Re: Text of an image
Interesting Klaus - I'd got into a bit of a habit of using Players often instead of image controls - partly because you can display a wider range of media - and well what's the difference? In fact given you figures it would seem that there are the only reasons not to use a player would be: 1. Quicktime is not installed 2. You don't want the media in external files Or are there other reasons? ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
Hi all, Hi Ken and all, The lockLoc of the second image must either be false OR the second image must be the exact same size as the first image. Otherwise the image/alphaData of the two images will not be the same. Right. Here's a "cheat sheet" for those who care: ;-) the imageData of ... ... thanks a lot for this one, Ken, very useful info! Mabe the following is of some interest for Mac users* in this context. ... ... OK, to be fair I should make test again with Rev 3.0 :-) And sure will do on the weekend! Best Klaus Major [EMAIL PROTECTED] http://www.major-k.de ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
Hi Ken and all, The lockLoc of the second image must either be false OR the second image must be the exact same size as the first image. Otherwise the image/alphaData of the two images will not be the same. Right. Here's a "cheat sheet" for those who care: ;-) the imageData of ... ... thanks a lot for this one, Ken, very useful info! Mabe the following is of some interest for Mac users* in this context. *This uses QuickTime player objects and one cannot say that QuickTime is "optimized" for Windows or vice versa ;-) I made some test about 2 years ago to see how fast one could resize large images in Rev. I timed the same actions for referenced images and for players. The test were made with OSX on a G4 with 1 Ghz and 1 GB RAM! 1. I set the filename of a Rev image/player 2. computed the correct proporional thumbnail size from the "formatted dimensions" 3. locked the screen and 4. resized the image/player Dimensions are in pixels, times in milliseconds. Thumbnail sizes show the max height/width. Image dimensions: 2560*1920 Thumbnailsize: 60*60 Rev img: 1786 Player: 78 Image dimensions: 2560*1920 Thumbnailsize: 100*100 Rev img: 1822 Player: 85 Image dimensions: 2560*1920 Thumbnailsize: 150*150 Rev img: 1896 Player: 75 Image dimensions: 2560*1920 Thumbnailsize: 200*200 Rev img: 1822 Player: 79 Image dimensions: 2560*1920 Thumbnailsize: 300*300 Rev img: 1924 Player: 76 ! Image dimensions: 3440*2580 Thumbnailsize: 150*150 Rev img: 2991 Player: 74 Very impressive I think, hope some find it useful. Best Klaus Major [EMAIL PROTECTED] http://www.major-k.de ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
> The lockLoc of the second image must either be false OR the second > image must be the exact same size as the first image. Otherwise the > image/alphaData of the two images will not be the same. Right. Here's a "cheat sheet" for those who care: ;-) the imageData of - Holds the Red, Green, Blue, and Alpha pixel values (bits) of the visual representation of the image object. The amount of imageData in an image object is (Height * Width * 4), regardless of whether there's an actual image in the image object. (You can test this by creating an image object, sizing it to any size you like, and then execute "put length(the imageData of )" in the Message Box.) the text of Holds the actual binary data for the image *inside* the image object. If the image object's 'alphaData' property contains any other value than 255 (opaque), the data is stored in PNG format in the image. Setting ImageData/Binary vs. Visual Copies - NOTE: When you set the imageData of an object, you are telling Rev to *create the binary data* to represent the imageData you're passing it. This has the result of causing the "text" of the image object to be different than the "text" of a source image, even if they *look* the same. So for the purposes of the list below, I use these terms: "binary copy" - The text of two images are the same, but the imageData of the two images are different. "visual copy" - The imageData of two images are the same, but the text of the two images are different. "exact copy" - Both the text and imageData of two images are the same. "unique" - Both the text and imageData of two images are different. Resizing/FormattedWidth/FormattedHeight -- When you resize an image, the visual representation (imageData) changes, but its binary representation does not. This is why an image object will automatically resize itself to match the full dimensions of the image when a card is opened UNLESS the image object's "lockLocation" (lockLoc) is TRUE. Note that even though you can resize the rect of the image object, the original image data's width and height are still accessible through the use of the "formattedWIdth" and "formattedHeight" properties of the image object. Embedding vs. Referencing When you embed an image (i.e. "Import as Control..."), the image object created has both