Figure 11: For a filled shape, polygon clipping to each extended cell gives the paths on the right; the dashed segments have no effect on our winding rule computation and are therefore ignored, whereas the red segments must be included. 5.3 Fast lattice-clipping algorithm Figure 11 shows an ...
For some inputs, ST_Intersection() could return an invalid polygon. (Bug #21658453) Spatial functions could simplify geometry values in contexts where the value might be used elsewhere in a query, producing incorrect results. (Bug #21652012) If ST_ConvexHull() or ST_SRID() were used in a...
An algorithm for the real-time computer generation of visual scenes reduces the processing of elevation data to simple repetitive accumulations and a compare opertion to generate occult data using gri
coils of one or more coil pairs may have a triangular or sector shape with an additional portion to cover the center area, while the detection coils of other coil pairs may have a trapezoidal or annulus sector shape to fill the remaining portions of the polygon or circle shaped scan area....