Mesh

Supported platforms:
Available since: Gideros 2012.09
Inherits from: Sprite

Description

Mesh class is used to create and display custom constructed set of triangles (triangle meshes). It basically consists of 4 arrays:

• vertex
• index
• color (optional)
• textureCoordinate (optional)

and a texture (optional). The Mesh class provides more than one way to set/modify these arrays.

Mesh can be 2D or 3D, the latter expects an additional Z coordinate in its vertices. Additionally, 3D meshes and their children are rendered with depth testing enabled, which prevents far objects to be drawn above nearest ones, irrespective of actual drawing order.

the Mesh class doesn't do bounds check. If an element at index array points to an non-existent vertex, the application may crash

Examples

Mesh usage:

local mesh = Mesh.new()
stage:addChild(mesh)
-- 1. vertex (0, 0)
-- 2. vertex (100, 0)
-- 3. vertex (100, 150)
-- 4. vertex (0, 150)
mesh:setVertexArray(0, 0,   100, 0,   100, 150,   0, 150)

-- 1. triangle from 1, 2 and 3 vertex
-- 2. triangle from 1, 3 and 4 vertex
mesh:setIndexArray(1, 2, 3,     1, 3, 4)

-- 1. vertex 0xff0000 color with 0.5 alpha
-- 2. vertex 0x00ff00 color with 0.7 alpha
-- 3. vertex 0x0000ff color with 1 alpha
-- 4. vertex 0xffff00 color with 0 alpha
mesh:setColorArray(0xff0000, 0.5, 0x00ff00, 0.7, 0x0000ff, 1.0, 0xffff00, 0)

Methods Mesh.new creates a new Mesh instance Mesh:clearColorArray clears the color array Mesh:clearIndexArray clears the index array Mesh:clearTexture clears the Mesh texture Mesh:clearTextureCoordinateArray clears the texture coordinate array Mesh:clearVertexArray clears the vertex array Mesh:getColor returns color and alpha of the i-th element from color array Mesh:getColorArraySize gets the size of the Color array Mesh:getIndex returns the i-th element from index array Mesh:getIndexArraySize gets the size of the Index array Mesh:getTextureCoordinate returns u and v coordinate of the i-th element from texture coordinate array Mesh:getTextureCoordinateArraySize gets the size of the Texture Coordinate array Mesh:getVertex returns x and y coordinate of the i-th element from vertex array Mesh:getVertexArraySize gets the size of the Vertices array Mesh:resizeColorArray resizes the size of the Color array Mesh:resizeIndexArray resizes the size of the Index array Mesh:resizeTextureCoordinateArray Mesh:resizeVertexArray Mesh:setColor Mesh:setColorArray Mesh:setColors Mesh:setGenericArray Mesh:setIndex Mesh:setIndexArray Mesh:setIndices Mesh:setTexture Mesh:setTextureCoordinate Mesh:setTextureCoordinateArray Mesh:setTextureCoordinates Mesh:setVertex Mesh:setVertexArray Mesh:setVertices

Events Constants

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