Method: Magick::Image#initialize

Defined in:

ext/RMagick/rmimage.c

#initialize(*args) ⇒ Object

Initialize a new Image object If the fill argument is omitted, fill with background color.

Ruby usage:

- @verbatim Image#initialize(cols,rows) @endverbatim
- @verbatim Image#initialize(cols,rows,fill) @endverbatim

Notes:

- Default fill is false

Parameters:

• argc —

  number of input arguments

• argv —

  array of input arguments

• self —

  this object

# File 'ext/RMagick/rmimage.c', line 9085

VALUE
Image_initialize(int argc, VALUE *argv, VALUE self)
{
    volatile VALUE fill = 0;
    Info *info;
    volatile VALUE info_obj;
    Image *image;
    unsigned long cols, rows;

    switch (argc)
    {
        case 3:
            fill = argv[2];
        case 2:
            rows = NUM2ULONG(argv[1]);
            cols = NUM2ULONG(argv[0]);
            break;
        default:
            rb_raise(rb_eArgError, "wrong number of arguments (%d for 2 or 3)", argc);
            break;
    }

    // Create a new Info object to use when creating this image.
    info_obj = rm_info_new();
    Data_Get_Struct(info_obj, Info, info);

    image = AcquireImage(info);
    if (!image)
    {
        rb_raise(rb_eNoMemError, "not enough memory to continue");
    }

    rm_set_user_artifact(image, info);

    // NOW store a real image in the image object.
    UPDATE_DATA_PTR(self, image);

    SetImageExtent(image, cols, rows);

    // If the caller did not supply a fill argument, call SetImageBackgroundColor
    // to fill the image using the background color. The background color can
    // be set by specifying it when creating the Info parm block.
    if (!fill)
    {
        (void) SetImageBackgroundColor(image);
    }
    // fillobj.fill(self)
    else
    {
        (void) rb_funcall(fill, rm_ID_fill, 1, self);
    }

    return self;
}