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Getting Started with textures
For operating with textures two bitmaps are necessary: a source-bitmap
or texture, and a target bitmap or the bitmap on which the texture will
be applied to.
- Setting the current texture. Defining a texture
is an easy step. Load any bitmap into LogoArt, mark the object and then select
the Set bitmap as texture"-menu under Extras. That's it. This
texture is valid until you define another in the same fashion, or until
LogoArt ends.
- Setting the target bitmap. This is
even easier: Mark any bitmap.
- Applying the texture. Make sure the
steps above are done, then click the Extras->Bitmap effects->Texture-
menu. The texture will be applied to the current selected bitmap, taking into
account the alpha-value (amount of texture) set (you can change this parameter
in the Effects-Settings Notebook page). The bigger the Alpha-value, the
more of the texture will be applied. Of course, you can apply a texture
multiple times.
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Texture sample
We'll create a bitmap object from a vector-graphic and then apply a
texture to it. We will not attempt to create some stunning image,
but just illustrate the flow of operations (I myself) typically use.
- make sure we have a clean drawing area. Click on New
on the upper-left icon if necessary.
- Select the text-tool from the toolbar, place the cursor or "T"
in the midddle of screen and click once with the left-mouse button.
At the prompt enter "Workshop". With the TAB-Key leave the field,
and change the Font to something like "Times Roman Bold". Set the
point size to 40. Now press the CTRL-Key and right-mouse button to get
the selection-tool again. Not doing this may create another text-object,
which you want to delete. Finally change the color of the
bitmap to a dark-tone gray.
- We're almost ready for creating a bitmap of our text-object. We
could just select Bitmap->Crop to bitmap, but we want the
area of the bitmap to be bigger as the area of the text. Select the
rectangle-tool and create a rectangle which is on all sides bigger than
the text-object. Click twice with the left-mouse button to create the
reactangle, and make it fillable. Change the color of the
fill to a light-gray. The rectangle will be completely covering the text-object.
Select Edit->Bring down or click on the Bring-down-icon on the
actions-bar. The rectangle should be still selected, the text "WORKSHOP"
should be visible.
Select Bitmap->Crop to bitmap. You
should have following bitmap:
We have not applied any textures yet. This is our target bitmap.
Notice that LogoArt creates temporary bitmap on the directory given in
the Import-page. The bitmap is named after the art-file name,
with a suffix between 0-99, for ex. noname09.bmp.
- We are ready to load the texture. Using a browser with drag/drop capabilities
thru File->Import Bitmap... go to the os2 bitmap directory on the
root drive os2/bitmap and select from there the file paper.bmp.
Mark the bitmap and click on Extras->Set bitmap as texture. We have set
paper.bmp as texture. Note: if for any reason you dont find on your system
paper.bmp, download paper.gif above and use it instead.
- We are ready to combine both bitmaps. Mark the target-bitmap (bitmap
with the work "WORKSHOP") and make sure paper.bmp is unmarked.
One more step: go to settings-notebook, Extras-page and check
that the alpha value for Bitmap texture is set to 20. Change that
value if necessary and close the panel.
Select Extras->Bitmap effects->Texture (bitmap texture) from the main
menu. Here are the results:
- We could go one step further now and apply
Select Extras->Bitmap effects->Embossing:
For embossing make sure the starting bitmap is in gray-tones. Convert
color-bitmaps to 256-gray tones before applying embossing. We could further
apply more effects on this bitmap, and we will do that in another chapter.
- We have one last step left: to save the final result. Select
Bitmap->Save bitmap file.. to get the file-dialog and enter a
name of your choice for the new bitmap. Of course, you could save in this
manner each bitmap created on the steps before (I do actually). Even more,
I create a copy of the bitmap before applying an effect - there is no
undo for special effects.
If you attempt to save the art-file itself now,
LogoArt will complain if you don't save any modified bitmap explicitely.
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