ScaleTransform

[EK1]

Is there an equivalent DirectX function to the GDI+ function ScaleTransform?

 

[slantz]

When you blit, you can just specify your destRect to be a different size than your srcRect, and it will "Stretch-Blit" automatically.

However, on hardware-accellerated machines, it will anti-alias the image it puts in the destRect, and theres absolutely nothing you can do about it. This may be good for you, but its very bad if youre trying to enlarge the image and use a transparency background color. (You can see on http://www.computerhelp.forum/t80676.html what happens when you do this.... My enlarged archer icon on the right ended up with a purple halo because of this anti-aliasing...)

-Hiro_Antagonist

 

[EK1]

Im actually using a Viewport, have any suggestions on how I could scale using a viewport?

 

[AndreRyan]

You want a ScaleTransform in Direct3D or DirectDraw, it sounds like Direct3D? Do you mean altering the viewport to give a "widescreen cinema" effect or Scaling a sprite/mesh?

 

[EK1]

I basically have a map hud in a viewport, I would like to zoom in and out.

 

[AndreRyan]

You mean moving the camera in Direct3D[Move the camera closer to the object to make it "bigger"], or are you using the Sprite class, or are you using DirectDraw?

 

[EK1]

Im using the CFont class to draw text and D3DXVECTOR2 to draw lines.

 

[AndreRyan]

For the font, youll need to manually enlarge it unless its a 3D Font. Are you using DrawPrimitives with the LineList/LineStrip flag or are you using the Line class. If youre using DrawPrimitives, you can change the camera position by changing the View matrix. If you used the Line class, I dont know. Direct3D lines are 1 pixel wide and this cannot be changed.