how to stretch bitmap?

[Draycos Goldaryn]

Greetings,

I'm still working on my custom transitions, and I almost have it working the way I want. In fact, it works flawlessly, if I create my transition image at the proper size to fill the screen, but one of my games will have a setting in the menu where the player can choose what resolution to play in. Now, as it is, I can set it to use a certain transition graphic depending on the resolution, but I'd rather not have multiple copies of each transition for each resolution. instead, i would like just one of each transition, and stretch it to fit the window in game. Unfortunately, I do not fully understand the description of Bitmap.stretch_blt as it does not give an understandable example. Can someone help me with this?

how do I stretch a 640x480 graphic to 800x600?

Thank you,

Draycos Goldaryn

[EDIT] I forgot to mention, I'm using RMXP [/EDIT]

 

[game_guy]

Use this.

bitmap.stretch_blt(Rect.new(x_pos, y_pos, width_to_stretch, height_to_stretch), bmp, Rect.new(0, 0, bmp.width, bmp.height))

 

[Draycos Goldaryn]

thank you. i had a bit of a problem at first. this is what i tried:

      @pic.bitmap = Bitmap.new(".\\Graphics\\Transitions\\"+image+".png")

      @pic.bitmap.stretch_blt(Rect.new(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT), @pic.bitmap, Rect.new(0, 0, @pic.bitmap.width, @pic.bitmap.height))

 

but nothing showed up at all. Then I tried:

      bmp = Bitmap.new(".\\Graphics\\Transitions\\"+image+".png")

      @pic.bitmap = bmp

      @pic.bitmap.stretch_blt(Rect.new(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT), bmp, Rect.new(0, 0, bmp.width, bmp.height))

 

but it did not stretch the image. then i took one more look at the help file, and tried:

      bmp = Bitmap.new(".\\Graphics\\Transitions\\"+image+".png")

      @pic.bitmap = Bitmap.new(SCREEN_WIDTH, SCREEN_HEIGHT)

      @pic.bitmap.stretch_blt(Rect.new(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT), bmp, Rect.new(0, 0, bmp.width, bmp.height))

 

and it worked! Moral of the story, create a blank bitmap at the size I want, then stretch a bitmap defined elsewhere into the empty one.

Thank you for all your help.