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geant4/source/externals/g4tools/include/tools/sg/axis
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Gabriele Cosmo b4a16de652 Import Geant4 11.4.0 source tree
2025-12-05 08:54:02 +01:00

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// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.
#ifndef tools_sg_axis
#define tools_sg_axis
#include "node"
#include "line_style"
#include "text_style"
#include "enums"
#include "noderef"
#include "vertices"
#include "draw_style"
#include "rgba"
#include "normal"
#include "separator"
#include "tools"
#include "nodekit"
#include "../lina/vec3f"
#include "../mnmx"
#include "../hplot"
#include <cstdio> //sprintf
#include <cstring> //strcpy
namespace tools {
namespace sg {
class axis : public node {
public:
TOOLS_NODE(axis,tools::sg::axis,node)
public:
sf<float> width;
sf<float> minimum_value;
sf<float> maximum_value;
sf<unsigned int> divisions;
sf_string modeling; //hippo, hplot
sf<bool> is_log;
// If modeling is hippo or hplot,
// labels_enforced true let labels be an input field.
sf<bool> labels_enforced;
sf<bool> tick_up;
sf<float> tick_length;
// NOTE : if modeling is none,the below are input fields.
// If modeling is hippo or hplot, the below are output field
// (filled by compute_ticks).
sf<unsigned int> tick_number; //output
mf_string labels; //output
mf<float> values; //output //in [minimumValue,maximumValue]
mf<float> coords; //output //in [0,width]
mf<float> sub_coords; //output
sf<int> magnitude; //output
sf_string title;
sf<float> title_to_axis;
sf<float> title_height;
sf_enum<hjust> title_hjust;
sf<float> label_to_axis;
sf<float> label_height;
sf<bool> labels_no_overlap_automated;
sf<float> labels_gap; //in percent of width.
// time labels only in hplot modeling for the moment.
sf<bool> time_labels;
sf_string time_format;
sf<double> time_offset;
sf<bool> time_offset_is_GMT;
public:
virtual const desc_fields& node_desc_fields() const {
TOOLS_FIELD_DESC_NODE_CLASS(tools::sg::axis)
static const desc_fields s_v(parent::node_desc_fields(),27, //WARNING : take care of count.
TOOLS_ARG_FIELD_DESC(width),
TOOLS_ARG_FIELD_DESC(minimum_value),
TOOLS_ARG_FIELD_DESC(maximum_value),
TOOLS_ARG_FIELD_DESC(divisions),
TOOLS_ARG_FIELD_DESC(modeling),
TOOLS_ARG_FIELD_DESC(is_log),
TOOLS_ARG_FIELD_DESC(labels_enforced),
TOOLS_ARG_FIELD_DESC(tick_up),
TOOLS_ARG_FIELD_DESC(tick_length),
TOOLS_ARG_FIELD_DESC(tick_number),
TOOLS_ARG_FIELD_DESC(labels),
TOOLS_ARG_FIELD_DESC(values),
TOOLS_ARG_FIELD_DESC(coords),
TOOLS_ARG_FIELD_DESC(sub_coords),
TOOLS_ARG_FIELD_DESC(magnitude),
TOOLS_ARG_FIELD_DESC(title),
TOOLS_ARG_FIELD_DESC(title_to_axis),
TOOLS_ARG_FIELD_DESC(title_height),
TOOLS_ARG_FIELD_DESC(title_hjust),
TOOLS_ARG_FIELD_DESC(label_to_axis),
TOOLS_ARG_FIELD_DESC(label_height),
TOOLS_ARG_FIELD_DESC(labels_no_overlap_automated),
TOOLS_ARG_FIELD_DESC(labels_gap),
TOOLS_ARG_FIELD_DESC(time_labels),
TOOLS_ARG_FIELD_DESC(time_format),
TOOLS_ARG_FIELD_DESC(time_offset),
TOOLS_ARG_FIELD_DESC(time_offset_is_GMT)
);
return s_v;
}
virtual bool touched() {
if(parent::touched()) return true;
if(line_style().touched()) return true;
if(ticks_style().touched()) return true;
if(labels_style().touched()) return true;
if(mag_style().touched()) return true;
if(title_style().touched()) return true;
