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//
// Created by Alan Freitas on 11/07/20.
//
#include <cmath>
#include <sstream>
#include <algorithm>
#include <matplot/util/common.h>
#include <matplot/core/axes.h>
#include <matplot/axes_objects/bars.h>
namespace matplot {
bars::bars(class axes* parent)
: axes_object(parent)
{}
bars::bars(class axes* parent, const std::vector<double>& y)
: bars(parent, std::vector<std::vector<double>>({y})) {}
bars::bars(class axes* parent, const std::vector<std::vector<double>>& Y)
: axes_object(parent), ys_(Y) {
if (parent_->children().empty()) {
parent_->x_axis().limits({0, double(ys_[0].size()+1)});
if (ys_[0].size() <= 15) {
parent_->x_axis().tick_values(iota(1,ys_[0].size()));
}
}
if (parent_->y_axis().limits_mode_auto()) {
double min_min = ys_[0][0];
for (size_t i = 0; i < ys_.size(); ++i) {
min_min = std::min(min_min, *std::min_element(ys_[i].begin(), ys_[i].end()));
}
if (min_min > 0) {
parent_->y_axis().limits({ymin(), inf});
}
}
parent_->x_axis().zero_axis(true);
}
bars::bars(class axes* parent, const std::vector<double>& x, const std::vector<double>& y)
: bars(parent, x, std::vector<std::vector<double>>({y})) {}
bars::bars(class axes* parent, const std::vector<double>& x, const std::vector<std::vector<double>>& Y)
: axes_object(parent), x_(x), ys_(Y) {
if (parent_->children().empty()) {
double min_x_diff = x_[1] - x_[0];
for (size_t i = 1; i < x_.size() - 1; ++i) {
double x_diff = x_[i+1] - x_[i];
if (x_diff < min_x_diff) {
min_x_diff = x_diff;
}
}
parent_->x_axis().limits({x.front() - min_x_diff, x.back() + min_x_diff});
if (ys_[0].size() <= 15) {
parent_->x_axis().tick_values(x);
}
}
if (parent_->y_axis().limits_mode_auto()) {
double min_min = ys_[0][0];
for (size_t i = 0; i < ys_.size(); ++i) {
min_min = std::min(min_min, *std::min_element(ys_[i].begin(), ys_[i].end()));
}
if (min_min > 0) {
parent_->y_axis().limits({ymin(), inf});
}
}
parent_->x_axis().zero_axis(true);
}
std::string bars::plot_string() {
maybe_update_face_colors();
std::string res;
for (size_t i = 0; i < ys_.size(); ++i) {
res += " '-' with boxes linewidth " + num2str(line_width_) + " fillstyle solid border rgb '" + to_string(edge_color_) + "'";
res += " fillcolor '" + to_string(face_colors_[i]) + "'";
if (i != ys_.size() - 1) {
res += ", ";
}
}
return res;
}
std::string bars::legend_string(const std::string& title) {
std::string res;
for (size_t i = 0; i < ys_.size(); ++i) {
res += " keyentry with boxes fillstyle solid border rgb '" + to_string(edge_color_) + "' fillcolor '" + to_string(face_colors_[i]) + "' title \"" + escape(title) + "\"";
if (i != ys_.size() - 1) {
res += ", ";
}
}
return res;
}
double bars::x_minimum_difference() {
double min_x_diff = 1.;
if (x_.size() > 1) {
min_x_diff = x_[1] - x_[0];
for (size_t i = 1; i < x_.size() - 1; ++i) {
double x_diff = x_[i+1] - x_[i];
if (x_diff < min_x_diff) {
min_x_diff = x_diff;
}
}
}
return min_x_diff;
}
double bars::cluster_width() {
// actual width of the cluster (clusters don't take all their space)
return range_for_cluster() * (ys_.size() == 1 ? 1.0 : cluster_width_);
}
double bars::range_for_cluster() {
double min_x_diff = x_minimum_difference();
const size_t n_bar_groups = ys_.size();
// space taken by the cluster in the x axis
return bar_width_ / n_bar_groups;
}
double bars::x_end_point(size_t cluster_index, size_t i) {
// get the x_value (automatic or manual)
double x_value = x_.size() > i ? x_[i] : i + 1;
// go to point where bar width starts
x_value -= bar_width_ / 2;
// advance according to the group index
x_value += range_for_cluster() * cluster_index;
// center
x_value += range_for_cluster() / 2;
return x_value;
}
std::string bars::data_string() {
std::stringstream ss;
double m = x_minimum_difference();
double cw = cluster_width();
for (size_t bar_group = 0; bar_group < ys_.size(); ++bar_group) {
for (size_t i = 0; i < ys_[bar_group].size(); ++i) {
// <box center> <box height> <box width>
