import QtQuick 2.1;
import "Defs3D.js" as Defs3D;

QtObject {
    id: rotation;

    property real   angle : 0.0;
    property string axis  : "";

    readonly property real c : Math.cos (angle * Math.PI / 180);
    readonly property real s : Math.sin (angle * Math.PI / 180);

    readonly property matrix4x4 matrix : {
        switch (axis) {
        case Defs3D.axisLeftToRight: // aka "X" in vectors
            return Qt.matrix4x4 (+1,  0,  0,  0,
                                  0, +c, -s,  0,
                                  0, +s, +c,  0,
                                  0,  0,  0, +1);
        case Defs3D.axisBottomToTop: // aka "Y" in vectors
            return Qt.matrix4x4 (+c,  0, +s,  0,
                                  0, +1,  0,  0,
                                 -s,  0, +c,  0,
                                  0,  0,  0, +1);
        case Defs3D.axisBackToFront: // aka "Z" in vectors
            return Qt.matrix4x4 (+c, -s,  0,  0,
                                 +s, +c,  0,  0,
                                  0,  0,  0, +1);
        }
    }
}