return false;
}
virtual void reset_touched() {
parent::reset_touched();
line_style().reset_touched();
ticks_style().reset_touched();
labels_style().reset_touched();
mag_style().reset_touched();
title_style().reset_touched();
}
private:
void add_fields(){
// if adding a field, look for reset_style() and set_from_style()
add_field(&width);
add_field(&minimum_value);
add_field(&maximum_value);
add_field(&divisions);
add_field(&modeling);
add_field(&is_log);
add_field(&labels_enforced);
add_field(&tick_up);
add_field(&tick_length);
add_field(&tick_number);
add_field(&labels);
add_field(&values);
add_field(&coords);
add_field(&sub_coords);
add_field(&magnitude);
add_field(&title);
add_field(&title_to_axis);
add_field(&title_height);
add_field(&title_hjust);
add_field(&label_to_axis);
add_field(&label_height);
add_field(&labels_no_overlap_automated);
add_field(&labels_gap);
add_field(&time_labels);
add_field(&time_format);
add_field(&time_offset);
add_field(&time_offset_is_GMT);
}
void init_sg(){
m_group.add(new noderef(m_line_sep));
m_group.add(new noderef(m_ticks_sep));
m_group.add(new noderef(m_labels_sep));
m_group.add(new noderef(m_mag_sep));
m_group.add(new noderef(m_title_sep));
}
public:
virtual void render(render_action& a_action) {
if(touched()) {
update_sg(a_action.out());
reset_touched();
}
m_group.render(a_action);
}
virtual void pick(pick_action& a_action) {
if(touched()) {
update_sg(a_action.out());
reset_touched();
}
//m_group.pick(a_action);
nodekit_pick(a_action,m_group,this);
}
virtual void search(search_action& a_action) {
if(touched()) {
update_sg(a_action.out());
reset_touched();
}
parent::search(a_action);
if(a_action.done()) return;
m_group.search(a_action);
}
virtual void bbox(bbox_action& a_action) {
if(touched()) {
update_sg(a_action.out());
reset_touched();
}
m_group.bbox(a_action);
}
virtual bool write(write_action& a_action) {
//FIXME : this method should not be needed !
// But m_[line,ticks,labels,mag,title]_style not written !
if(touched()) {
update_sg(a_action.out());
reset_touched();
}
//if(!write_fields(a_action)) return false;
return m_group.write(a_action);
}
public:
axis(const base_freetype& a_ttf)
:parent()
,width(1)
,minimum_value(0)
,maximum_value(1)
,divisions(510)
,modeling(tick_modeling_hippo())
,is_log(false)
,labels_enforced(false)
,tick_up(true)
,tick_length(0)
,tick_number(0)
,magnitude(0)
,title("")
,title_to_axis(0) //inited below
,title_height(0) //inited below
,title_hjust(right)
,label_to_axis(0) //inited below
,label_height(0) //inited below
,labels_no_overlap_automated(true)
,labels_gap(0.02f)
,time_labels(false)
,time_format("%H:%M:%S")
,time_offset(0) //UTC_time_1970_01_01__00_00_00
,time_offset_is_GMT(false)
,m_ttf(a_ttf)
{
add_fields();
init_sg();
reset_style(true);
}
virtual ~axis(){}
public:
axis(const axis& a_from)
:parent(a_from)
,width(a_from.width)
,minimum_value(a_from.minimum_value)
,maximum_value(a_from.maximum_value)
,divisions(a_from.divisions)
,modeling(a_from.modeling)
,is_log(a_from.is_log)
,labels_enforced(a_from.labels_enforced)
,tick_up(a_from.tick_up)
,tick_length(a_from.tick_length)
,tick_number(a_from.tick_number)
,magnitude(a_from.magnitude)
,title(a_from.title)
,title_to_axis(a_from.title_to_axis)
,title_height(a_from.title_height)
,title_hjust(a_from.title_hjust)
