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Fix for G2/G3 negative radius 

As suggested in #4940
pull/1/head
Scott Lahteine 8 years ago
committed by GitHub
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1 changed files with 1 additions and 1 deletions
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  1. 2
      Marlin/Marlin_main.cpp

2
Marlin/Marlin_main.cpp
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@ -2796,7 +2796,7 @@ inline void gcode_G0_G1(
x1 = current_position[X_AXIS], y1 = current_position[Y_AXIS], x1 = current_position[X_AXIS], y1 = current_position[Y_AXIS],
x2 = destination[X_AXIS], y2 = destination[Y_AXIS]; x2 = destination[X_AXIS], y2 = destination[Y_AXIS];
if (r && (x2 != x1 || y2 != y1)) { if (r && (x2 != x1 || y2 != y1)) {
const float e = clockwise ? -1 : 1, // clockwise -1, counterclockwise 1 const float e = clockwise ^ (r < 0) ? -1 : 1, // clockwise -1/1, counterclockwise 1/-1
dx = x2 - x1, dy = y2 - y1, // X and Y differences dx = x2 - x1, dy = y2 - y1, // X and Y differences
d = HYPOT(dx, dy), // Linear distance between the points d = HYPOT(dx, dy), // Linear distance between the points
h = sqrt(sq(r) - sq(d * 0.5)), // Distance to the arc pivot-point h = sqrt(sq(r) - sq(d * 0.5)), // Distance to the arc pivot-point

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