PrimitiveBatch (Mibo)

PrimitiveBatch Type

Namespace: Mibo.Elmish.Graphics2D
Assembly: Mibo.MonoGame.dll
Base Type: obj
All Interfaces: IDisposable

Batch renderer for 2D primitive shapes using vertex arrays and GraphicsDevice.DrawUserPrimitives.

Mirrors raylib's primitive rendering (circles, rings, triangles, lines, polygons, etc.) on top of MonoGame. The batch accumulates vertices in managed arrays and flushes them as PrimitiveType groups. This avoids per-geometry GPU resource allocation; DrawUserPrimitives copies the current vertex span to the device on flush.

The renderer owns one PrimitiveBatch alongside its SpriteBatch. State transitions (camera changes, DrawImmediate) flush both batches before re-entering with updated transform settings.

Constructors

Constructor	Description
`PrimitiveBatch(graphicsDevice)` Full Usage: `PrimitiveBatch(graphicsDevice)` Parameters: graphicsDevice : `GraphicsDevice` Returns: `PrimitiveBatch`	graphicsDevice : `GraphicsDevice` Returns: `PrimitiveBatch`

Instance members

Instance member	Description
`this.AddLine` Full Usage: `this.AddLine` Parameters: start : `Vector2` end : `Vector2` color : `Color`	Adds a single line segment with the given color. start : `Vector2` end : `Vector2` color : `Color`
`this.AddLineStrip` Full Usage: `this.AddLineStrip` Parameters: points : `Vector2[]` color : `Color`	Adds a line strip with the given color. points : `Vector2[]` color : `Color`
`this.AddLineThick` Full Usage: `this.AddLineThick` Parameters: start : `Vector2` end : `Vector2` thickness : `float32` color : `Color`	Adds a thick line as a quad (two triangles) with the given thickness and color. start : `Vector2` end : `Vector2` thickness : `float32` color : `Color`
`this.AddTriangleFan` Full Usage: `this.AddTriangleFan` Parameters: points : `Vector2[]` - `points[0]` is the fan center; `points[1..]` are the rim vertices in order. `points.Length` must be at least 3. color : `Color` - Vertex color applied to every generated vertex. ?closeLoop : `bool` - When `true` (default), the last rim vertex is connected back to `points[1]`, closing the fan into a loop. Use `false` for open arcs (e.g. a partial circle sector) where connecting the ends would draw an unwanted chord across the mouth.	Adds a triangle fan by decomposing into a triangle list. points : `Vector2[]` `points[0]` is the fan center; `points[1..]` are the rim vertices in order. `points.Length` must be at least 3. color : `Color` Vertex color applied to every generated vertex. ?closeLoop : `bool` When `true` (default), the last rim vertex is connected back to `points[1]`, closing the fan into a loop. Use `false` for open arcs (e.g. a partial circle sector) where connecting the ends would draw an unwanted chord across the mouth.
`this.AddTriangleStrip` Full Usage: `this.AddTriangleStrip` Parameters: points : `Vector2[]` color : `Color`	Adds a triangle strip with the given color. points : `Vector2[]` color : `Color`
`this.AddTriangles` Full Usage: `this.AddTriangles` Parameters: verts : `VertexPositionColor[]`	Adds a triangle list with the given vertices. verts : `VertexPositionColor[]`
`this.Begin` Full Usage: `this.Begin` Parameters: matrix : `Matrix`	Begins a batch with the given world/camera transform. matrix : `Matrix`
`this.End` Full Usage: `this.End`	Ends the batch, flushing any remaining vertices.
`this.Flush` Full Usage: `this.Flush`	Flushes all buffered primitive groups to the GPU.
`this.LineWidth` Full Usage: `this.LineWidth`	Gets or sets the default thick-line width used by SetLineWidth.
`this.SetBlendState` Full Usage: `this.SetBlendState` Parameters: blend : `BlendState`	Changes the blend state applied during flush. blend : `BlendState`
`this.SetEffect` Full Usage: `this.SetEffect` Parameters: effect : `Effect voption`	Replaces the effect used during flush. ValueNone restores the internal BasicEffect. effect : `Effect voption`
`this.SetRasterizerState` Full Usage: `this.SetRasterizerState` Parameters: rasterizer : `RasterizerState`	Changes the rasterizer state applied during flush. rasterizer : `RasterizerState`
`this.SetTransform` Full Usage: `this.SetTransform` Parameters: matrix : `Matrix`	Changes the active world/camera transform mid-batch. Flushes pending vertices, updates the transform, then resumes. matrix : `Matrix`