a visual representation (imageData) as well as a binary representation (text). When you reference an image (i.e. "New Referenced Control..."), the image object created ONLY has a visual representation (imageData) and has no binary representation at all (text is empty). WORKING WITH TWO IMAGES = Source and Destination are Same Size put img "Src" into img "Dest" - Source is Embedded: img "Dest" has an EXACT COPY of img "Src" - Source is Referenced: img "Dest" is empty (or emptied out) set the imageData of img "Dest" to the imageData of img "Src" - Source is Embedded OR Referenced: img "Dest" has an VISUAL COPY of img "Src" Source and Destination are Different Sizes put img "Src" into img "Dest" - Source is Embedded, lockLoc of Dest is FALSE: img "Dest" is resized to match the width/height of img "Src", resulting in an EXACT COPY of img "Src" - Source is Embedded, lockLoc of Dest is TRUE: img "Dest" is not resized, but holds a skewed view of img "Src", just as if you'd resized img "Src" to the same dimensions as img "Dest", resulting in a BINARY COPY of img "Src" - Source is Referenced, lockLoc of Dest is TRUE or FALSE: img "Dest" is empty (or emptied out) set the imageData of img "Dest" to the imageData of img "Src" Source is Embedded or Referenced, lockLoc is TRUE or FALSE: - img "Dest" contains visual garbage, and its size is unchanged, regardless of whether the lockLoc is TRUE or FALSE; img "Dest" is UNIQUE TRICKS == Resetting an Image to its Original Size/State -- If an embedded image has had its rect changed so that it is no longer the original size, you reset the image like this: set the lockLoc of img 1 to false put img 1 into img 1 This is possible because the binary data (text) of img 1 has not changed since it was imported; only the visual representation (imageData) has changed. So putting the binary data of the image back into the image forces Rev to resize the image (assuming the lockLoc is false). Creating Thumbnails/Reducing Size of Stored Images
Re: Text of an image
On Sep 4, 2008, at 2:26 PM, Scott Rossi wrote: Perhaps one needs to get into the nitty gritty of *when* an object is treated a PNG by Rev, but regardless: 1) if you import a GIF, you can assign both its image/alpha data to another image by referencing its text 2) if you create a native image object within Rev, you can assign both its image/alpha data to another image by referencing its text ... But for practical purposes, the text property does indeed reference both image/alphadata. This is true but there are some caveats. The lockLoc of the second image must either be false OR the second image must be the exact same size as the first image. Otherwise the image/alphaData of the two images will not be the same. Example: If the second image was twice the size of the first image (and had lockLoc set to true) and you assigned the text of the first image to the text of the second image then the imageData/alphaData would NOT be the same. This is because the imageData represents what is *visible* on the screen and the two images are not the same size. What is most likely happening under the hood is that when you assign the text property of an image control Rev is creating the image/ alphaData based on the current size of the image control. Regards, -- Trevor DeVore Blue Mango Learning Systems www.bluemangolearning.com-www.screensteps.com ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
Recently, J. Landman Gay wrote: >> In answer to your question about 'text' and 'alphadata', no, the 'text' >> of an image does not contain the 'alphadata' image control property. It >> can contain the alpha data as represented in the PNG format however. > > Sounds like we need more clarification. ;) > > I've been trying to track down a crash while working with images, which > turns out not to be related to any of this. I thought I knew the > difference between text and imagedata (and except for the above, I think > I did.) Trevor's explanation may just be a different way of saying what > Scott said though. Perhaps one needs to get into the nitty gritty of *when* an object is treated a PNG by Rev, but regardless: 1) if you import a GIF, you can assign both its image/alpha data to another image by referencing its text 2) if you create a native image object within Rev, you can assign both its image/alpha data to another image by referencing its text I've heard that when working images in Rev, some things happen under the hood at some point that cause Rev to treat images as PNG regardless of whatever format they started as. So Trevor's explanation may be *technically* true, in that Rev treats ALL objects as PNGs. But for practical purposes, the text property does indeed reference both image/alphadata. Regards, Scott Rossi Creative Director Tactile Media, Multimedia & Design ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
Bonsoir Richard,
I'm always worried when somebody, even you :-), says: sometimes it
works and sometimes it does not ;-)
Does not sound good...
