Function createSimplicialMesh

stackgl_modules/index.js:17939–18083

(gl, params)

}

function createSimplicialMesh(gl, params) {
  if (arguments.length === 1) {
    params = gl;
    gl = params.gl;
  }

  //enable derivatives for face normals
  var ext = gl.getExtension('OES_standard_derivatives') || gl.getExtension('MOZ_OES_standard_derivatives') || gl.getExtension('WEBKIT_OES_standard_derivatives')
  if (!ext)
    throw new Error('derivatives not supported')

  var triShader       = createMeshShader(gl)
  var lineShader      = createWireShader(gl)
  var pointShader     = createPointShader(gl)
  var pickShader      = createPickShader(gl)
  var pointPickShader = createPointPickShader(gl)
  var contourShader   = createContourShader(gl)

  var meshTexture       = createTexture(gl,
    ndarray(new Uint8Array([255,255,255,255]), [1,1,4]))
  meshTexture.generateMipmap()
  meshTexture.minFilter = gl.LINEAR_MIPMAP_LINEAR
  meshTexture.magFilter = gl.LINEAR

  var trianglePositions = createBuffer(gl)
  var triangleColors    = createBuffer(gl)
  var triangleUVs       = createBuffer(gl)
  var triangleNormals   = createBuffer(gl)
  var triangleIds       = createBuffer(gl)
  var triangleVAO       = createVAO(gl, [
    { buffer: trianglePositions,
      type: gl.FLOAT,
      size: 3
    },
    { buffer: triangleIds,
      type: gl.UNSIGNED_BYTE,
      size: 4,
      normalized: true
    },
    { buffer: triangleColors,
      type: gl.FLOAT,
      size: 4
    },
    { buffer: triangleUVs,
      type: gl.FLOAT,
      size: 2
    },
    { buffer: triangleNormals,
      type: gl.FLOAT,
      size: 3
    }
  ])

  var edgePositions = createBuffer(gl)
  var edgeColors    = createBuffer(gl)
  var edgeUVs       = createBuffer(gl)
  var edgeIds       = createBuffer(gl)
  var edgeVAO       = createVAO(gl, [