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Two index finding functions for MBL

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Scott Lahteine
2016-05-21 17:38:14 -07:00
parent 678cbad76a
commit a4ed988c60
4 changed files with 89 additions and 78 deletions
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66
Marlin/mesh_bed_leveling.h
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@ -37,33 +37,45 @@
void reset();
static FORCE_INLINE float get_x(int8_t i) { return MESH_MIN_X + (MESH_X_DIST) * i; }
static FORCE_INLINE float get_y(int8_t i) { return MESH_MIN_Y + (MESH_Y_DIST) * i; }
void set_z(int8_t ix, int8_t iy, float z) { z_values[iy][ix] = z; }
static FORCE_INLINE float get_probe_x(int8_t i) { return MESH_MIN_X + (MESH_X_DIST) * i; }
static FORCE_INLINE float get_probe_y(int8_t i) { return MESH_MIN_Y + (MESH_Y_DIST) * i; }
void set_z(int8_t px, int8_t py, float z) { z_values[py][px] = z; }
inline void zigzag(int8_t index, int8_t &ix, int8_t &iy) {
ix = index % (MESH_NUM_X_POINTS);
iy = index / (MESH_NUM_X_POINTS);
if (iy & 1) ix = (MESH_NUM_X_POINTS - 1) - ix; // Zig zag
inline void zigzag(int8_t index, int8_t &px, int8_t &py) {
px = index % (MESH_NUM_X_POINTS);
py = index / (MESH_NUM_X_POINTS);
if (py & 1) px = (MESH_NUM_X_POINTS - 1) - px; // Zig zag
}
void set_zigzag_z(int8_t index, float z) {
int8_t ix, iy;
zigzag(index, ix, iy);
set_z(ix, iy, z);
int8_t px, py;
zigzag(index, px, py);
set_z(px, py, z);
}
int8_t select_x_index(float x) {
for (uint8_t i = MESH_NUM_X_POINTS; i--;)
if (fabs(x - get_x(i)) <= (MESH_X_DIST) / 2)
return i;
int8_t cel_index_x(float x) {
int8_t cx = 1;
while (x > get_probe_x(cx) && cx < MESH_NUM_X_POINTS - 1) cx++; // For 3x3 range is 1 to 2
return cx - 1; // so this will return 0 - 1
}
int8_t cel_index_y(float y) {
int8_t cy = 1;
while (y > get_probe_y(cy) && cy < MESH_NUM_Y_POINTS - 1) cy++;
return cy - 1;
}
int8_t probe_index_x(float x) {
for (int8_t px = MESH_NUM_X_POINTS; px--;)
if (fabs(x - get_probe_x(px)) <= (MESH_X_DIST) / 2)
return px;
return -1;
}
int8_t select_y_index(float y) {
for (uint8_t i = MESH_NUM_Y_POINTS; i--;)
if (fabs(y - get_y(i)) <= (MESH_Y_DIST) / 2)
return i;
int8_t probe_index_y(float y) {
for (int8_t py = MESH_NUM_Y_POINTS; py--;)
if (fabs(y - get_probe_y(py)) <= (MESH_Y_DIST) / 2)
return py;
return -1;
}
@ -74,18 +86,18 @@
}
float get_z(float x0, float y0) {
int8_t x_index = select_x_index(x0);
int8_t y_index = select_y_index(y0);
if (x_index < 0 || y_index < 0) return z_offset;
int8_t cx = cel_index_x(x0),
cy = cel_index_y(y0);
if (cx < 0 || cy < 0) return z_offset;
float z1 = calc_z0(x0,
get_x(x_index), z_values[y_index][x_index],
get_x(x_index + 1), z_values[y_index][x_index + 1]);
get_probe_x(cx), z_values[cy][cx],
get_probe_x(cx + 1), z_values[cy][cx + 1]);
float z2 = calc_z0(x0,
get_x(x_index), z_values[y_index + 1][x_index],
get_x(x_index + 1), z_values[y_index + 1][x_index + 1]);
get_probe_x(cx), z_values[cy + 1][cx],
get_probe_x(cx + 1), z_values[cy + 1][cx + 1]);
float z0 = calc_z0(y0,
get_y(y_index), z1,
get_y(y_index + 1), z2);
get_probe_y(cy), z1,
get_probe_y(cy + 1), z2);
return z0 + z_offset;
}
};