User:Le Forgeron/trace - Revision history

Le Forgeron: Created page with "{{User:Le_Forgeron/HgPovray38/available}} === UV data from user trace === * Returns the intersection point trace( OBJECT, POINT [, NORMAL_RETURN [, UV_RETURN ]] ) 2018-12-31T17:49:32Z Created page with "{{User:Le_Forgeron/HgPovray38/available}} === UV data from user trace === * Returns the intersection point <code>trace( OBJECT, POINT [, NORMAL_RETURN [, UV_RETURN ]] )</co..." New page {{User:Le_Forgeron/HgPovray38/available}} === UV data from user trace === * Returns the intersection point <code>trace( OBJECT, POINT [, NORMAL_RETURN [, UV_RETURN ]] )</code> as a vector ** <code>UV_RETURN</code> is a vector whose content get the UV value at the intersection point * Returns UV value at the intersection point <code>trace_uv( OJECT, POINT, DIRECTION )</code> as a vector <source lang="pov"> #version 3.8; global_settings{ assumed_gamma 1.0 } #declare Object = sphere { 0, 2 } #declare Start = <0,4,0>; #declare Dir = -Start; #declare UV= trace_uv( Object, Start, Dir ); #declare Point=<0,0,0>; #declare Normal=<0,0,0>; #declare UV2=<0,0,0>; #declare Start = <0,0,4>; #declare Dir = -Start; #declare Point = trace( Object, Start, Dir, Normal, UV2 ); #debug concat("UV : <", vstr(2, UV, ", ", 0, 3 ), ">\n") #debug concat("\nPoint : <", vstr(3, Point, ", ", 0, 3 ), ">\n") #debug concat("Normal : <", vstr(3, Normal, ", ", 0, 3 ), ">\n") #debug concat("UV2 : <", vstr(2, UV2, ", ", 0, 3 ), ">\n") #declare Start = <4,0,0>; #declare Dir = -Start; #declare Point = trace( Object, Start, Dir, Normal ); #debug concat("\nPoint : <", vstr(3, Point, ", ", 0, 3 ), ">\n") #debug concat("Normal : <", vstr(3, Normal, ", ", 0, 3 ), ">\n") #declare Start = <4,4,0>; #declare Dir = -Start; #declare Point = trace( Object, Start, Dir ); #debug concat("\nPoint : <", vstr(3, Point, ", ", 0, 3 ), ">\n") </source>