Bitmap manipulation
[OpenSpace3D high level 2D library]

Functions
	G2DcreateAlphaBitmap (alphabmp, x, y, left, right, ww, hh, w, h)
	Create a resized alpha bitmap.
	G2DcreateAlphaBitmapRollover (alphabmp, x, y, left, right, ww, hh, w, h)
	Create a resized alpha bitmap rollover (5 states).
	G2DloadPngToBmp (chan, path)
	Load an alpha bitmap file (png) to a bitmap.
	G2DloadBmp (chan, path)
	Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a bitmap.
	G2DloadAlphaBmp (chan, path)
	Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a AlphaBitmap.
	G2DstrechBitmap (chan, bmp, width, height, bcolor)
	Strech a bitmap to a new size and keep ratio.
	G2DcreateLayer (chan, w, h, border, bcolor, color, opacity)
	Create an AlphaBitmap with border, backcolor and opacity.
	G2DsetLayer (chan, alphabmp, w, h, border, bcolor, color, opacity)
	Modify an AlphaBitmap with border, backcolor and opacity.

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Detailed Description

Bitmap manipulation

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Function Documentation

G2DcreateAlphaBitmap	(	alphabmp	,
		x	,
		y	,
		left	,
		right	,
		ww	,
		hh	,
		w	,
		h
	)

Create a resized alpha bitmap.

Prototype: fun [AlphaBitmap I I I I I I I I] AlphaBitmap

Parameters:

	AlphaBitmap	: source alpha bitmap
	I	: x decal
	I	: y decal
	I	: left marge
	I	: right marge
	I	: fixed width
	I	: fixed height
	I	: final width
	I	: final height

Returns:

AlphaBitmap : the resized alpha bitmap

G2DcreateAlphaBitmapRollover	(	alphabmp	,
		x	,
		y	,
		left	,
		right	,
		ww	,
		hh	,
		w	,
		h
	)

Create a resized alpha bitmap rollover (5 states).

Prototype: fun [AlphaBitmap I I I I I I I I] AlphaBitmap

Parameters:

	AlphaBitmap	: source alpha bitmap
	I	: x decal
	I	: y decal
	I	: left marge
	I	: right marge
	I	: fixed width
	I	: fixed height
	I	: final width
	I	: final height

Returns:

AlphaBitmap : the resized alpha bitmap rollover (5 states)

G2DloadPngToBmp	(	chan	,
		path
	)

Load an alpha bitmap file (png) to a bitmap.

Prototype: fun [Chn S] ObjBitmap

Parameters:

	Chn	: channel
	S	: file path in scol partition

Returns:

ObjBitmap : the loaded bitmap

G2DloadBmp	(	chan	,
		path
	)

Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a bitmap.

Prototype: fun [Chn S] ObjBitmap

Parameters:

	Chn	: channel
	S	: file path in scol partition

Returns:

ObjBitmap : the loaded bitmap

G2DloadAlphaBmp	(	chan	,
		path
	)

Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a AlphaBitmap.

Prototype: fun [Chn S] AlphaBitmap

Parameters:

	Chn	: channel
	S	: file path in scol partition

Returns:

AlphaBitmap : the loaded AlphaBitmap

G2DstrechBitmap	(	chan	,
		bmp	,
		width	,
		height	,
		bcolor
	)

Strech a bitmap to a new size and keep ratio.

Prototype: fun [Chn ObjBitmap I I I] ObjBitmap

Parameters:

	Chn	: channel
	ObjBitmap	: source bitmap
	I	: destination width
	I	: destination height
	I	: background color

Returns:

ObjBitmap : the bitmap in new size

G2DcreateLayer	(	chan	,
		w	,
		h	,
		border	,
		bcolor	,
		color	,
		opacity
	)

Create an AlphaBitmap with border, backcolor and opacity.

Prototype: fun [Chn I I I I I I] AlphaBitmap

Parameters:

	Chn	: channel
	I	: width
	I	: height
	I	: size
	I	: border color
	I	: background color
	I	: opacity 0 to 100

Returns:

AlphaBitmap : AlphaBitmap for using as layer

G2DsetLayer	(	chan	,
		alphabmp	,
		w	,
		h	,
		border	,
		bcolor	,
		color	,
		opacity
	)

Modify an AlphaBitmap with border, backcolor and opacity.

Prototype: fun [Chn AlphaBitmap I I I I I I] AlphaBitmap

Parameters:

	Chn	: channel
	AlphaBitmap	: alpha bitmap to modify
	I	: width
	I	: height
	I	: size
	I	: border color
	I	: background color
	I	: opacity 0 to 100

Returns:

AlphaBitmap : AlphaBitmap for using as layer