Three-dimensional arrow

18) A method of determining a collision involving a view point in a digital mockup scene and an object comprising the scene, the method comprising:

• applying rotations to the viewpoint;
• redrawing the scene;
• computing translation along a sight direction;
• testing a point determined by the sight direction translation computation against a depth buffer;
• and
• resetting the viewpoint speed and ceasing translation responsive to the test determining a surface traversal will occur.

20) Computer executable code stored on a computer readable medium for guiding flight through a digital mockup object scene generated on a display, the code causing a computer to take steps comprising:

• forming a three dimensional graphical figure on the display to represent a trajectory responsive to positioning of a viewpoint with an input device;
• bending the three dimensional graphical figure responsive to rotation speed of a viewpoint;
• and
• stretching the three dimensional graphical figure responsive to an increase in viewpoint translation speed.

23) A computer data signal embodied in a digital data stream comprising data including a representation of a three dimensional graphical figure, wherein the computer data signal is generated by a method comprising the steps of:

• forming a three dimensional graphical figure on the display to represent a trajectory responsive to positioning of a viewpoint with an input device;
• bending the three dimensional graphical figure responsive to rotation speed of the viewpoint;
• and
• stretching the three dimensional graphical figure responsive to an increase in viewpoint translation speed.