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Add EXTRAPOLATE_BEYOND_GRID option to bilinear leveling

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This commit is contained in:
Scott Lahteine
2017-05-04 00:19:07 -05:00
parent e1b85ff67b
commit da08e11acd
25 changed files with 118 additions and 4 deletions
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26
Marlin/Marlin_main.cpp
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@@ -10592,12 +10592,25 @@ void ok_to_send() {
const float x = RAW_X_POSITION(logical[X_AXIS]) - bilinear_start[X_AXIS],
y = RAW_Y_POSITION(logical[Y_AXIS]) - bilinear_start[Y_AXIS];
#if ENABLED(EXTRAPOLATE_BEYOND_GRID)
// Keep using the last grid box
#define FAR_EDGE_OR_BOX 2
#else
// Just use the grid far edge
#define FAR_EDGE_OR_BOX 1
#endif
if (last_x != x) {
last_x = x;
ratio_x = x * ABL_BG_FACTOR(X_AXIS);
const float gx = constrain(floor(ratio_x), 0, ABL_BG_POINTS_X - 1);
const float gx = constrain(floor(ratio_x), 0, ABL_BG_POINTS_X - FAR_EDGE_OR_BOX);
ratio_x -= gx; // Subtract whole to get the ratio within the grid box
NOLESS(ratio_x, 0); // Never < 0.0. (> 1.0 is ok when nextx==gridx.)
#if DISABLED(EXTRAPOLATE_BEYOND_GRID)
// Beyond the grid maintain height at grid edges
NOLESS(ratio_x, 0); // Never < 0.0. (> 1.0 is ok when nextx==gridx.)
#endif
gridx = gx;
nextx = min(gridx + 1, ABL_BG_POINTS_X - 1);
}
@@ -10607,9 +10620,14 @@ void ok_to_send() {
if (last_y != y) {
last_y = y;
ratio_y = y * ABL_BG_FACTOR(Y_AXIS);
const float gy = constrain(floor(ratio_y), 0, ABL_BG_POINTS_Y - 1);
const float gy = constrain(floor(ratio_y), 0, ABL_BG_POINTS_Y - FAR_EDGE_OR_BOX);
ratio_y -= gy;
NOLESS(ratio_y, 0);
#if DISABLED(EXTRAPOLATE_BEYOND_GRID)
// Beyond the grid maintain height at grid edges
NOLESS(ratio_y, 0); // Never < 0.0. (> 1.0 is ok when nexty==gridy.)
#endif
gridy = gy;
nexty = min(gridy + 1, ABL_BG_POINTS_Y - 1);
}