ss << " " << x_end_point(bar_group, i) << " " << ys_[bar_group][i] << " " << m * cw << "\n";
}
ss << "e\n";
}
return ss.str();
}
bool bars::requires_colormap() {
return false;
}
double bars::xmax() {
if (!x_.empty()) {
return *std::max_element(x_.begin(), x_.end());
} else {
return ys_[0].size() + 1;
}
}
double bars::xmin() {
if (!x_.empty()) {
return *std::min_element(x_.begin(), x_.end());
} else {
return ys_[0].size() + 1;
}
}
double bars::ymax() {
double max_max = ys_[0][0];
for (size_t i = 0; i < ys_.size(); ++i) {
max_max = std::max(max_max, *std::max_element(ys_[i].begin(), ys_[i].end()));
}
return max_max;
}
double bars::ymin() {
double min_min = ys_[0][0];
for (size_t i = 0; i < ys_.size(); ++i) {
min_min = std::min(min_min, *std::min_element(ys_[i].begin(), ys_[i].end()));
}
return std::min(min_min, 0.);
}
enum axes_object::axes_category bars::axes_category() {
return axes_object::axes_category::two_dimensional;
}
void bars::maybe_update_face_colors() {
if (!manual_face_color_) {
face_colors_.clear();
for (size_t i = 0; i < ys_.size(); ++i) {
face_colors_.emplace_back(parent_->get_color_and_bump());
}
manual_face_color_ = true;
}
}
const color_array &bars::face_color() const {
return face_colors_[0];
}
class bars& bars::face_color(const color_array &face_color) {
face_colors_[0] = face_color;
manual_face_color_ = true;
touch();
return *this;
}
class bars& bars::face_color(const std::array<float,3> &face_color) {
color_array c = {0, face_color[0], face_color[1], face_color[2]};
face_colors_[0] = c;
manual_face_color_ = true;
touch();
return *this;
}
class bars& bars::face_color(std::initializer_list<float> color) {
if (color.size() == 3) {
face_color(to_array<3>(color));
} else {
face_color(to_array<4>(color));
}
return *this;
}
class bars& bars::face_color(const std::string &color) {
face_color(to_array(color));
return *this;
}
bool bars::manual_face_color() const {
return manual_face_color_;
}
class bars& bars::manual_face_color(bool manual_face_color) {
manual_face_color_ = manual_face_color;
touch();
return *this;
}
const color_array &bars::edge_color() const {
return edge_color_;
}
class bars& bars::edge_color(const color_array &edge_color) {
edge_color_ = edge_color;
touch();
return *this;
}
class bars& bars::edge_color(const std::array<float,3> &edge_color) {
color_array c = {0,edge_color[0], edge_color[1], edge_color[2]};
edge_color_ = c;
touch();
return *this;
}
class bars& bars::edge_color(std::initializer_list<float> color) {
if (color.size() == 3) {
edge_color(to_array<3>(color));
} else {
edge_color(to_array<4>(color));
}
return *this;
}
class bars& bars::edge_color(const std::string &color) {
edge_color(to_array(color));
return *this;
}
const line_spec &bars::edge_style() const {
return edge_style_;
}
class bars& bars::edge_style(const line_spec &edge_style) {
edge_style_ = edge_style;
touch();
return *this;
}
float bars::line_width() const {
return line_width_;
}
class bars& bars::line_width(float line_width) {
line_width_ = line_width;
touch();
return *this;
}
bool bars::vertical_orientation() const {
return vertical_orientation_;
}
class bars& bars::vertical_orientation(bool vertical_orientation) {
vertical_orientation_ = vertical_orientation;
if (!vertical_orientation_) {
std::cerr << "Cannot set horizontal orientation in gnuplot yet" << std::endl;
vertical_orientation_ = true;
}
return *this;
}
bool bars::visible() const {
return visible_;
}
class bars& bars::visible(bool visible) {
visible_ = visible;
touch();
return *this;
}
float bars::bar_width() const {
return bar_width_;
}
class bars& bars::bar_width(float bar_width) {
if (bar_width != bar_width_) {
bar_width_ = bar_width;
touch();
}
return *this;
}
const std::vector<color_array> &bars::face_colors() const {
return face_colors_;
}
std::vector<color_array> &bars::face_colors() {
return face_colors_;
}
class bars& bars::face_colors(const std::vector<color_array> &face_colors) {
face_colors_ = face_colors;
touch();
return *this;
}
}