transpose.glsl

/**
 * Returns the transpose of the matrix.  The input <code>matrix</code> can be
 * a <code>mat2</code>, <code>mat3</code>, or <code>mat4</code>.
 *
 * @name czm_transpose
 * @glslFunction
 *
 * @param {} matrix The matrix to transpose.
 *
 * @returns {} The transposed matrix.
 *
 * @example
 * // GLSL declarations
 * mat2 czm_transpose(mat2 matrix);
 * mat3 czm_transpose(mat3 matrix);
 * mat4 czm_transpose(mat4 matrix);
 *
 * // Transpose a 3x3 rotation matrix to find its inverse.
 * mat3 eastNorthUpToEye = czm_eastNorthUpToEyeCoordinates(
 *     positionMC, normalEC);
 * mat3 eyeToEastNorthUp = czm_transpose(eastNorthUpToEye);
 */
mat2 czm_transpose(mat2 matrix)
{
    return mat2(
        matrix[0][0], matrix[1][0],
        matrix[0][1], matrix[1][1]);
}

mat3 czm_transpose(mat3 matrix)
{
    return mat3(
        matrix[0][0], matrix[1][0], matrix[2][0],
        matrix[0][1], matrix[1][1], matrix[2][1],
        matrix[0][2], matrix[1][2], matrix[2][2]);
}

mat4 czm_transpose(mat4 matrix)
{
    return mat4(
        matrix[0][0], matrix[1][0], matrix[2][0], matrix[3][0],
        matrix[0][1], matrix[1][1], matrix[2][1], matrix[3][1],
        matrix[0][2], matrix[1][2], matrix[2][2], matrix[3][2],
        matrix[0][3], matrix[1][3], matrix[2][3], matrix[3][3]);
}