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Follow-up to 2e250c1463c5d8e8bc94d0769e3e82d648e99e3b

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2f638058570197aa2832d0343148741ad6dbba6b
The issue was caused by 2e250c1463c5d8e8bc94d0769e3e82d648e99e3b
that did not do the binning of floating values well for small numbers,
small numbers were rounded to zero.
The new code now rounds to two significant digits similarly to
sprintf(buf, "%.2g", value)
This commit is contained in:
Vojtech Bubnik 2021-12-20 14:47:43 +01:00
parent cce960673f
commit 942c6ea7d8
1 changed files with 17 additions and 12 deletions
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29
src/slic3r/GUI/GCodeViewer.cpp
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@ -73,14 +73,19 @@ static std::vector<std::array<float, 4>> decode_colors(const std::vector<std::st
return output; return output;
} }
static float round_to_nearest_percent(float value) // Round to a bin with minimum two digits resolution.
// Equivalent to conversion to string with sprintf(buf, "%.2g", value) and conversion back to float, but faster.
static float round_to_bin(const float value)
{ {
return std::round(value * 100.f) * 0.01f; assert(value > 0);
} constexpr float const scale [5] = { 100.f, 1000.f, 10000.f, 100000.f, 1000000.f };
constexpr float const invscale [5] = { 0.01f, 0.001f, 0.0001f, 0.00001f, 0.000001f };
static float round_to_nearest_perthousand(float value) constexpr float const threshold[5] = { 0.095f, 0.0095f, 0.00095f, 0.000095f, 0.0000095f };
{ // Scaling factor, pointer to the tables above.
return std::round(value * 1000.f) * 0.001f; int i = 0;
// While the scaling factor is not yet large enough to get two integer digits after scaling and rounding:
for (; value < threshold[i] && i < 4; ++ i) ;
return std::round(value * scale[i]) * invscale[i];
} }
void GCodeViewer::VBuffer::reset() void GCodeViewer::VBuffer::reset()
@ -143,7 +148,7 @@ bool GCodeViewer::Path::matches(const GCodeProcessorResult::MoveVertex& move) co
// use rounding to reduce the number of generated paths // use rounding to reduce the number of generated paths
return type == move.type && extruder_id == move.extruder_id && cp_color_id == move.cp_color_id && role == move.extrusion_role && return type == move.type && extruder_id == move.extruder_id && cp_color_id == move.cp_color_id && role == move.extrusion_role &&
move.position.z() <= sub_paths.front().first.position.z() && feedrate == move.feedrate && fan_speed == move.fan_speed && move.position.z() <= sub_paths.front().first.position.z() && feedrate == move.feedrate && fan_speed == move.fan_speed &&
height == round_to_nearest_perthousand(move.height) && width == round_to_nearest_percent(move.width) && height == round_to_bin(move.height) && width == round_to_bin(move.width) &&
matches_percent(volumetric_rate, move.volumetric_rate(), 0.05f); matches_percent(volumetric_rate, move.volumetric_rate(), 0.05f);
} }
case EMoveType::Travel: { case EMoveType::Travel: {
@ -176,7 +181,7 @@ void GCodeViewer::TBuffer::add_path(const GCodeProcessorResult::MoveVertex& move
Path::Endpoint endpoint = { b_id, i_id, s_id, move.position }; Path::Endpoint endpoint = { b_id, i_id, s_id, move.position };
// use rounding to reduce the number of generated paths // use rounding to reduce the number of generated paths
paths.push_back({ move.type, move.extrusion_role, move.delta_extruder, paths.push_back({ move.type, move.extrusion_role, move.delta_extruder,
round_to_nearest_perthousand(move.height), round_to_nearest_percent(move.width), round_to_bin(move.height), round_to_bin(move.width),
move.feedrate, move.fan_speed, move.temperature, move.feedrate, move.fan_speed, move.temperature,
move.volumetric_rate(), move.extruder_id, move.cp_color_id, { { endpoint, endpoint } } }); move.volumetric_rate(), move.extruder_id, move.cp_color_id, { { endpoint, endpoint } } });
} }
@ -751,12 +756,12 @@ void GCodeViewer::refresh(const GCodeProcessorResult& gcode_result, const std::v
{ {
case EMoveType::Extrude: case EMoveType::Extrude:
{ {
m_extrusions.ranges.height.update_from(round_to_nearest_perthousand(curr.height)); m_extrusions.ranges.height.update_from(round_to_bin(curr.height));
m_extrusions.ranges.width.update_from(round_to_nearest_percent(curr.width)); m_extrusions.ranges.width.update_from(round_to_bin(curr.width));
m_extrusions.ranges.fan_speed.update_from(curr.fan_speed); m_extrusions.ranges.fan_speed.update_from(curr.fan_speed);
m_extrusions.ranges.temperature.update_from(curr.temperature); m_extrusions.ranges.temperature.update_from(curr.temperature);
if (curr.extrusion_role != erCustom || is_visible(erCustom)) if (curr.extrusion_role != erCustom || is_visible(erCustom))
m_extrusions.ranges.volumetric_rate.update_from(round_to_nearest_percent(curr.volumetric_rate())); m_extrusions.ranges.volumetric_rate.update_from(round_to_bin(curr.volumetric_rate()));
[[fallthrough]]; [[fallthrough]];
} }
case EMoveType::Travel: case EMoveType::Travel: