Fix NAN mesh entries with ABL_BILINEAR_SUBDIVISION (#20143)
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@ -161,6 +161,14 @@ void print_bilinear_leveling_grid() {
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#define LINEAR_EXTRAPOLATION(E, I) ((E) * 2 - (I))
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float bed_level_virt_coord(const uint8_t x, const uint8_t y) {
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uint8_t ep = 0, ip = 1;
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if (x > GRID_MAX_POINTS_X + 1 || y > GRID_MAX_POINTS_Y + 1) {
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// The requested point requires extrapolating two points beyond the mesh.
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// These values are only requested for the edges of the mesh, which are always an actual mesh point,
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// and do not require interpolation. When interpolation is not needed, this "Mesh + 2" point is
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// cancelled out in bed_level_virt_cmr and does not impact the result. Return 0.0 rather than
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// making this function more complex by extrapolating two points.
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return 0.0;
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}
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if (!x || x == ABL_TEMP_POINTS_X - 1) {
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if (x) {
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ep = GRID_MAX_POINTS_X - 1;
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