Author: DavidCzech Date: 2008-07-17 15:00:48 -0400 (Thu, 17 Jul 2008) New Revision: 1326
Modified: trunk/pysoy/src/scenes/Landscape.pym Log: Ticket 929 : * Fixed Tangent Calculation Modified: trunk/pysoy/src/scenes/Landscape.pym =================================================================== --- trunk/pysoy/src/scenes/Landscape.pym 2008-07-16 04:59:17 UTC (rev 1325) +++ trunk/pysoy/src/scenes/Landscape.pym 2008-07-17 19:00:48 UTC (rev 1326) @@ -16,7 +16,7 @@ # along with this program; if not, see http://www.gnu.org/licenses # # $Id$ - +cimport stdlib cdef class Landscape (Scene) : ''' Landscape Scene @@ -97,6 +97,7 @@ cdef int _i, _j, _currentLoop, _offset cdef unsigned short _a, _b, _c, _d cdef double _v1[3], _v2[3], _normal[3], _normal2[3], _length + cdef double _u[3] # # Calculate positions and texcoords first for _i from 0 <= _i < self._heightmapTex._height : @@ -189,9 +190,18 @@ self._vertArray[_offset].nx = _normal[0] self._vertArray[_offset].ny = _normal[1] self._vertArray[_offset].nz = _normal[2] - self._vertArray[_offset].ux = 1 # Up - self._vertArray[_offset].uy = 0 - self._vertArray[_offset].uz = 0 + # q = 90 degrees in the x direction + # y' = y*cos q - z*sin q + # z' = y*sin q + z*cos q + # x' = x + #Rotate the whole normal, returns tangent + + _u[0] = self._vertArray[_offset].nx + _u[1] = (_normal[1]-self._vertArray[_offset].py) * stdlib.cosf(90) - (_normal[2]-self._vertArray[_offset].pz) * stdlib.sinf(90) + self._vertArray[_offset].py + _u[2] = (_normal[1]-self._vertArray[_offset].py) * stdlib.cosf(90) + (_normal[2]-self._vertArray[_offset].pz) * stdlib.sinf(90) + self._vertArray[_offset].pz + self._vertArray[_offset].ux = _u[0] + self._vertArray[_offset].uy = _u[1] + self._vertArray[_offset].uz = _u[2] #and finally, set up the face array to make all of the triangles _currentLoop = 0 @@ -313,4 +323,4 @@ in each group give the most radical angles the highest priority - so a steep angled triangle would be D in the above example er, sorry, the steepest would be A -""" +""" \ No newline at end of file _______________________________________________ PySoy-SVN mailing list PySoy-SVN@pysoy.org http://www.pysoy.org/mailman/listinfo/pysoy-svn
