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Firmware2/Marlin/src/feature/mixing.h
Thomas Moore c5e96544b5 Fix vtool compiler warning (#13476)
2019-03-24 20:02:28 -05:00

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/**
* Marlin 3D Printer Firmware
* Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#pragma once
#include "../inc/MarlinConfig.h"
//#define MIXER_NORMALIZER_DEBUG
#if !defined(__AVR__) // || DUAL_MIXING_EXTRUDER
// Use 16-bit (or fastest) data for the integer mix factors
typedef uint_fast16_t mixer_comp_t;
typedef uint_fast16_t mixer_accu_t;
#define COLOR_A_MASK 0x8000
#define COLOR_MASK 0x7FFF
#else
// Use 8-bit data for the integer mix factors
// Exactness is sacrificed for speed
#define MIXER_ACCU_SIGNED
typedef uint8_t mixer_comp_t;
typedef int8_t mixer_accu_t;
#define COLOR_A_MASK 0x80
#define COLOR_MASK 0x7F
#endif
typedef int8_t mixer_perc_t;
#ifndef MIXING_VIRTUAL_TOOLS
#define MIXING_VIRTUAL_TOOLS 1
#endif
enum MixTool {
FIRST_USER_VIRTUAL_TOOL = 0,
LAST_USER_VIRTUAL_TOOL = MIXING_VIRTUAL_TOOLS - 1,
NR_USER_VIRTUAL_TOOLS,
#ifdef RETRACT_SYNC_MIXING
MIXER_AUTORETRACT_TOOL = NR_USER_VIRTUAL_TOOLS,
NR_MIXING_VIRTUAL_TOOLS
#else
NR_MIXING_VIRTUAL_TOOLS = NR_USER_VIRTUAL_TOOLS
#endif
};
#ifdef RETRACT_SYNC_MIXING
static_assert(NR_MIXING_VIRTUAL_TOOLS <= 254, "MIXING_VIRTUAL_TOOLS must be <= 254!");
#else
static_assert(NR_MIXING_VIRTUAL_TOOLS <= 255, "MIXING_VIRTUAL_TOOLS must be <= 255!");
#endif
#define MIXER_STEPPER_LOOP(VAR) \
for (uint_fast8_t VAR = 0; VAR < MIXING_STEPPERS; VAR++)
#define MIXER_BLOCK_FIELD mixer_comp_t b_color[MIXING_STEPPERS]
#define MIXER_POPULATE_BLOCK() mixer.populate_block(block->b_color)
#define MIXER_STEPPER_SETUP() mixer.stepper_setup(current_block->b_color)
#if ENABLED(GRADIENT_MIX)
typedef struct {
bool enabled; // This gradient is enabled
mixer_comp_t color[MIXING_STEPPERS]; // The current gradient color
float start_z, end_z; // Region for gradient
int8_t start_vtool, end_vtool; // Start and end virtual tools
mixer_perc_t start_mix[MIXING_STEPPERS], // Start and end mixes from those tools
end_mix[MIXING_STEPPERS];
#if ENABLED(GRADIENT_VTOOL)
int8_t vtool_index; // Use this virtual tool number as index
#endif
} gradient_t;
#endif
/**
* @brief Mixer class
* @details Contains data and behaviors for a Mixing Extruder
*/
class Mixer {
public:
static float collector[MIXING_STEPPERS]; // M163 components, also editable from LCD
static void init(); // Populate colors at boot time
static void reset_vtools();
static void refresh_collector(const float proportion=1.0, const uint8_t t=selected_vtool);
// Used up to Planner level
FORCE_INLINE static void set_collector(const uint8_t c, const float f) { collector[c] = MAX(f, 0.0f); }
static void normalize(const uint8_t tool_index);
FORCE_INLINE static void normalize() { normalize(selected_vtool); }
FORCE_INLINE static uint8_t get_current_vtool() { return selected_vtool; }
FORCE_INLINE static void T(const uint_fast8_t c) {
selected_vtool = c;
#if ENABLED(GRADIENT_VTOOL)
refresh_gradient();
#endif
#if DUAL_MIXING_EXTRUDER
update_mix_from_vtool();
#endif
}
// Used when dealing with blocks
FORCE_INLINE static void populate_block(mixer_comp_t b_color[MIXING_STEPPERS]) {
#if ENABLED(GRADIENT_MIX)
if (gradient.enabled) {
MIXER_STEPPER_LOOP(i) b_color[i] = gradient.color[i];
return;
}
#endif
MIXER_STEPPER_LOOP(i) b_color[i] = color[selected_vtool][i];
}
FORCE_INLINE static void stepper_setup(mixer_comp_t b_color[MIXING_STEPPERS]) {
MIXER_STEPPER_LOOP(i) s_color[i] = b_color[i];
}
#if DUAL_MIXING_EXTRUDER || ENABLED(GRADIENT_MIX)
