image geom_rotate_in, float geom_rotate_angle : 0.000000 - 6.283000 (0.000000))
    geom_rotate_out = geom_rotate(geom_rotate_in, geom_rotate_angle);
    PiP_out = PiP(PiP_in1, geom_rotate_out, PiP_PiP_x, PiP_PiP_y, PiP_PiP_scale, PiP_PiP_opacity);
    PiP_out(xy)
end

step7 · **Joined:** Jun 21, 2012 **Posts:** 106

Nice one dude, this was the sort of thing I intended it for - I will post an updated version when I get time which will have rotation built in, an option to turn transparency honouring on/off (things get weird if your input image has large transparent areas) and maybe even an option to automatically put a photo frame around the inset. I try and keep the user values to a minimum on the filters I'm writing though as my compositions have that many filters the user values window gets longer than that ski run!

I'm sure I recognise that lift, is it in the Banff NP?

Odinbc · **Posted:** Tue Jun 26, 2012 5:10 pm **(#3)**

It's one of the local Vancouver mountains, either Grouse or Cypress.

Graechan · **Posted:** Tue Jun 26, 2012 11:55 pm **(#4)**

Eagerly awaiting for the new version to be posted, maybe rotate X and Y

'mathmap rules'

Rod · **Joined:** May 16, 2010 **Posts:** 14715 **Location:** USA

Nicely done Odin.

Thanks.

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

@Odinbic

that code can't work, the error is the uncommented first line.

here below the corrected code...please could you correct it also in your first message ?

Code: Select all

#Picture In Picture V0.0a
#Written by step7 (2012)
#Mod by odinbc added Rotate option(2012-06-26)
#Insets a positionable, scalable 2nd image within a main image
#
#Wiring:
#in1 - Primary image
#in2 - Secondary image to be inset into primary image
#
#User Values:
#PiP_x, PiP_y - position inset image
#PiP_scale - Main image is scaled down by this factor
#when producing the inset (have fun with scaling <1)
#PiP_opacity - Sets the inset opacity
#
#
#Contact me about the filter on Gimp Chat Forum or Mathmap Google Group
#
filter geom_rotate (image in, float angle: 0-6.283)
  in(ra + ra:[0, angle])
end
filter PiP(image in1, image in2, float PiP_x:-1-1 (0.6), float PiP_y:-1-1 (-0.6),float PiP_scale:0-16 (3.5),float PiP_opacity:0-1 (1))
qq=in2(xy:[(x-PiP_x)*PiP_scale,(y-PiP_y)*PiP_scale]);alp=alpha(qq)*PiP_opacity;in1(xy)*(1-alp)+qq*alp end

filter PIP_mod(image PiP_in1, float PiP_PiP_x : -1.000000 - 1.000000 (0.600000), float PiP_PiP_y : -1.000000 - 1.000000 (-0.600000), float PiP_PiP_scale : 0.000000 - 16.000000 (3.500000), float PiP_PiP_opacity : 0.000000 - 1.000000 (1.000000), image geom_rotate_in, float geom_rotate_angle : 0.000000 - 6.283000 (0.000000))
    geom_rotate_out = geom_rotate(geom_rotate_in, geom_rotate_angle);
    PiP_out = PiP(PiP_in1, geom_rotate_out, PiP_PiP_x, PiP_PiP_y, PiP_PiP_scale, PiP_PiP_opacity);
    PiP_out(xy)
end

Odinbc · **Posted:** Sun Jul 01, 2012 1:46 pm **(#7)**

I see no difference or error between my expression example and yours. It's a simple expression experiment; that's what MathMap is for. My example was left, on purpose the way it is, so the difference is easy to see.

I'd love to see any changes, improvements or others expressions your playing with

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

"#" !!

the first line of the comment was missing "#" so was read as code giving a parse error.

Odinbc · **Posted:** Sun Jul 01, 2012 2:09 pm **(#9)**

Fixed!

	Similar Topics	Replies
	A picture says it all.	4
	how to place text exactly into the picture - is there any help?	8
	WebP picture for the attachment	1
	Feather in gimp gives unwanted lines in picture - SOLVED	9