,label_to_axis(a_from.label_to_axis)
,label_height(a_from.label_height)
,labels_no_overlap_automated(a_from.labels_no_overlap_automated)
,labels_gap(a_from.labels_gap)
,time_labels(a_from.time_labels)
,time_format(a_from.time_format)
,time_offset(a_from.time_offset)
,time_offset_is_GMT(a_from.time_offset_is_GMT)
,m_ttf(a_from.m_ttf)
,m_line_style(a_from.m_line_style)
,m_ticks_style(a_from.m_ticks_style)
,m_labels_style(a_from.m_labels_style)
,m_mag_style(a_from.m_mag_style)
,m_title_style(a_from.m_title_style)
{
add_fields();
init_sg();
}
axis& operator=(const axis& a_from){
parent::operator=(a_from);
width = a_from.width;
minimum_value = a_from.minimum_value;
maximum_value = a_from.maximum_value;
divisions = a_from.divisions;
modeling = a_from.modeling;
is_log = a_from.is_log;
labels_enforced = a_from.labels_enforced;
tick_up = a_from.tick_up;
tick_length = a_from.tick_length;
tick_number = a_from.tick_number;
magnitude = a_from.magnitude;
title = a_from.title;
title_to_axis = a_from.title_to_axis;
title_height = a_from.title_height;
title_hjust = a_from.title_hjust;
label_to_axis = a_from.label_to_axis;
label_height = a_from.label_height;
labels_no_overlap_automated = a_from.labels_no_overlap_automated;
labels_gap = a_from.labels_gap;
time_labels = a_from.time_labels;
time_format = a_from.time_format;
time_offset = a_from.time_offset;
time_offset_is_GMT = a_from.time_offset_is_GMT;
m_line_style = a_from.m_line_style;
m_ticks_style = a_from.m_ticks_style;
m_labels_style = a_from.m_labels_style;
m_mag_style = a_from.m_mag_style;
m_title_style = a_from.m_title_style;
return *this;
}
public:
sg::line_style& line_style() {return m_line_style;}
sg::line_style& ticks_style() {return m_ticks_style;}
text_style& labels_style() {return m_labels_style;}
text_style& title_style() {return m_title_style;}
text_style& mag_style() {return m_mag_style;}
void set_color(const colorf& a_color){
m_line_style.color = a_color;
m_ticks_style.color = a_color;
m_labels_style.color = a_color;
m_title_style.color = a_color;
m_mag_style.color = a_color;
}
public:
void update_sg(std::ostream& a_out) {
if(width<=0) {
m_line_sep.clear();
m_ticks_sep.clear();
m_labels_sep.clear();
m_mag_sep.clear();
m_title_sep.clear();
return;
}
// line scene graph :
m_line_sep.clear();
if(m_line_style.visible) {
rgba* mat = new rgba();
mat->color = m_line_style.color;
m_line_sep.add(mat);
draw_style* ds = new draw_style;
ds->style = draw_lines;
ds->line_pattern = m_line_style.pattern;
ds->line_width = m_line_style.width;
m_line_sep.add(ds);
vertices* vtxs = new vertices;
vtxs->mode = gl::line_strip();
vtxs->add(0,0,0);
vtxs->add(width,0,0);
m_line_sep.add(vtxs);
}
// ticks scene graph :
if(modeling==tick_modeling_none()) {
} else if(modeling==tick_modeling_hplot()) {
compute_ticks_HPLOT(a_out);
} else {
compute_ticks_hippo();
}
m_ticks_sep.clear();
if(m_ticks_style.visible) {
vertices* vtxs = new vertices;
vtxs->mode = gl::lines();
if(modeling==tick_modeling_hplot()) {
size_t num = m_sub_ticks.size()/4;
size_t pos = 0;
for(size_t index=0;index<num;index++) {
float bx = m_sub_ticks[pos];pos++;
float by = m_sub_ticks[pos];pos++;
float ex = m_sub_ticks[pos];pos++;
float ey = m_sub_ticks[pos];pos++;
if(tick_up) {
vtxs->add(bx,by,0);
vtxs->add(ex,ey,0);
} else {
vtxs->add(bx,-by,0);
vtxs->add(ex,-ey,0);
}
}
} else {
