3D printing filling path generation method based on inclination optimization of scanning line

The invention discloses a 3D printing filling path generation method based on inclination optimization of a scanning line. The 3D printing filling path generation method specifically comprises the steps of a, determining suitable interval and layer thickness of filling paths according to the requirements of a 3D printing device and printing precision, and acquiring an SLC format of a to-be-processed entity through MagicRP software according to the layer thickness; b, generating contour offset paths with the interval of the filling paths adopted as offset distance, and offsetting the innermost offset path for 2 to 4 circles to obtain an offset polygon, wherein the innermost offset path of the offset polygon is obtained through one-time offsetting; and c, determining a layer number threshold value C1 according to the determined layer thickness and strength characteristics of a printing material, and carrying out following judgment on the to-be-processed entity. According to the method, the inclination of the sc