Struct epaint::tessellator::Tessellator

pub struct Tessellator { /* private fields */ }

Converts Shapes into triangles (Mesh).

For performance reasons it is smart to reuse the same Tessellator.

Se also tessellate_shapes, a convenient wrapper around Tessellator.

Implementations

impl Tessellator

pub fn new(
pixels_per_point: f32,
options: TessellationOptions,
font_tex_size: [usize; 2],
prepared_discs: Vec<PreparedDisc>
) -> Self

Create a new Tessellator.

• font_tex_size: size of the font texture. Required to normalize glyph uv rectangles when tessellating text.
• prepared_discs: What TextureAtlas::prepared_discs returns. Can safely be set to an empty vec.

pub fn set_clip_rect(&mut self, clip_rect: Rect)

Set the Rect to use for culling.

pub fn round_to_pixel(&self, point: f32) -> f32

pub fn tessellate_clipped_shape(
&mut self,
clipped_shape: ClippedShape,
out_primitives: &mut Vec<ClippedPrimitive>
)

Tessellate a clipped shape into a list of primitives.

pub fn tessellate_shape(&mut self, shape: Shape, out: &mut Mesh)

Tessellate a single Shape into a Mesh.

This call can panic the given shape is of Shape::Vec or Shape::Callback. For that, use Self::tessellate_clipped_shape instead.

• shape: the shape to tessellate.
• out: triangles are appended to this.

pub fn tessellate_circle(&mut self, shape: CircleShape, out: &mut Mesh)

Tessellate a single CircleShape into a Mesh.

• shape: the circle to tessellate.
• out: triangles are appended to this.

pub fn tessellate_mesh(&mut self, mesh: &Mesh, out: &mut Mesh)

Tessellate a single Mesh into a Mesh.

• mesh: the mesh to tessellate.
• out: triangles are appended to this.

pub fn tessellate_line(
&mut self,
points: [Pos2; 2],
stroke: Stroke,
out: &mut Mesh
)

Tessellate a line segment between the two points with the given stoken into a Mesh.

• shape: the mesh to tessellate.
• out: triangles are appended to this.

pub fn tessellate_path(&mut self, path_shape: &PathShape, out: &mut Mesh)

Tessellate a single PathShape into a Mesh.

• path_shape: the path to tessellate.
• out: triangles are appended to this.

pub fn tessellate_rect(&mut self, rect: &RectShape, out: &mut Mesh)

Tessellate a single Rect into a Mesh.

• rect: the rectangle to tessellate.
• out: triangles are appended to this.

pub fn tessellate_text(&mut self, text_shape: &TextShape, out: &mut Mesh)

Tessellate a single TextShape into a Mesh.

• text_shape: the text to tessellate.
• out: triangles are appended to this.

pub fn tessellate_quadratic_bezier(
&mut self,
quadratic_shape: QuadraticBezierShape,
out: &mut Mesh
)

Tessellate a single QuadraticBezierShape into a Mesh.

• quadratic_shape: the shape to tessellate.
• out: triangles are appended to this.

pub fn tessellate_cubic_bezier(
&mut self,
cubic_shape: CubicBezierShape,
out: &mut Mesh
)

Tessellate a single CubicBezierShape into a Mesh.

• cubic_shape: the shape to tessellate.
• out: triangles are appended to this.