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//
// Created by Alan Freitas on 2020-07-07.
//
#include <cmath>
#include <matplot/axes_objects/line.h>
#include <matplot/core/axes_type.h>
#include <matplot/util/common.h>
#include <regex>
#include <sstream>
namespace matplot {
line::line(class axes_type *parent) : axes_object(parent) {}
line::line(class axes_type *parent, const std::vector<double> &y_data,
std::string_view line_spec)
: axes_object(parent), line_spec_(this, line_spec), y_data_(y_data) {}
line::line(class axes_type *parent, const std::vector<double> &x_data,
const std::vector<double> &y_data, std::string_view line_spec)
: axes_object(parent), line_spec_(this, line_spec), y_data_(y_data),
x_data_(x_data) {}
line::line(class axes_type *parent, const std::vector<double> &x_data,
const std::vector<double> &y_data,
const std::vector<double> &z_data, std::string_view line_spec)
: axes_object(parent), line_spec_(this, line_spec), y_data_(y_data),
x_data_(x_data), z_data_(z_data) {}
std::vector<line_spec::style_to_plot> line::styles_to_plot() {
std::vector<line_spec::style_to_plot> result;
// if it has a line...
if (line_spec_.has_line()) {
// ...and a marker
if (line_spec_.has_non_custom_marker()) {
if (line_spec_.line_and_marker_are_the_same_color()) {
if (marker_indices_.empty()) {
result.emplace_back(
line_spec::style_to_plot::plot_line_and_marker);
} else {
result.emplace_back(
line_spec::style_to_plot::plot_line_only);
result.emplace_back(
line_spec::style_to_plot::plot_marker_only);
}
} else {
result.emplace_back(
line_spec::style_to_plot::plot_line_only);
result.emplace_back(
line_spec::style_to_plot::plot_marker_only);
}
if (line_spec_.marker_face()) {
if (!line_spec_.marker_and_face_are_the_same_color()) {
result.emplace_back(
line_spec::style_to_plot::plot_marker_face_only);
}
}
} else {
// ...and no marker
result.emplace_back(line_spec::style_to_plot::plot_line_only);
}
} else {
// ...only a marker
if (line_spec_.has_non_custom_marker()) {
result.emplace_back(line_spec::style_to_plot::plot_marker_only);
if (line_spec_.marker_face() &&
!line_spec_.marker_and_face_are_the_same_color()) {
result.emplace_back(
line_spec::style_to_plot::plot_marker_face_only);
}
} else {
// has nothing, fallback to a solid line
result.emplace_back(line_spec::style_to_plot::plot_line_only);
}
}
// if we draw the line as impulse
if (impulse_ || fill_) {
// we cannot plot the line and marker together
auto it = std::find(result.begin(), result.end(),
line_spec::style_to_plot::plot_line_and_marker);
if (it != result.end()) {
result.erase(it);
result.emplace_back(line_spec::style_to_plot::plot_line_only);
result.emplace_back(line_spec::style_to_plot::plot_marker_only);
}
}
return result;
}
std::string line::plot_string() {
maybe_update_line_spec();
std::string res;
bool first = true;
for (const auto &style : styles_to_plot()) {
if (!first) {
res += ",";
}
const bool marker_size_is_variable = !marker_sizes_.empty();
const bool we_are_plotting_marker =
style != line_spec::style_to_plot::plot_line_only;
std::string str;
if (impulse_ && style == line_spec::style_to_plot::plot_line_only) {
str =
" '-' with impulse " + line_spec_.plot_string(style, false);
} else if (fill_ &&
style == line_spec::style_to_plot::plot_line_only) {
str = " '-' with filledcurves " +
line_spec_.plot_string(style, false);
} else {
str = " '-' " + line_spec_.plot_string(style, true);
}
if (marker_size_is_variable && we_are_plotting_marker) {
str = std::regex_replace(str,
std::regex(" pointsize \\d*\\.?\\d* "),
" pointsize variable ");
}
const bool color_is_variable = !marker_colors_.empty();
if (color_is_variable && we_are_plotting_marker) {
str = std::regex_replace(str,
std::regex(" linecolor rgb +[^ ]+ "),
" linecolor palette ");
}
if (use_y2_) {
str += " axes x1y2";
}
res += str;
if (first) {
first = false;
}
}
return res;
}
std::string line::legend_string(std::string_view title) {
if (line_spec_.has_line() && line_spec_.has_non_custom_marker()) {
return " keyentry " +
line_spec_.plot_string(
line_spec::style_to_plot::plot_line_and_marker) +
" title \"" + escape(title) + "\"";
} else if (line_spec_.has_line()) {
return " keyentry " +
line_spec_.plot_string(
line_spec::style_to_plot::plot_line_only) +
" title \"" + escape(title) + "\"";
} else {
