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Merge pull request #8718 from Bob-the-Kuhn/1.1x-planner-speed-improvemenr

[bugfix-1.1.x] minor planner.cpp speed improvement (follow up to COREXY stutter changes PR #8697)
Bob-the-Kuhn 7 years ago
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1 changed files with 2 additions and 1 deletions
  1. 2
    1
      Marlin/planner.cpp

+ 2
- 1
Marlin/planner.cpp View File

@@ -1081,7 +1081,8 @@ void Planner::_buffer_steps(const int32_t (&target)[XYZE], float fr_mm_s, const
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   float max_stepper_speed = 0, min_axis_accel_ratio = 1; // ratio < 1 means acceleration ramp needed
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   LOOP_XYZE(i) {
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     const float cs = FABS((current_speed[i] = delta_mm[i] * inverse_secs));
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-    NOMORE(min_axis_accel_ratio, max_jerk[i] / cs);
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+    if (cs >  max_jerk[i]) 
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+      NOMORE(min_axis_accel_ratio, max_jerk[i] / cs);
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     NOLESS(max_stepper_speed, cs);
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     #if ENABLED(DISTINCT_E_FACTORS)
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       if (i == E_AXIS) i += extruder;

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