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Add pre-calculated planner.e_factor

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Scott Lahteine 2017-11-10 02:38:53 -06:00
parent 24b302c001
commit 3293823642
11 changed files with 110 additions and 85 deletions
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27
Marlin/planner.cpp
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@ -91,6 +91,12 @@ float Planner::max_feedrate_mm_s[XYZE_N], // Max speeds in mm per second
uint8_t Planner::last_extruder = 0; // Respond to extruder change
#endif
int16_t Planner::flow_percentage[EXTRUDERS] = ARRAY_BY_EXTRUDERS1(100); // Extrusion factor for each extruder
float Planner::e_factor[EXTRUDERS], // The flow percentage and volumetric multiplier combine to scale E movement
Planner::filament_size[EXTRUDERS], // diameter of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder
Planner::volumetric_multiplier[EXTRUDERS]; // Reciprocal of cross-sectional area of filament (in mm^2). Pre-calculated to reduce computation in the planner
uint32_t Planner::max_acceleration_steps_per_s2[XYZE_N],
Planner::max_acceleration_mm_per_s2[XYZE_N]; // Use M201 to override by software
@ -521,6 +527,18 @@ void Planner::check_axes_activity() {
#endif
}
inline float calculate_volumetric_multiplier(const float &diameter) {
if (!parser.volumetric_enabled || diameter == 0) return 1.0;
return 1.0 / CIRCLE_AREA(diameter * 0.5);
}
void Planner::calculate_volumetric_multipliers() {
for (uint8_t i = 0; i < COUNT(filament_size); i++) {
volumetric_multiplier[i] = calculate_volumetric_multiplier(filament_size[i]);
refresh_e_factor(i);
}
}
#if PLANNER_LEVELING
/**
* rx, ry, rz - cartesian position in mm
@ -719,10 +737,8 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
long de = target[E_AXIS] - position[E_AXIS];
const float e_factor = volumetric_multiplier[extruder] * flow_percentage[extruder] * 0.01;
#if ENABLED(LIN_ADVANCE)
float de_float = e - position_float[E_AXIS];
float de_float = e - position_float[E_AXIS]; // Should this include e_factor?
#endif
#if ENABLED(PREVENT_COLD_EXTRUSION) || ENABLED(PREVENT_LENGTHY_EXTRUDE)
@ -740,8 +756,7 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
}
#endif // PREVENT_COLD_EXTRUSION
#if ENABLED(PREVENT_LENGTHY_EXTRUDE)
const int32_t de_mm = labs(de * e_factor);
if (de_mm > (int32_t)axis_steps_per_mm[E_AXIS_N] * (EXTRUDE_MAXLENGTH)) { // It's not important to get max. extrusion length in a precision < 1mm, so save some cycles and cast to int
if (labs(de * e_factor[extruder]) > (int32_t)axis_steps_per_mm[E_AXIS_N] * (EXTRUDE_MAXLENGTH)) { // It's not important to get max. extrusion length in a precision < 1mm, so save some cycles and cast to int
position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
de = 0; // no difference
#if ENABLED(LIN_ADVANCE)
@ -782,7 +797,7 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
#endif
if (de < 0) SBI(dm, E_AXIS);
const float esteps_float = de * e_factor;
const float esteps_float = de * e_factor[extruder];
const int32_t esteps = abs(esteps_float) + 0.5;
// Calculate the buffer head after we push this byte