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GdiGraphics.DrawImage Method (Bitmap, Rectangle, Rectangle, CombineMode, Single, InterpolationMode)

Draws a Bitmap object.

Namespace: Aurigma.GraphicsMill.Drawing
Assembly: Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)

Syntax

Visual Basic

Public Sub DrawImage ( _
	bitmap As Bitmap, _
	destinationRect As Rectangle, _
	sourceRect As Rectangle, _
	combine As CombineMode, _
	opacity As Single, _
	interpolationMode As InterpolationMode _
)

public void DrawImage(
	Bitmap bitmap,
	Rectangle destinationRect,
	Rectangle sourceRect,
	CombineMode combine,
	float opacity,
	InterpolationMode interpolationMode
)

Parameters

bitmap: Type: Aurigma.GraphicsMill.Bitmap
Bitmap object you are going to draw.

destinationRect: Type: System.Drawing.Rectangle
The destination rectangle.

sourceRect: Type: System.Drawing.Rectangle
The source rectangle.

combine: Type: Aurigma.GraphicsMill.Transforms.CombineMode
Algorithm of images blending (plain pixels copying, alpha blending, bitwise operations, etc).

opacity: Type: System.Single
A number in range [0, 1] specifying total opacity of the image. If 0, image is completely transparent, if 1, image is completely opaque.

interpolationMode: Type: Aurigma.GraphicsMill.Transforms.InterpolationMode
Algorithm of resizing. Using this parameter you can select between speed and quality of resizing.

Remarks

Image is drawn from source rectangle on given bitmap to destination rectangle on this GdiGraphics. If source rectangle dimensions differ from dimensions of destination rectangle, it is resized to have the same size as destination rectangle.

Note

If bitmap has pixel format which is not GDI-compatible (e.g. extended pixel formats, CMYK, etc) method will automatically create a copy converted to the Format32bppArgb. That's why you always get it drawn, but if you are going to call this method multiple times, it is recommended to convert it to some GDI-compatible format (like Format32bppArgb) to increase the performance.

If you want method to calculate width and height automatically (both for source and destination rectangles) , you can pass 0 to these arguments. It will be calculated with the following way:

If both width and heigth are 0, it will take source image dimensions (Width and Height properties). This way no resize will be done during drawing.
If only one of arguments is 0, it will calculate this argument to save proportion. For example, source image is 800x600, and you pass 400 as width and 0 as height. Height will be calculated to preserve aspect ratio of the image, i.e. it will be equal to 300.

All coordinates are measured in units specified with Unit property of the bitmap.

GdiGraphics.DrawImage Method (Bitmap, Rectangle, Rectangle, CombineMode, Single, InterpolationMode)

Syntax

Parameters

Remarks

See Also

Reference

Manual