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374 lines (314 loc) 路 9.98 KB
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//
// Created by Alan Freitas on 2020-07-05.
//
#include <cmath>
#include <matplot/core/axes.h>
#include <matplot/core/figure.h>
#include <matplot/core/axis.h>
#include <matplot/util/colors.h>
#include <matplot/util/common.h>
namespace matplot {
axis::axis() : axis(nullptr, inf, inf) {}
axis::axis(class axes* parent) : axis(parent, inf, inf) {}
axis::axis(class axes* parent, bool visible) : axis(parent, inf, inf, visible) {}
axis::axis(class axes* parent, double min, double max) : axis(parent, min, max, true) {}
axis::axis(class axes* parent, double min, double max, bool visible) : parent_(parent), limits_({min,max}), visible_(visible) {}
void axis::touch() {
parent_->touch();
}
const std::array<double, 2> &axis::limits() const {
return limits_;
}
class axis& axis::limits(const std::array<double, 2> &limits) {
limits_ = limits;
limits_mode_manual(true);
touch();
return *this;
}
bool axis::limits_mode_auto() const {
return limits_mode_auto_ || (!std::isfinite(limits_[0]) && !std::isfinite(limits_[0]));
}
bool axis::limits_mode_manual() const {
return !limits_mode_auto_;
}
class axis& axis::limits_mode_auto(bool limits_mode_auto) {
limits_mode_auto_ = limits_mode_auto;
parent_->touch();
return *this;
}
class axis& axis::limits_mode_manual(bool limits_mode_manual) {
limits_mode_auto_ = !limits_mode_manual;
parent_->touch();
return *this;
}
std::string axis::range_string() const {
if (!reverse_) {
std::string r = "[";
if (!limits_mode_auto_ && std::isfinite(limits_[0])) {
r += std::to_string(limits_[0]);
}
r += ":";
if (!limits_mode_auto_ && std::isfinite(limits_[1])) {
r += std::to_string(limits_[1]);
}
r += "] noreverse";
return r;
} else {
std::string r = "[";
if (!limits_mode_auto_ && std::isfinite(limits_[1])) {
r += std::to_string(limits_[1]);
}
r += ":";
if (!limits_mode_auto_ && std::isfinite(limits_[0])) {
r += std::to_string(limits_[0]);
}
r += "] reverse";
return r;
}
}
bool axis::reverse() const {
return reverse_;
}
class axis& axis::reverse(bool reverse) {
reverse_ = reverse;
parent_->touch();
return *this;
}
const color_array &axis::color() const {
return color_;
}
class axis& axis::color(const color_array &color) {
color_ = color;
touch();
return *this;
}
class axis& axis::color(const std::string& c){
color(string_to_color(c));
return *this;
}
class axis& axis::color(const enum color& c){
return color(to_array(c));
}
const std::string &axis::label() const {
return label_;
}
class axis& axis::label(const std::string &label) {
label_ = label;
touch();
return *this;
}
std::string axis::label_string() const {
std::string cmd =" \"";
if (label_weight_ == "bold") {
cmd += "{/:Bold ";
}
if (label_weight_ == "italic") {
cmd += "{/:Italic ";
}
cmd += escape(label());
if (label_weight_ == "bold") {
cmd += "}";
}
if (label_weight_ == "italic") {
cmd += "}";
}
cmd += "\"";
if (parent_->parent()->backend()->supports_fonts()) {
cmd += " font \"" + escape(parent_->font()) + "," + num2str(unsigned(label_font_size_)) + "\"";
cmd += " textcolor \"" + to_string(label_color_) + "\"";
}
return cmd;
}
const std::string &axis::tick_label_format() const {
return tick_label_format_;
}
class axis& axis::tick_label_format(const std::string &tick_label_format) {
if (tick_label_format == "usd") {
tick_label_format_ = "$%.2f";
} else if (tick_label_format == "degrees") {
tick_label_format_ = "%g掳";
} else if (tick_label_format == "percentage") {
tick_label_format_ = "%g%%";
} else if (tick_label_format == "auto") {
tick_label_format_ = "%g";
} else {
tick_label_format_ = tick_label_format;
}
touch();
return *this;
}
bool axis::tick_values_automatic() const {
return tick_values_automatic_;
}
class axis& axis::tick_values_automatic(bool tick_values_automatic) {
tick_values_automatic_ = tick_values_automatic;
touch();
return *this;
}
bool axis::tick_values_manual() const {
return !tick_values_automatic_;
}
class axis& axis::tick_values_manual(bool tick_values_manual) {
tick_values_automatic_ = !tick_values_manual;
touch();
return *this;
}
const std::vector<double> &axis::tick_values() const {
return tick_values_;
}
class axis& axis::tick_values(const std::vector<double> &tick_values) {
tick_values_ = tick_values;
tick_values_automatic_ = false;
touch();
return *this;
}
const std::vector<std::string> &axis::ticklabels() const {
return ticklabels_;
}
class axis& axis::ticklabels(const std::vector<std::string> &ticklabels) {
ticklabels_ = ticklabels;
if (ticklabels.empty()) {
tick_values({});
}
touch();
return *this;
}
bool axis::ticklabels_mode() const {
return ticklabels_mode_;
}
class axis& axis::ticklabels_mode(bool ticklabels_mode) {
ticklabels_mode_ = ticklabels_mode;
touch();
return *this;
}
std::string axis::tick_values_string(bool minor_ticks) const {
std::string r = " (";
// Future work: use calcticks inside tick_values and
// ticklabels whenever we call this function
// regardless of whether the ticks are automatic.
