Image Transition 2

[mander23]

I am creating a slideshow in C#.Net. I was wondering if any one knew how to put transition effects on the images when they change. Any help will be appreciated. Thank you.

 

[JurkMonkey]

What kind of transition effects are you looking for in particular?

 

[mander23]

Something similar to the ones in powerpoint. Anything along those lines is what I am looking for. Do you have something in mind. Thank you.

 

[JurkMonkey]

To create the transitions you will want to draw the images using GDI+. It's actually quite easy. For the more fancy effects - even better than those of powerpoint, take a look into the Image Processing Lab project on CodeProject.

http://www.codeproject.com/cs/media/Image_Processing_Lab.asp

In terms of creating your application, I would create a generic interface ITransition that has one method:

BeginTransition(Image from, Image to, int milliseconds);

Then each of your transitions would inherit this interface and your application suddenly becomes scalable.

Hopefully that gets you started.

 

[mander23]

Thank you for the info. Could you provide an example of this using the gdi+. Thank you again.

 

[JurkMonkey]

Generally you need to invoke the redraw of the control that is drawing the image. Let's say in this case it's a PictureBox.


pictureBox1.Invalidate(); //cause the picturebox to redraw

and you should have an event handler to react to the Paint event of the PictureBox.

private void pictureBox1_Paint(object sender, EventArgs e)
{
//now you can draw things on the picturebox

e.Graphics.DrawRectangle(Pens.Red, 0,0,25,25);

//you can also draw images or parts of images here
}


if you want to constantly redraw this picturebox during a transition - use a timer and make your timer_tick invalidate the pictureBox.

 

[misterstick]

i've been thinking of trying my hand at graphics.
this gives me a place to start.
many thanks.
*



mr s. <