return " keyentry " +
line_spec_.plot_string(
line_spec::style_to_plot::plot_marker_only) +
" title \"" + escape(title) + "\"";
}
}
std::string line::data_string() {
const bool markers_are_automatic = marker_indices_.empty();
// const bool has_line_and_marker = line_spec_.has_line() &&
// line_spec_.has_non_custom_marker(); const bool can_plot_together =
// markers_are_automatic &&
// line_spec_.can_plot_line_and_marker_together() &&
// has_line_and_marker; const bool needs_to_plot_twice =
// !can_plot_together && has_line_and_marker; size_t repetitions = 1 +
// needs_to_plot_twice;
const bool x_is_manual = !x_data_.empty();
std::stringstream ss;
for (const auto &style : styles_to_plot()) {
if (visible_) {
const bool data_is_for_markers =
style == line_spec::style_to_plot::plot_marker_only ||
style == line_spec::style_to_plot::plot_marker_face_only;
const bool only_at_marker_indices =
!markers_are_automatic && data_is_for_markers;
const size_t n_points = only_at_marker_indices
? marker_indices_.size()
: y_data_.size();
const bool marker_size_is_variable = !marker_sizes_.empty();
const bool we_are_plotting_markers =
style != line_spec::style_to_plot::plot_line_only;
const bool include_marker_size =
marker_size_is_variable && we_are_plotting_markers;
const double marker_size_denominator =
style == line_spec::style_to_plot::plot_marker_face_only
? 10
: 6;
const bool color_is_variable = !marker_colors_.empty();
const bool include_marker_color =
color_is_variable && we_are_plotting_markers;
for (size_t i = 0; i < n_points; ++i) {
size_t index =
only_at_marker_indices ? marker_indices_[i] : i;
double x_value = x_is_manual ? x_data_[index] : index + 1;
if (!std::isfinite(x_value) || !std::isfinite(y_data_[i])) {
ss << " \n";
continue;
}
ss << " " << x_value;
ss << " " << y_data_[index];
if (is_3d()) {
ss << " " << z_data_[index];
}
if (include_marker_size) {
ss << " "
<< marker_sizes_[index] / marker_size_denominator;
}
if (include_marker_color) {
ss << " " << marker_colors_[index];
}
ss << " \n";
}
}
ss << " "
<< "e\n";
}
return ss.str();
}
void line::maybe_update_line_spec() {
if (line_spec_.has_line() && !line_spec_.user_color()) {
// if user didn't set the color, get color from xlim
auto c = parent_->get_color_and_bump();
line_spec_.color(c);
} else if (line_spec_.has_non_custom_marker() &&
!line_spec_.user_color() &&
!line_spec_.marker_user_color()) {
auto c = parent_->get_color_and_bump();
line_spec_.marker_color(c);
}
}
double line::xmax() {
if (!is_polar()) {
if (x_data_.empty()) {
if (!y_data_.empty()) {
return static_cast<double>(y_data_.size() - 1);
} else {
return axes_object::xmax();
}
}
return *std::max_element(x_data_.begin(), x_data_.end());
} else {
// y = rho
if (parent_->r_axis().limits_mode_manual()) {
return +(parent_->r_axis().limits()[1] -
parent_->r_axis().limits()[0]);
}
auto [min_rho, max_rho] =
std::minmax_element(y_data_.begin(), y_data_.end());
if (max_rho != y_data_.end() && min_rho != y_data_.end()) {
return +round_polar_max(std::abs(*max_rho));
} else {
return 1;
}
}
}
double line::xmin() {
if (!is_polar()) {
if (x_data_.empty()) {
if (!y_data_.empty()) {
return 0;
} else {
return axes_object::xmin();
}
}
return *std::min_element(x_data_.begin(), x_data_.end());
} else {
// y = rho
if (parent_->r_axis().limits_mode_manual()) {
return -(parent_->r_axis().limits()[1] -
parent_->r_axis().limits()[0]);
}
auto [min_rho, max_rho] =
std::minmax_element(y_data_.begin(), y_data_.end());
if (max_rho != y_data_.end() && min_rho != y_data_.end()) {
return -round_polar_max(std::abs(*max_rho));
} else {
return -1;
}
}
}
double line::ymax() {
if (!is_polar()) {
if (y_data_.empty()) {
return axes_object::ymax();
}
return *std::max_element(y_data_.begin(), y_data_.end());
} else {
// y = rho
if (parent_->r_axis().limits_mode_manual()) {
return +(parent_->r_axis().limits()[1] -
parent_->r_axis().limits()[0]);
}
auto [min_rho, max_rho] =
std::minmax_element(y_data_.begin(), y_data_.end());
if (max_rho != y_data_.end() && min_rho != y_data_.end()) {
return +round_polar_max(std::abs(*max_rho));
} else {
return 1;
}
}
}
double line::ymin() {
if (!is_polar()) {
if (y_data_.empty()) {
return axes_object::ymin();
}
return *std::min_element(y_data_.begin(), y_data_.end());
} else {
// y = rho
