コード例 #1
0
        /// <summary>
        /// Snap rotate to some angle. Preserve scale and translation.
        /// </summary>
        /// <param name="mat"></param>
        /// <param name="angle">__ANGLE IS IN DEGREES__</param>
        /// <returns></returns>
        public static d2d.Matrix eSnapRotate(this d2d.Matrix mat, double angle)
        {
            // Graphics tries to work opposite of OpenGL, in Drawing2D:
            // PRE - multiply for local
            // post -multiply for global
            var curmat = mat.Elements;
            // get the vector components.
            var x_axis = new ai.Vector2D(curmat[0], curmat[1]);
            var y_axis = new ai.Vector2D(curmat[2], curmat[3]);
            // Get the scale of current matrix
            double x_len  = x_axis.Length();
            double y_len  = y_axis.Length();
            var    newmat = new d2d.Matrix();

            // Preserve scale and translation
            // This means: v*M = v*(S * R * T)
            newmat.Scale((float)x_len, (float)y_len);
            newmat.Rotate((float)angle);
            newmat.Translate(curmat[4], curmat[5]);
            return(newmat.Clone());
        }
コード例 #2
0
        /// <summary>
        /// Rescale the matrix. Preserve rotation and translation.
        /// </summary>
        /// <param name="mat"></param>
        /// <returns></returns>
        public static d2d.Matrix eSnapScale(this d2d.Matrix mat, double scale = 1.0)
        {
            var curmat = mat.Elements;
            // normalise the x and y axis to set scale to 1.0f
            var x_axis = new ai.Vector2D(curmat[0], curmat[1]);
            var y_axis = new ai.Vector2D(curmat[2], curmat[3]);

            x_axis.Normalize();
            y_axis.Normalize();
            // scale the axis
            x_axis.X *= (float)scale;
            x_axis.Y *= (float)scale;
            y_axis.X *= (float)scale;
            y_axis.Y *= (float)scale;
            // make new matrix with scale of 1.0f
            // Do not change the translation
            var newmat = new d2d.Matrix(x_axis[0], x_axis[1]
                                        , y_axis[0], y_axis[1]
                                        , curmat[4], curmat[5]
                                        );

            return(newmat.Clone());
        }
コード例 #3
0
 public static OpenTK.Vector2 ToOpenTKVector2(this Assimp.Vector2D vec2)
 {
     return(new OpenTK.Vector2(vec2.X, vec2.Y));
 }
 public static Vector2 ToNumerics(this Ai.Vector2D value) =>
 new Vector2(value.X, value.Y);
コード例 #5
0
 public static Vector2 ToNumerics(this Ai.Vector2D value)
 {
     return(new Vector2(value.X, value.Y));
 }