I have not experienced what you say:
As soon as imageData are related to current display (i.e. related to
the size of the image object you put in), it always worked for me.
Can you be more specific?
Le 4 sept. 08 à 18:04, Richard Gaskin a écrit :
Eric Chatonet wrote:
Let's say you are creating thumbnails using large referenced
images (this means that your image object is locked with a lesser
size).
set the text of img 1 to url("binfile:" & ) will
display the image : OK.
And you'll be able to display it its original size in an unlocked
image using the 'same text'.
If you add:
set the imageData of img 1 to the imageData of img 1
This will fit the text of the image to its current locked size.
Many bytes saved :-)
I've been experimenting with a similar technique here to make
thumbnails I can store in a stack, but have had mixed results:
sometimes the imagedata in the new thumbnail image remains intact,
other times it appears empty.
The source for these images are files on disk, displayed in an
image object much smaller. My goal is to get the imageData from
the display image and create a new image in another stack with that
thumbnail - any tips for doing that reliably?
--
Richard Gaskin
Managing Editor, revJournal
Best regards from Paris,
Eric Chatonet.
Plugins and tutorials for Revolution: http://www.sosmartsoftware.com/
Email: [EMAIL PROTECTED]/
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Re: Text of an image
On 9/4/08 9:04 AM, "Richard Gaskin" <[EMAIL PROTECTED]> wrote: >>set the imageData of img 1 to the imageData of img 1 >> This will fit the text of the image to its current locked size. >> Many bytes saved :-) > > I've been experimenting with a similar technique here to make thumbnails > I can store in a stack, but have had mixed results: sometimes the > imagedata in the new thumbnail image remains intact, other times it > appears empty. > > The source for these images are files on disk, displayed in an image > object much smaller. My goal is to get the imageData from the display > image and create a new image in another stack with that thumbnail - any > tips for doing that reliably? A different take on the issue. At one point, windows in Rev that were on monitors other than the main would display properly, but not be truly accessible. One function was the snapshot, as it could only be done on the main monitor. One solution I build would move the stack to the main monitor, take the shot, then move it back. Hope this helps Jim Ault Las Vegas ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
On 9/4/08 9:04 AM, "Richard Gaskin" <[EMAIL PROTECTED]> wrote: >>set the imageData of img 1 to the imageData of img 1 >> This will fit the text of the image to its current locked size. >> Many bytes saved :-) > > I've been experimenting with a similar technique here to make thumbnails > I can store in a stack, but have had mixed results: sometimes the > imagedata in the new thumbnail image remains intact, other times it > appears empty. > > The source for these images are files on disk, displayed in an image > object much smaller. My goal is to get the imageData from the display > image and create a new image in another stack with that thumbnail - any > tips for doing that reliably? Perhaps you could add a test such as set the clipboarddata to the imageData of img 1 if the length of the clipboarddata < 100 then -- the clipboardData is not likely enough bytes for an image --do something else that may solve the empty thumbnail occurrence end if Jim Ault Las Vegas ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
Scott Rossi wrote: Yes -- the text refers to both properties. Wish I had known this years ago. Trevor DeVore wrote: > In answer to your question about 'text' and 'alphadata', no, the 'text' > of an image does not contain the 'alphadata' image control property. It > can contain the alpha data as represented in the PNG format however. Sounds like we need more clarification. ;) I've been trying to track down a crash while working with images, which turns out not to be related to any of this. I thought I knew the difference between text and imagedata (and except for the above, I think I did.) Trevor's explanation may just be a different way of saying what Scott said though. -- Jacqueline Landman Gay | [EMAIL PROTECTED] HyperActive Software | http://www.hyperactivesw.com ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
Eric Chatonet wrote:
Let's say you are creating thumbnails using large referenced images
(this means that your image object is locked with a lesser size).
set the text of img 1 to url("binfile:" & ) will
display the image : OK.
