Mesh

A Mesh is a single collection of triangular faces with extra surface information to enhance rendering! StereoKit meshes are composed of a list of vertices, and a list of indices to connect the vertices into faces. Nothing more than that is stored here, so typically meshes are combined with Materials, or added to Models in order to draw them.

Mesh vertices are composed of a position, a normal (direction of the vert), a uv coordinate (for mapping a texture to the mesh’s surface), and a 32 bit color containing red, green, blue, and alpha (transparency).

Mesh indices are stored as unsigned shorts, so they cap out at 65,535. This limits meshes to 65,535 vertices. I may change this to integers later, now that I think about it…

Instance Methods

   
Mesh Creates an empty Mesh asset. Use SetVerts and SetInds to add data to it!
Draw Adds a mesh to the render queue for this frame! If the Hierarchy has a transform on it, that transform is combined with the Matrix provided here.
SetInds Assigns the face indices for this Mesh! Faces are always triangles, there are only ever three indices per face. This function will create a index buffer object on the graphics card right away. If you’re calling this a second time, the buffer will be marked as dynamic and re-allocated. If you’re calling this a third time, the buffer will only re-allocate if the buffer is too small, otherwise it just copies in the data!
SetVerts Assigns the vertices for this Mesh! This will create a vertex buffer object on the graphics card right away. If you’re calling this a second time, the buffer will be marked as dynamic and re-allocated. If you’re calling this a third time, the buffer will only re-allocate if the buffer is too small, otherwise it just copies in the data!

Static Fields and Properties

   
Bounds Bounds This is a bounding box that encapsulates the Mesh! It’s used for collision, visibility testing, UI layout, and probably other things. While it’s normally cacluated from the mesh vertices, you can also override this to suit your needs.
bool KeepData Should StereoKit keep the mesh data on the CPU for later access, or collision detection? Defaults to true. If you set this to false before setting data, the data won’t be stored. If you call this after setting data, that stored data will be freed! If you set this to true again later on, it will not contain data until it’s set again.

Static Methods

   
Find Finds the Mesh with the matching id, and returns a reference to it. If no Mesh it found, it returns null.
GenerateCube Generates a flat-shaded cube mesh, pre-sized to the given dimensions. UV coordinates are projected flat on each face, 0,0 -> 1,1.
GenerateCylinder Generates a cylinder mesh, pre-sized to the given diameter and depth, UV coordinates are from a flattened top view right now. Additional development is needed for making better UVs for the edges.
GeneratePlane Generates a plane on the XZ axis facing up that is optionally subdivided, pre-sized to the given dimensions. UV coordinates start at 0,0 at the -X,-Z corer, and go to 1,1 at the +X,+Z corner!
GenerateRoundedCube Generates a cube mesh with rounded corners, pre-sized to the given dimensions. UV coordinates are 0,0 -> 1,1 on each face, meeting at the middle of the rounded corners.
GenerateSphere Generates a sphere mesh, pre-sized to the given diameter, created by sphereifying a subdivided cube! UV coordinates are taken from the initial unspherified cube.