if (parent_->r_axis().limits_mode_manual()) {
return -(parent_->r_axis().limits()[1] -
parent_->r_axis().limits()[0]);
}
auto [min_rho, max_rho] =
std::minmax_element(y_data_.begin(), y_data_.end());
if (max_rho != y_data_.end() && min_rho != y_data_.end()) {
return -round_polar_max(std::abs(*max_rho));
} else {
return -1;
}
}
}
enum axes_object::axes_category line::axes_category() {
if (z_data_.empty()) {
if (!polar_) {
return axes_object::axes_category::two_dimensional;
} else {
return axes_object::axes_category::polar;
}
} else {
return axes_object::axes_category::three_dimensional;
}
}
bool line::requires_colormap() { return !marker_colors_.empty(); }
class line &line::line_style(std::string_view str) {
line_spec_.parse_string(str);
touch();
return *this;
}
const line_spec &line::line_spec() const { return line_spec_; }
line_spec &line::line_spec() { return line_spec_; }
class line &line::line_spec(const class line_spec &line_spec) {
line_spec_ = line_spec;
touch();
return *this;
}
const std::vector<double> &line::y_data() const { return y_data_; }
class line &line::y_data(const std::vector<double> &y_data) {
y_data_ = y_data;
touch();
return *this;
}
const std::vector<double> &line::x_data() const { return x_data_; }
class line &line::x_data(const std::vector<double> &x_data) {
x_data_ = x_data;
touch();
return *this;
}
const std::vector<double> &line::z_data() const { return z_data_; }
class line &line::z_data(const std::vector<double> &z_data) {
z_data_ = z_data;
touch();
return *this;
}
const std::vector<size_t> &line::marker_indices() const {
return marker_indices_;
}
class line &
line::marker_indices(const std::vector<size_t> &marker_indices) {
marker_indices_ = marker_indices;
touch();
return *this;
}
bool line::visible() const { return visible_; }
class line &line::visible(bool visible) {
visible_ = visible;
touch();
return *this;
}
float line::line_width() const { return line_spec().line_width(); }
class line &line::line_width(float line_width) {
line_spec().line_width(line_width);
return *this;
}
enum line_spec::marker_style line::marker_style() const {
return line_spec().marker();
}
enum line_spec::marker_style line::marker() const {
return line_spec().marker();
}
float line::marker_size() const { return line_spec().marker_size(); }
class line &line::marker_size(float size) {
line_spec().marker_size(size);
return *this;
}
class line &line::marker_size(const std::vector<float> &size_vector) {
marker_sizes_ = size_vector;
touch();
return *this;
}
class line &line::marker_size(const std::vector<double> &size_vector) {
std::vector<float> size_vector_float(size_vector.size());
std::transform(size_vector.begin(), size_vector.end(),
size_vector_float.begin(),
[](const double &x) { return static_cast<float>(x); });
marker_size(size_vector_float);
return *this;
}
bool line::marker_face() const { return line_spec().marker_face(); }
class line &line::marker_face(bool marker_face) {
line_spec().marker_face(marker_face);
return *this;
}
const std::array<float, 4> &line::color() const {
return line_spec().color();
}
const std::array<float, 4> &line::marker_color() const {
return line_spec().marker_color();
}
const std::array<float, 4> &line::marker_face_color() const {
return line_spec().marker_face_color();
}
bool line::use_y2() const { return use_y2_; }
class line &line::use_y2(bool use_y_2) {
use_y2_ = use_y_2;
if (!parent()->y2_axis().visible()) {
parent()->y2_axis().visible(true);
parent()->y_axis().color(parent()->colororder()[0]);
parent()->y2_axis().color(parent()->colororder()[1]);
}
touch();
return *this;
}
bool line::impulse() const { return impulse_; }
class line &line::impulse(bool impulse) {
impulse_ = impulse;
touch();
return *this;
}
bool line::fill() const { return fill_; }
class line &line::fill(bool fill) {
fill_ = fill;
touch();
return *this;
}
bool line::use_y_2() const { return use_y2_; }
class line &line::use_y_2(bool use_y_2) {
use_y2_ = use_y_2;
touch();
return *this;
}
bool line::polar() const { return polar_; }
class line &line::polar(bool polar) {
polar_ = polar;
touch();
return *this;
}
void line::run_draw_commands() {
// ask axes to draw the line
maybe_update_line_spec();
parent_->draw_path(x_data_,y_data_,line_spec_.color());
}
} // namespace matplot
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