// This requires keeping preprocessed data in this object.
// std::vector<double> values = tick_values();
// std::vector<std::string> labels = ticklabels();
// And proceed with these labels.
// We can then always use manual labels in the gnuplot
// backend, which would make axes more consistent
// with our format labels and avoid approximation
// errors in polar plots. It would also be useful
// for a future opengl backend, where we always
// need explicit labels.
for (size_t i = 0; i < tick_values_.size(); ++i) {
if (i != 0) {
r += ", ";
}
if (ticklabels_mode() && ticklabels().size() > i) {
r += "\"" + escape(ticklabels_[i]) + "\" ";
} else {
// Unfortunately, gnuplot cancels the formatting
// when we set the tic values explicitly.
// So if there is no explicit label but there is
// a format we want to apply, we also need to explicitly
// create a label according to our format.
r += "\"" + escape(num2str(tick_values_[i], tick_label_format_)) + "\" ";
}
r += num2str(tick_values_[i]);
if (minor_ticks) {
r += " 0";
if (i != tick_values_.size() - 1) {
double m_tick = (tick_values_[i] + tick_values_[i+1])/2.;
r += ", " + num2str(m_tick) + " 1";
}
}
}
r += ")";
return r;
}
std::string axis::tick_rotate_string() const {
if (tickangle_ == 0) {
return " norotate";
} else {
return " rotate by " + num2str(tickangle_) + " right";
}
}
axis::axis_scale axis::scale() const {
return scale_;
}
class axis& axis::scale(axis::axis_scale scale) {
if (scale != scale_) {
scale_ = scale;
touch();
}
return *this;
}
bool axis::visible() const {
return visible_;
}
class axis& axis::visible(bool visible) {
visible_ = visible;
touch();
return *this;
}
float axis::tick_length() const {
return tick_length_;
}
class axis& axis::tick_length(float tick_length) {
tick_length_ = tick_length;
touch();
return *this;
}
bool axis::zero_axis() const {
return zero_axis_;
}
class axis& axis::zero_axis(bool zero_axis) {
zero_axis_ = zero_axis;
touch();
return *this;
}
bool axis::geographic() const {
return geographic_;
}
class axis& axis::geographic(bool geographic) {
geographic_ = geographic;
touch();
return *this;
}
bool axis::on_axis() const {
return on_axis_;
}
class axis& axis::on_axis(bool on_axis) {
on_axis_ = on_axis;
touch();
return *this;
}
const std::string &axis::label_weight() const {
return label_weight_;
}
class axis& axis::label_weight(const std::string &label_weight) {
label_weight_ = label_weight;
touch();
return *this;
}
float axis::label_font_size() const {
return label_font_size_;
}
class axis& axis::label_font_size(float label_font_size) {
label_font_size_ = label_font_size;
touch();
return *this;
}
const color_array &axis::label_color() const {
return label_color_;
}
class axis& axis::label_color(const color_array &label_color) {
label_color_ = label_color;
touch();
return *this;
}
float axis::tickangle() const {
return tickangle_;
}
class axis& axis::tickangle(float tickangle) {
tickangle_ = tickangle;
touch();
return *this;
}
}