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	'''INT''' blendop_new ( )		'''INT''' blendop_new ( )
-	Creates a new [[blend operation]] with a [[blend table]]. This table will contain a blending effect, which you'll have to set after creating the [[blend operation]]. When that is done you can finally [[blendop_apply|apply]] or [[blendop_assign|assign]] the [[blendop]] to a [[graphic]].	+	Creates a new [[blend table]]. This table will contain a blending effect, which you'll have to set afterwards, using the various functions. When that is done you can finally [[blendop_apply|apply]] or [[blendop_assign|assign]] the [[blendop]] to a [[graphic]].
	The source section of the [[blend table]] will be the normal object and the destination section will be cleared, removing translucency.		The source section of the [[blend table]] will be the normal object and the destination section will be cleared, removing translucency.

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Revision as of 22:59, 17 January 2008

Contents 1 Definition 2 Returns 3 Notes 4 Errors 5 Example

Definition

INT blendop_new ( )

Creates a new blend table. This table will contain a blending effect, which you'll have to set afterwards, using the various functions. When that is done you can finally apply or assign the blendop to a graphic.

The source section of the blend table will be the normal object and the destination section will be cleared, removing translucency.

Returns

0	- Error: insufficient memory or the screen was not yet initialized.
!0	- Success (pointer to the blend table).

Notes

The right order of doing blending stuff: First create a new table with blendop_new(), then put a blending effect in it with for example blendop_tint(), and then assign it to a graphic with blendop_assign().

Errors

Insufficient memory

- There is insufficient memory available. This error doesn't occur often.

Example

Program test;
Private
    My_graphic;
    Blending_operation;
Begin
    Set_mode(320,240,16);
    Dump_type = complete_dump;

    x=160;
    y=120;

    My_graphic=new_map(100,100,16);
    Map_clear(0,My_graphic,RGB(255,255,255));

    graph=My_graphic;

    Loop
        If (key(_space))
            Blending_operation=Blendop_new();
            Blendop_tint(Blending_operation,1,255,0,0);
            Blendop_assign(0,My_graphic,Blending_operation);
        End
        Frame;
    End
End

Used in example: set_mode(), new_map(), map_clear(), key(), blendop_tint(), blendop_assign(), dump modes

This will result in something like:

Blendops Functions

• Blendop_apply() • Blendop_assign() • Blendop_free() • Blendop_grayscale() • Blendop_identity() • Blendop_intensity() • Blendop_new() • Blendop_swap() • Blendop_tint() • Blendop_translucency() •