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Date Posted: 17:52:45 10/31/03 Fri
Author: Michel
Subject: Re: Questions about Select
In reply to: Azurea Skyes 's message, "Questions about Select" on 05:13:25 10/31/03 Fri

Hi Azurea,

From your description it looks like you want to do this without any user intervention. This can be done in a few steps.

- Load the original image in the appropriate TDibGraphic class, ie, TBitmapGraphic for bmp files.

- Use the TCropTransform to extract the rectangle you need

- Create a TTgaGraphic of the correct output size. Fill it black using TgaGraphic.Fill

- Use TgaGraphic.Draw( X, Y, bmpGraphic ) to draw the selection.

- Finally, TgaGraphic.SaveToFile.

I also received your email. I also had another request this week to "preset" the rubberband selection. I will look at this on the weekend and have some news early next week.

Best regards,


>Is it possible to pre-size the select rectangle? I
>have need to allow someone to select a 256x400
>selection from an image (no more, no less). I then
>need to make a new picture 256x512 pixels in size,
>with the previously selected area at the top (leaving
>the remaining area black). Finally saving it as a TGA
>Any thoughts?
>I am currently evaluating Envision, and if someone can
>demonstrate this ... it's a sale... if not... back to
>the drawing board.

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