jtBaseApp/node_modules/@cesium/engine/Source/Shaders/Builtin/Functions/valueTransform.glsl

/**
 * Transform metadata values following the EXT_structural_metadata spec
 * by multiplying by scale and adding the offset. Operations are always
 * performed component-wise, even for matrices.
 * 
 * @param {float|vec2|vec3|vec4|mat2|mat3|mat4} offset The offset to add
 * @param {float|vec2|vec3|vec4|mat2|mat3|mat4} scale The scale factor to multiply
 * @param {float|vec2|vec3|vec4|mat2|mat3|mat4} value The original value.
 *
 * @return {float|vec2|vec3|vec4|mat2|mat3|mat4} The transformed value of the same scalar/vector/matrix type as the input.
 */
float czm_valueTransform(float offset, float scale, float value) {
  return scale * value + offset;
}

vec2 czm_valueTransform(vec2 offset, vec2 scale, vec2 value) {
  return scale * value + offset;
}

vec3 czm_valueTransform(vec3 offset, vec3 scale, vec3 value) {
  return scale * value + offset;
}

vec4 czm_valueTransform(vec4 offset, vec4 scale, vec4 value) {
  return scale * value + offset;
}

mat2 czm_valueTransform(mat2 offset, mat2 scale, mat2 value) {
  return matrixCompMult(scale, value) + offset;
}

mat3 czm_valueTransform(mat3 offset, mat3 scale, mat3 value) {
  return matrixCompMult(scale, value) + offset;
}

mat4 czm_valueTransform(mat4 offset, mat4 scale, mat4 value) {
  return matrixCompMult(scale, value) + offset;
}