Struct lyon_tessellation::geometry_builder::BuffersBuilder [−][src]
pub struct BuffersBuilder<'l, OutputVertex: 'l, OutputIndex: 'l, Ctor> { /* fields omitted */ }
Expand description
A temporary view on a VertexBuffers
object which facilitate the population of vertex and index
data.
BuffersBuilders
record the vertex offset from when they are created so that algorithms using
them don’t need to worry about offsetting indices if some geometry was added beforehand. This
means that from the point of view of a BuffersBuilder
user, the first added vertex is at always
offset at the offset 0 and VertexBuilder
takes care of translating indices adequately.
Often, algorithms are built to generate vertex positions without knowledge of eventual other
vertex vertex. The VertexConstructor
does the translation from generic Input
to OutputVertex
.
If your logic generates the actual vertex type directly, you can use the SimpleBuffersBuilder
convenience typedef.
Implementations
impl<'l, OutputVertex: 'l, OutputIndex: 'l, Ctor> BuffersBuilder<'l, OutputVertex, OutputIndex, Ctor>
impl<'l, OutputVertex: 'l, OutputIndex: 'l, Ctor> BuffersBuilder<'l, OutputVertex, OutputIndex, Ctor>
Trait Implementations
impl<'l, OutputVertex, OutputIndex, Ctor> FillGeometryBuilder for BuffersBuilder<'l, OutputVertex, OutputIndex, Ctor> where
OutputVertex: 'l,
OutputIndex: Add + From<VertexId> + MaxIndex,
Ctor: FillVertexConstructor<OutputVertex>,
impl<'l, OutputVertex, OutputIndex, Ctor> FillGeometryBuilder for BuffersBuilder<'l, OutputVertex, OutputIndex, Ctor> where
OutputVertex: 'l,
OutputIndex: Add + From<VertexId> + MaxIndex,
Ctor: FillVertexConstructor<OutputVertex>,
fn add_fill_vertex(
&mut self,
vertex: FillVertex<'_>
) -> Result<VertexId, GeometryBuilderError>
fn add_fill_vertex(
&mut self,
vertex: FillVertex<'_>
) -> Result<VertexId, GeometryBuilderError>
Inserts a vertex, providing its position, and optionally a normal. Returns a vertex id that is only valid between begin_geometry and end_geometry. Read more
impl<'l, OutputVertex, OutputIndex, Ctor> GeometryBuilder for BuffersBuilder<'l, OutputVertex, OutputIndex, Ctor> where
OutputVertex: 'l,
OutputIndex: Add + From<VertexId> + MaxIndex,
impl<'l, OutputVertex, OutputIndex, Ctor> GeometryBuilder for BuffersBuilder<'l, OutputVertex, OutputIndex, Ctor> where
OutputVertex: 'l,
OutputIndex: Add + From<VertexId> + MaxIndex,
Called at the beginning of a generation. Read more
Called at the end of a generation. Returns the number of vertices and indices added since the last time begin_geometry was called. Read more
abort_geometry is called instead of end_geometry if an error occurred while producing the geometry and we won’t be able to finish. Read more
impl<'l, OutputVertex, OutputIndex, Ctor> StrokeGeometryBuilder for BuffersBuilder<'l, OutputVertex, OutputIndex, Ctor> where
OutputVertex: 'l,
OutputIndex: Add + From<VertexId> + MaxIndex,
Ctor: StrokeVertexConstructor<OutputVertex>,
impl<'l, OutputVertex, OutputIndex, Ctor> StrokeGeometryBuilder for BuffersBuilder<'l, OutputVertex, OutputIndex, Ctor> where
OutputVertex: 'l,
OutputIndex: Add + From<VertexId> + MaxIndex,
Ctor: StrokeVertexConstructor<OutputVertex>,
fn add_stroke_vertex(
&mut self,
v: StrokeVertex<'_, '_>
) -> Result<VertexId, GeometryBuilderError>
fn add_stroke_vertex(
&mut self,
v: StrokeVertex<'_, '_>
) -> Result<VertexId, GeometryBuilderError>
Inserts a vertex, providing its position, and optionally a normal. Returns a vertex id that is only valid between begin_geometry and end_geometry. Read more