And you'll be able to display it its original size in an unlocked
image using the 'same text'.
If you add:
set the imageData of img 1 to the imageData of img 1
This will fit the text of the image to its current locked size.
Many bytes saved :-)
I've been experimenting with a similar technique here to make thumbnails
I can store in a stack, but have had mixed results: sometimes the
imagedata in the new thumbnail image remains intact, other times it
appears empty.
The source for these images are files on disk, displayed in an image
object much smaller. My goal is to get the imageData from the display
image and create a new image in another stack with that thumbnail - any
tips for doing that reliably?
--
Richard Gaskin
Managing Editor, revJournal
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Re: Text of an image
Bonjour Jacque,
Just an add-up:
Let's say you are creating thumbnails using large referenced images
(this means that your image object is locked with a lesser size).
set the text of img 1 to url("binfile:" & ) will
display the image : OK.
And you'll be able to display it its original size in an unlocked
image using the 'same text'.
If you add:
set the imageData of img 1 to the imageData of img 1
This will fit the text of the image to its current locked size.
Many bytes saved :-)
Le 4 sept. 08 à 16:18, Rob Cozens a écrit :
Hi Jacque,
What's the difference between the text of an image and its imageData?
The imageData is the image as it is currently displayed; the image
text is the actual image as imported or referenced. The imageData
changes when the image is resized; the image text does not.
This means one loses image detail when referencing imageData of an
image that is not displayed full-size.
Rob Cozens CCW
Serendipity Software Company
Best regards from Paris,
Eric Chatonet.
Plugins and tutorials for Revolution: http://www.sosmartsoftware.com/
Email: [EMAIL PROTECTED]/
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Re: Text of an image
Hi Jacque, What's the difference between the text of an image and its imageData? The imageData is the image as it is currently displayed; the image text is the actual image as imported or referenced. The imageData changes when the image is resized; the image text does not. This means one loses image detail when referencing imageData of an image that is not displayed full-size. Rob Cozens CCW Serendipity Software Company "And I, which was two fooles, do so grow three; Who are a little wise, the best fooles bee." from "The Triple Foole" by John Donne (1572-1631) ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Text of an image
On Sep 4, 2008, at 1:11 AM, J. Landman Gay wrote:
What's the difference between the text of an image and its
imageData? Does text include the alphadata?
If you 'put' the contents of an image file into an image control or
set the imageData of an image control then the 'text' property
contains the actual contents of the image file. An example:
put URL ("binfile:/Path/To/file.png") into img 1
For a PNG file or if you set the imageData that data would be in PNG
format. This means you can recreate a PNG (or JPEG, etc.) file on disk:
put the text of img 1 into URL ("binfile:/Path/To/file2.png")
If you set the filename of an image, however, the 'text' of the image
will return empty.
The imageData is a standardized means of representing the image in an
image control. You know that it has 4 bytes per pixel and all pixels
are represented. This makes it an easier format to create on the fly
when creating image patterns, etc. For those not familiar with working
with imageData take a look at the following lesson. It shows how to
use imageData to create alternating line colors in a field:
In answer to your question about 'text' and 'alphadata', no, the
'text' of an image does not contain the 'alphadata' image control
property. It can contain the alpha data as represented in the PNG
format however.
Regards,
--
Trevor DeVore
Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Developer Resources: http://revolution.bluemangolearning.com
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Re: Text of an image
Recently, J. Landman Gay wrote: > What's the difference between the text of an image and its imageData? > Does text include the alphadata? Yes -- the text refers to both properties. Wish I had known this years ago. :-) Regards, Scott Rossi Creative Director Tactile Media, Multimedia & Design ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
