drawimage not working?

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drawimage not working?

by jfcwilson :: Rate this Message:

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Hi all,

While running some tests concerning a flashlight effect, I came across this:

When I try the code below, pipmak tells me that "drawimage" is not a valid method.

Anyone know what I(or Pipmak) am doing wrong?

Thanks a lot,

James

CODE/

slide "light.jpg"

local darkLayer = patch { x = 0, y = 0, image = "dark.png" }
local flashlightmask = patch { x = 0, y = 0, image = "flashlightmask.png", visible=false }

hotspotmap "hotspotmap.png"

hotspot {
onmousedown = function()
darkLayer:drawimage (300, 200, flashlightmask)
end
}

CODE\

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Re: drawimage not working?

by Christian Walther :: Rate this Message:

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James Wilson wrote:
> While running some tests concerning a flashlight effect, I came across this:
> When I try the code below, pipmak tells me that "drawimage" is not a
> valid method.

You're trying to call the "drawimage" method of a patch, but patches
don't have such a method. Images have one.

-Christian

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Re: drawimage not working?

by jfcwilson :: Rate this Message:

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I see. How does one reference an image object again, to be used in this fashion?

--- On Sat, 10/31/09, Christian Walther <cwalther@...> wrote:

From: Christian Walther <cwalther@...>
Subject: Re: drawimage not working?
To: pipmak-users@...
Date: Saturday, October 31, 2009, 12:02 PM

James Wilson wrote:
> While running some tests concerning a flashlight effect, I came across this:
> When I try the code below, pipmak tells me that "drawimage" is not a
> valid method.

You're trying to call the "drawimage" method of a patch, but patches
don't have such a method. Images have one.

-Christian

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Re: drawimage not working?

by Christian Walther :: Rate this Message:

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James Wilson wrote:
> I see. How does one reference an image object again, to be used in this
> fashion?

pipmak.newimage() - see section 3.12 "Image Manipulation" in the manual.

-Christian

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Re: drawimage not working?

by jfcwilson :: Rate this Message:

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I know. Sorry, but what I meant was how does one refer to that image object in code? The manual doesn't seem to make that clear.

--- On Sun, 11/1/09, Christian Walther <cwalther@...> wrote:

From: Christian Walther <cwalther@...>
Subject: Re: drawimage not working?
To: pipmak-users@...
Date: Sunday, November 1, 2009, 4:54 AM

James Wilson wrote:
> I see. How does one reference an image object again, to be used in this
> fashion?

pipmak.newimage() - see section 3.12 "Image Manipulation" in the manual.

-Christian

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Re: drawimage not working?

by Christian Walther :: Rate this Message:

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James Wilson wrote:
> I know. Sorry, but what I meant was how does one refer to that image
> object in code? The manual doesn't seem to make that clear.

I'm not sure I understand your question. The pipmak.newimage function
returns an image object that you can treat that like any other Lua value
- e.g. assign it to a variable, call methods on it, etc. - and use it
with any Pipmak functionality that accepts images.

For example,

patch { x = 30, y = 80, image = pipmak.newimage(30, 20):color(1, 0,
0):fill() }

or

local myimage = pipmak.newimage(30, 20)
myimage:color(1, 0, 0)
myimage:fill()
mypatch:setimage(myimage)

Does that answer the question?

-Christian

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