Enum pdfium_render::page_object_path::PdfPathFillMode

pub enum PdfPathFillMode {
    None,
    EvenOdd,
    Winding,
}

Sets the method used to determine the path region to fill.

The default fill mode used by pdfium-render when creating new PdfPagePathObject instances is PdfPathFillMode::Winding. The fill mode can be changed on an object-by-object basis by calling the PdfPagePathObject::set_fill_and_stroke_mode() function.

Variants

None

The path will not be filled.

EvenOdd

The even-odd rule will be used to determine the path region to fill.

The even-odd rule determines whether a point is inside a path by drawing a ray from that point in any direction and simply counting the number of path segments that cross the ray, regardless of direction. If this number is odd, the point is inside; if even, the point is outside. This yields the same results as the nonzero winding number rule for paths with simple shapes, but produces different results for more complex shapes.

More information, including visual examples, can be found in Section 4.4.2 of the PDF Reference Manual, version 1.7, on page 233.

Winding

The non-zero winding number rule will be used to determine the path region to fill.

The nonzero winding number rule determines whether a given point is inside a path by conceptually drawing a ray from that point to infinity in any direction and then examining the places where a segment of the path crosses the ray. Start- ing with a count of 0, the rule adds 1 each time a path segment crosses the ray from left to right and subtracts 1 each time a segment crosses from right to left. After counting all the crossings, if the result is 0, the point is outside the path; otherwise, it is inside.

This is the default fill mode used by pdfium-render when creating new PdfPagePathObject instances. The fill mode can be changed on an object-by-object basis by calling the PdfPagePathObject::set_fill_and_stroke_mode() function.

More information, including visual examples, can be found in Section 4.4.2 of the PDF Reference Manual, version 1.7, on page 232.

Trait Implementations

impl Clone for PdfPathFillMode

fn clone(&self) -> PdfPathFillMode

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PdfPathFillMode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PdfPathFillMode

fn default() -> Self

Returns the default fill mode used when creating new PdfPagePathObject instances. The fill mode can be changed on an object-by-object basis by calling the PdfPagePathObject::set_fill_and_stroke_mode() function.

impl PartialEq<PdfPathFillMode> for PdfPathFillMode

fn eq(&self, other: &PdfPathFillMode) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for PdfPathFillMode

impl StructuralPartialEq for PdfPathFillMode