146 lines
6.6 KiB
C++
146 lines
6.6 KiB
C++
#include "Flow.hpp"
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#include "Print.hpp"
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#include <cmath>
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#include <assert.h>
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namespace Slic3r {
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// This static method returns a sane extrusion width default.
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static inline float auto_extrusion_width(FlowRole role, float nozzle_diameter, float height)
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{
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switch (role) {
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case frSupportMaterial:
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case frSupportMaterialInterface:
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case frTopSolidInfill:
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return nozzle_diameter;
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default:
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case frExternalPerimeter:
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case frPerimeter:
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case frSolidInfill:
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case frInfill:
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return 1.125f * nozzle_diameter;
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}
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}
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// This constructor builds a Flow object from an extrusion width config setting
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// and other context properties.
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Flow Flow::new_from_config_width(FlowRole role, const ConfigOptionFloatOrPercent &width, float nozzle_diameter, float height, float bridge_flow_ratio)
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{
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// we need layer height unless it's a bridge
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if (height <= 0 && bridge_flow_ratio == 0)
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CONFESS("Invalid flow height supplied to new_from_config_width()");
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float w;
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if (bridge_flow_ratio > 0) {
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// If bridge flow was requested, calculate the bridge width.
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height = w = (bridge_flow_ratio == 1.) ?
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// optimization to avoid sqrt()
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nozzle_diameter :
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sqrt(bridge_flow_ratio) * nozzle_diameter;
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} else if (! width.percent && width.value == 0.) {
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// If user left option to 0, calculate a sane default width.
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w = auto_extrusion_width(role, nozzle_diameter, height);
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} else {
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// If user set a manual value, use it.
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w = float(width.get_abs_value(height));
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}
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return Flow(w, height, nozzle_diameter, bridge_flow_ratio > 0);
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}
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// This constructor builds a Flow object from a given centerline spacing.
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Flow Flow::new_from_spacing(float spacing, float nozzle_diameter, float height, bool bridge)
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{
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// we need layer height unless it's a bridge
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if (height <= 0 && !bridge)
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CONFESS("Invalid flow height supplied to new_from_spacing()");
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// Calculate width from spacing.
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// For normal extrusons, extrusion width is wider than the spacing due to the rounding and squishing of the extrusions.
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// For bridge extrusions, the extrusions are placed with a tiny BRIDGE_EXTRA_SPACING gaps between the threads.
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float width = float(bridge ?
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(spacing - BRIDGE_EXTRA_SPACING) :
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#ifdef HAS_PERIMETER_LINE_OVERLAP
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(spacing + PERIMETER_LINE_OVERLAP_FACTOR * height * (1. - 0.25 * PI));
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#else
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(spacing + height * (1. - 0.25 * PI)));
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#endif
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return Flow(width, bridge ? width : height, nozzle_diameter, bridge);
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}
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// This method returns the centerline spacing between two adjacent extrusions
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// having the same extrusion width (and other properties).
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float Flow::spacing() const
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{
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#ifdef HAS_PERIMETER_LINE_OVERLAP
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if (this->bridge)
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return this->width + BRIDGE_EXTRA_SPACING;
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// rectangle with semicircles at the ends
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float min_flow_spacing = this->width - this->height * (1. - 0.25 * PI);
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return this->width - PERIMETER_LINE_OVERLAP_FACTOR * (this->width - min_flow_spacing);
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#else
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return float(this->bridge ? (this->width + BRIDGE_EXTRA_SPACING) : (this->width - this->height * (1. - 0.25 * PI)));
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#endif
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}
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// This method returns the centerline spacing between an extrusion using this
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// flow and another one using another flow.
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// this->spacing(other) shall return the same value as other.spacing(*this)
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float Flow::spacing(const Flow &other) const
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{
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assert(this->height == other.height);
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assert(this->bridge == other.bridge);
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return float(this->bridge ?
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0.5 * this->width + 0.5 * other.width + BRIDGE_EXTRA_SPACING :
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0.5 * this->spacing() + 0.5 * other.spacing());
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}
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// This method returns extrusion volume per head move unit.
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double Flow::mm3_per_mm() const
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{
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double res = this->bridge ?
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// Area of a circle with dmr of this->width.
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(this->width * this->width) * 0.25 * PI :
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// Rectangle with semicircles at the ends. ~ h (w - 0.215 h)
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this->height * (this->width - this->height * (1. - 0.25 * PI));
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assert(res > 0.);
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return res;
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}
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Flow support_material_flow(const PrintObject *object, float layer_height)
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{
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return Flow::new_from_config_width(
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frSupportMaterial,
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// The width parameter accepted by new_from_config_width is of type ConfigOptionFloatOrPercent, the Flow class takes care of the percent to value substitution.
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(object->config.support_material_extrusion_width.value > 0) ? object->config.support_material_extrusion_width : object->config.extrusion_width,
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// if object->config.support_material_extruder == 0 (which means to not trigger tool change, but use the current extruder instead), get_at will return the 0th component.
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float(object->print()->config.nozzle_diameter.get_at(object->config.support_material_extruder-1)),
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(layer_height > 0.f) ? layer_height : float(object->config.layer_height.value),
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false);
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}
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Flow support_material_1st_layer_flow(const PrintObject *object, float layer_height)
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{
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const auto &width = (object->print()->config.first_layer_extrusion_width.value > 0) ? object->print()->config.first_layer_extrusion_width : object->config.support_material_extrusion_width;
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return Flow::new_from_config_width(
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frSupportMaterial,
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// The width parameter accepted by new_from_config_width is of type ConfigOptionFloatOrPercent, the Flow class takes care of the percent to value substitution.
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(width.value > 0) ? width : object->config.extrusion_width,
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float(object->print()->config.nozzle_diameter.get_at(object->config.support_material_extruder-1)),
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(layer_height > 0.f) ? layer_height : float(object->config.first_layer_height.get_abs_value(object->config.layer_height.value)),
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false);
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}
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Flow support_material_interface_flow(const PrintObject *object, float layer_height)
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{
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return Flow::new_from_config_width(
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frSupportMaterialInterface,
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// The width parameter accepted by new_from_config_width is of type ConfigOptionFloatOrPercent, the Flow class takes care of the percent to value substitution.
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(object->config.support_material_extrusion_width > 0) ? object->config.support_material_extrusion_width : object->config.extrusion_width,
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// if object->config.support_material_interface_extruder == 0 (which means to not trigger tool change, but use the current extruder instead), get_at will return the 0th component.
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float(object->print()->config.nozzle_diameter.get_at(object->config.support_material_interface_extruder-1)),
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(layer_height > 0.f) ? layer_height : float(object->config.layer_height.value),
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false);
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}
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}
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