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Fix logic of UBL::fade_scaling_factor_for_z

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This commit is contained in:
Scott Lahteine 2017-04-01 22:29:35 -05:00
parent a7aa70e79a
commit 7310110ec0
4 changed files with 17 additions and 26 deletions
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4
Marlin/Marlin_main.cpp
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@ -10175,6 +10175,8 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
/**
* Prepare a linear move in a Cartesian setup.
* If Mesh Bed Leveling is enabled, perform a mesh move.
*
* Returns true if the caller didn't update current_position.
*/
inline bool prepare_move_to_destination_cartesian() {
// Do not use feedrate_percentage for E or Z only moves
@ -10190,9 +10192,7 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
else
#elif ENABLED(AUTO_BED_LEVELING_UBL)
if (ubl.state.active) {
ubl_line_to_destination(MMS_SCALED(feedrate_mm_s), active_extruder);
return false;
}
else

29
Marlin/UBL.h
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@ -98,9 +98,6 @@
float g29_correction_fade_height = 10.0,
g29_fade_height_multiplier = 1.0 / 10.0; // It's cheaper to do a floating point multiply than divide,
// so keep this value and its reciprocal.
#else
const float g29_correction_fade_height = 10.0,
g29_fade_height_multiplier = 1.0 / 10.0;
#endif
// If you change this struct, adjust TOTAL_STRUCT_SIZE
@ -118,8 +115,7 @@
class unified_bed_leveling {
private:
static float last_specified_z,
fade_scaling_factor_for_current_height;
static float last_specified_z;
public:
@ -307,32 +303,29 @@
}
/**
* This routine is used to scale the Z correction depending upon the current nozzle height. It is
* optimized for speed. It avoids floating point operations by checking if the requested scaling
* factor is going to be the same as the last time the function calculated a value. If so, it just
* returns it.
* This function sets the Z leveling fade factor based on the given Z height,
* only re-calculating when necessary.
*
* It returns a scaling factor of 1.0 if UBL is inactive.
* It returns a scaling factor of 0.0 if Z is past the specified 'Fade Height'
* Returns 1.0 if g29_correction_fade_height is 0.0.
* Returns 0.0 if Z is past the specified 'Fade Height'.
*/
#if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
static FORCE_INLINE float fade_scaling_factor_for_z(const float &lz) {
if (state.g29_correction_fade_height == 0.0) return 1.0;
static float fade_scaling_factor = 1.0;
const float rz = RAW_Z_POSITION(lz);
if (last_specified_z != rz) {
last_specified_z = rz;
fade_scaling_factor_for_current_height =
state.active && rz < state.g29_correction_fade_height
fade_scaling_factor =
rz < state.g29_correction_fade_height
? 1.0 - (rz * state.g29_fade_height_multiplier)
: 0.0;
}
return fade_scaling_factor_for_current_height;
return fade_scaling_factor;
}
#else
static constexpr float fade_scaling_factor_for_z(const float &lz) { UNUSED(lz); return 1.0; }
#endif
}; // class unified_bed_leveling

7
Marlin/UBL_Bed_Leveling.cpp
View File

@ -61,7 +61,6 @@
float unified_bed_leveling::z_values[UBL_MESH_NUM_X_POINTS][UBL_MESH_NUM_Y_POINTS],
unified_bed_leveling::last_specified_z,
unified_bed_leveling::fade_scaling_factor_for_current_height,
unified_bed_leveling::mesh_index_to_xpos[UBL_MESH_NUM_X_POINTS + 1], // +1 safety margin for now, until determinism prevails
unified_bed_leveling::mesh_index_to_ypos[UBL_MESH_NUM_Y_POINTS + 1];
@ -102,8 +101,9 @@
* updated, but until then, we try to ease the transition
* for our Beta testers.
*/
if (ubl.state.g29_fade_height_multiplier != 1.0 / ubl.state.g29_correction_fade_height) {
ubl.state.g29_fade_height_multiplier = 1.0 / ubl.state.g29_correction_fade_height;
const float recip = ubl.state.g29_correction_fade_height ? 1.0 / ubl.state.g29_correction_fade_height : 1.0;
if (ubl.state.g29_fade_height_multiplier != recip) {
ubl.state.g29_fade_height_multiplier = recip;
store_state();
}
#endif
@ -160,7 +160,6 @@
ZERO(z_values);
last_specified_z = -999.9;
fade_scaling_factor_for_current_height = 0.0;
}
void unified_bed_leveling::invalidate() {

3
Marlin/UBL_G29.cpp
View File

@ -1132,8 +1132,7 @@
safe_delay(50);
#if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
SERIAL_PROTOCOLPAIR("g29_correction_fade_height : ", ubl.state.g29_correction_fade_height);
SERIAL_EOL;
SERIAL_PROTOCOLLNPAIR("g29_correction_fade_height : ", ubl.state.g29_correction_fade_height);
#endif
SERIAL_PROTOCOLPGM("z_offset: ");