Visual C# Windows Forms PictureBox Clipping and Color Filter

[OmenFelix]

Hey guys I was wondering if I had a sprite-sheet and I wanted to load only a certain 32x32 region of it into a 'PictureBox' of a Windows Form, how would I go about doing that? Also as a bonus, how would I filter the Magenta(255,0,255) and render as alpha, like SDL colour-keying. NOTE: I'm not too bothered about the second question, as that can be done somewhat manually by creating a magenta to alpha program.

Thanks in advance.

[dandymcgee]

A better questions is why would you want to do that? I hope this is an editor question..

[OmenFelix]

A better questions is why would you want to do that? I hope this is an editor question..

Yes it is. It's only a temporary measure as none of the team really have experience with editors nor want to do much about it. Just to test the tiling system really.

[tappatekie]

Hey guys I was wondering if I had a sprite-sheet and I wanted to load only a certain 32x32 region of it into a 'PictureBox' of a Windows Form, how would I go about doing that? Also as a bonus, how would I filter the Magenta(255,0,255) and render as alpha, like SDL colour-keying. NOTE: I'm not too bothered about the second question, as that can be done somewhat manually by creating a magenta to alpha program.

Thanks in advance.

You could use cropping?

Code: Select all

Bitmap bmp = new Bitmap(32,32);
//Draw the spritesheet bitmap
Graphics.DrawImage(spritesheet, new Rectangle(-spiteX, -spriteY, 32, 32));
//Set the picture box image and size
pictureBox.Image = bmp;
pictureBox.Size = bmp.Size;

spriteX and spriteY is negative since we want to offset the render of the main sprite image and select 32x32 pixels of it.
It'l do the job...

This however may not be the best way to go about this since I'm not sure than rendering the spritesheet for every sprite is as-efficent.

You could also use

Code: Select all

Bitmap mySprite = (Bitmap)spritesheet.Clone(new Rectangle(spriteX, spriteY, 32,32), PixelFormat.Gdi);

[OmenFelix]

Hey guys I was wondering if I had a sprite-sheet and I wanted to load only a certain 32x32 region of it into a 'PictureBox' of a Windows Form, how would I go about doing that? Also as a bonus, how would I filter the Magenta(255,0,255) and render as alpha, like SDL colour-keying. NOTE: I'm not too bothered about the second question, as that can be done somewhat manually by creating a magenta to alpha program.

Thanks in advance.

You could use cropping?

Code: Select all

Bitmap bmp = new Bitmap(32,32);
//Draw the spritesheet bitmap
Graphics.DrawImage(spritesheet, new Rectangle(-spiteX, -spriteY, 32, 32));
//Set the picture box image and size
pictureBox.Image = bmp;
pictureBox.Size = bmp.Size;

spriteX and spriteY is negative since we want to offset the render of the main sprite image and select 32x32 pixels of it.
It'l do the job...

This however may not be the best way to go about this since I'm not sure than rendering the spritesheet for every sprite is as-efficent.

You could also use

Code: Select all

Bitmap mySprite = (Bitmap)spritesheet.Clone(new Rectangle(spriteX, spriteY, 32,32), PixelFormat.Gdi);

This code isn't for a PictureBox is it?

[tappatekie]

Hey guys I was wondering if I had a sprite-sheet and I wanted to load only a certain 32x32 region of it into a 'PictureBox' of a Windows Form, how would I go about doing that? Also as a bonus, how would I filter the Magenta(255,0,255) and render as alpha, like SDL colour-keying. NOTE: I'm not too bothered about the second question, as that can be done somewhat manually by creating a magenta to alpha program.

Thanks in advance.

You could use cropping?

Code: Select all

Bitmap bmp = new Bitmap(32,32);
//Draw the spritesheet bitmap
Graphics.DrawImage(spritesheet, new Rectangle(-spiteX, -spriteY, 32, 32));
//Set the picture box image and size
pictureBox.Image = bmp;
pictureBox.Size = bmp.Size;

spriteX and spriteY is negative since we want to offset the render of the main sprite image and select 32x32 pixels of it.
It'l do the job...

This however may not be the best way to go about this since I'm not sure than rendering the spritesheet for every sprite is as-efficent.

You could also use

Code: Select all

Bitmap mySprite = (Bitmap)spritesheet.Clone(new Rectangle(spriteX, spriteY, 32,32), PixelFormat.Gdi);

This code isn't for a PictureBox is it?

You can apply the code to a picture box... with "pictureBox.Image = croppedBitmap;", the cropped bitmap would be the mySprite bit in the code...

Unless you want the picturebox to only show a certain part of the image (spritesheet) with the picture box image property set to the spritesheet image, if so, please be more specific, you said to "load only a certain 32x32 region of it into a 'PictureBox' " ("INTO"...)

[OmenFelix]

Hey guys I was wondering if I had a sprite-sheet and I wanted to load only a certain 32x32 region of it into a 'PictureBox' of a Windows Form, how would I go about doing that? Also as a bonus, how would I filter the Magenta(255,0,255) and render as alpha, like SDL colour-keying. NOTE: I'm not too bothered about the second question, as that can be done somewhat manually by creating a magenta to alpha program.

Thanks in advance.

You could use cropping?

Code: Select all

Bitmap bmp = new Bitmap(32,32);
//Draw the spritesheet bitmap
Graphics.DrawImage(spritesheet, new Rectangle(-spiteX, -spriteY, 32, 32));
//Set the picture box image and size
pictureBox.Image = bmp;
pictureBox.Size = bmp.Size;

spriteX and spriteY is negative since we want to offset the render of the main sprite image and select 32x32 pixels of it.
It'l do the job...

This however may not be the best way to go about this since I'm not sure than rendering the spritesheet for every sprite is as-efficent.

You could also use

Code: Select all

Bitmap mySprite = (Bitmap)spritesheet.Clone(new Rectangle(spriteX, spriteY, 32,32), PixelFormat.Gdi);

This code isn't for a PictureBox is it?

You can apply the code to a picture box... with "pictureBox.Image = croppedBitmap;", the cropped bitmap would be the mySprite bit in the code...

Unless you want the picturebox to only show a certain part of the image (spritesheet) with the picture box image property set to the spritesheet image, if so, please be more specific, you said to "load only a certain 32x32 region of it into a 'PictureBox' " ("INTO"...)

Thanks! I'll try it later. :3