static mixer_perc_t mix[MIXING_STEPPERS]; // Scratch array for the Mix in proportion to 100
static inline void copy_mix_to_color(mixer_comp_t (&tcolor)[MIXING_STEPPERS]) {
// Scale each component to the largest one in terms of COLOR_A_MASK
// So the largest component will be COLOR_A_MASK and the other will be in proportion to it
const float scale = (COLOR_A_MASK) * RECIPROCAL(float(MAX(mix[0], mix[1])));
// Scale all values so their maximum is COLOR_A_MASK
MIXER_STEPPER_LOOP(i) tcolor[i] = mix[i] * scale;
#ifdef MIXER_NORMALIZER_DEBUG
SERIAL_ECHOLNPAIR("Mix [", int(mix[0]), ", ", int(mix[1]), "] to Color [", int(tcolor[0]), ", ", int(tcolor[1]), "]");
#endif
}
static inline void update_mix_from_vtool(const uint8_t j=selected_vtool) {
float ctot = 0;
MIXER_STEPPER_LOOP(i) ctot += color[j][i];
//MIXER_STEPPER_LOOP(i) mix[i] = 100.0f * color[j][i] / ctot;
mix[0] = mixer_perc_t(100.0f * color[j][0] / ctot);
mix[1] = 100 - mix[0];
#ifdef MIXER_NORMALIZER_DEBUG
SERIAL_ECHOLNPAIR("V-tool ", int(j), " [", int(color[j][0]), ", ", int(color[j][1]), "] to Mix [", int(mix[0]), ", ", int(mix[1]), "]");
#endif
}
#endif // DUAL_MIXING_EXTRUDER || GRADIENT_MIX
#if DUAL_MIXING_EXTRUDER
// Update the virtual tool from an edited mix
static inline void update_vtool_from_mix() {
copy_mix_to_color(color[selected_vtool]);
#if ENABLED(GRADIENT_MIX)
refresh_gradient();
#endif
// MIXER_STEPPER_LOOP(i) collector[i] = mix[i];
// normalize();
}
#endif // DUAL_MIXING_EXTRUDER
#if ENABLED(GRADIENT_MIX)
static gradient_t gradient;
static float prev_z;
// Update the current mix from the gradient for a given Z
static void update_gradient_for_z(const float z);
static void update_gradient_for_planner_z();
static inline void gradient_control(const float z) {
if (gradient.enabled) {
if (z >= gradient.end_z)
T(gradient.end_vtool);
else
update_gradient_for_z(z);
}
}
static inline void update_mix_from_gradient() {
float ctot = 0;
MIXER_STEPPER_LOOP(i) ctot += gradient.color[i];
mix[0] = (mixer_perc_t)CEIL(100.0f * gradient.color[0] / ctot);
mix[1] = 100 - mix[0];
#ifdef MIXER_NORMALIZER_DEBUG
SERIAL_ECHOLNPAIR("Gradient [", int(gradient.color[0]), ", ", int(gradient.color[1]), "] to Mix [", int(mix[0]), ", ", int(mix[1]), "]");
#endif
}
// Refresh the gradient after a change
static void refresh_gradient() {
#if ENABLED(GRADIENT_VTOOL)
const bool is_grd = (gradient.vtool_index == -1 || selected_vtool == (uint8_t)gradient.vtool_index);
#else
constexpr bool is_grd = true;
#endif
gradient.enabled = is_grd && gradient.start_vtool != gradient.end_vtool && gradient.start_z < gradient.end_z;
if (gradient.enabled) {
mixer_perc_t mix_bak[MIXING_STEPPERS];
COPY(mix_bak, mix);
update_mix_from_vtool(gradient.start_vtool);
COPY(gradient.start_mix, mix);
update_mix_from_vtool(gradient.end_vtool);
COPY(gradient.end_mix, mix);
update_gradient_for_planner_z();
COPY(mix, mix_bak);
prev_z = -1;
}
}
#endif // GRADIENT_MIX
// Used in Stepper
FORCE_INLINE static uint8_t get_stepper() { return runner; }
FORCE_INLINE static uint8_t get_next_stepper() {
for (;;) {
if (--runner < 0) runner = MIXING_STEPPERS - 1;
accu[runner] += s_color[runner];
if (
#ifdef MIXER_ACCU_SIGNED
accu[runner] < 0
#else
accu[runner] & COLOR_A_MASK
#endif
) {
accu[runner] &= COLOR_MASK;
return runner;
}
}
}
private:
// Used up to Planner level
static uint_fast8_t selected_vtool;
static mixer_comp_t color[NR_MIXING_VIRTUAL_TOOLS][MIXING_STEPPERS];
// Used in Stepper
static int_fast8_t runner;
static mixer_comp_t s_color[MIXING_STEPPERS];
static mixer_accu_t accu[MIXING_STEPPERS];
};
extern Mixer mixer;
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