float yy = tick_up ? tick_length.value():-tick_length.value();
for(unsigned int index=0;index<tick_number;index++) {
float xx = coords.values()[index];
vtxs->add(xx,0,0);
vtxs->add(xx,yy,0);
}
}
if(vtxs->number()) {
rgba* mat = new rgba();
mat->color = m_ticks_style.color;
m_ticks_sep.add(mat);
draw_style* ds = new draw_style;
ds->style = draw_lines;
ds->line_pattern = m_ticks_style.pattern;
ds->line_width = m_ticks_style.width;
m_ticks_sep.add(ds);
m_ticks_sep.add(vtxs);
} else {
delete vtxs;
}
}
// labels scene graph :
m_labels_sep.clear();
if(m_labels_style.visible && tick_number ) {
m_labels_seps.clear();
m_labels_xs.clear();
m_labels_mtxs.clear();
rgba* mat = new rgba();
mat->color = m_labels_style.color;
m_labels_sep.add(mat);
float text_size = label_height*m_labels_style.scale;
std::string font = m_labels_style.font.value();
if(font==font_hershey()) {
draw_style* ds = new draw_style;
ds->style = draw_lines;
ds->line_pattern = m_labels_style.line_pattern;
ds->line_width = m_labels_style.line_width;
m_labels_sep.add(ds);
} else {
m_labels_sep.add(new normal);
}
vec3f X = m_labels_style.x_orientation.value();
vec3f Y = m_labels_style.y_orientation.value();
X.normalize();
Y.normalize();
vec3f Z;X.cross(Y,Z);
Z.cross(X,Y);
mat4f scale_rot(X.v0(),Y.v0(),Z.v0(),0, //first row
X.v1(),Y.v1(),Z.v1(),0,
X.v2(),Y.v2(),Z.v2(),0,
0,0,0,1);
scale_rot.mul_scale(text_size,text_size,1);
bool bin_center = (m_labels_style.options.value()=="center"?true:false); //gopaw.
vec3f vec;float xx;
{unsigned int number = tick_number;
for(unsigned int index=0;index<number;index++) {
if(bin_center) { //label at the center of the bin :
if(index==(number-1)) continue;
xx = 0.5f*(coords.values()[index]+coords.values()[index+1]);
} else { // label on tick :
xx = coords.values()[index];
}
vec.set_value(xx,-label_to_axis,0);
vec += m_labels_style.translation.value();
separator* sep = new separator;
m_labels_sep.add(sep);
matrix* _tsf =
add_string_opt(*sep,
font,
m_labels_style.font_modeling.value(),
m_labels_style.encoding.value(),
m_labels_style.smoothing,
labels.values()[index],
vec[0],vec[1],vec[2],
scale_rot,
m_labels_style.hjust,
m_labels_style.vjust,
m_ttf);
if(_tsf) {
m_labels_seps.push_back(sep);
m_labels_xs.push_back(xx);
m_labels_mtxs.push_back(_tsf);
}
}}
if(labels_no_overlap_automated.value()) avoid_labels_overlap(a_out);
m_labels_seps.clear();
m_labels_xs.clear();
m_labels_mtxs.clear();
}
m_mag_sep.clear();
if( magnitude.value() && m_mag_style.visible) {
rgba* mat = new rgba();
mat->color = m_mag_style.color;
m_mag_sep.add(mat);
char string[64];
if(magnitude>=0)
snpf(string,sizeof(string),"x10+%d",magnitude.value());
else
snpf(string,sizeof(string),"x10-%d",::abs(magnitude));
vec3f vec(width*1.03f,0,0);
vec += m_mag_style.translation.value();
float text_size = label_height*0.8f * m_mag_style.scale;
std::string font = m_mag_style.font.value();
if(font==font_hershey()) {
draw_style* ds = new draw_style;
ds->style = draw_lines;
ds->line_pattern = m_mag_style.line_pattern;
ds->line_width = m_mag_style.line_width;
m_mag_sep.add(ds);
}
add_string(m_mag_sep,
font,
m_mag_style.font_modeling.value(),
m_mag_style.encoding.value(),
m_mag_style.smoothing,
string,
vec[0],vec[1],vec[2],
m_mag_style.x_orientation.value(),
m_mag_style.y_orientation.value(),
text_size,
m_mag_style.hjust,
m_mag_style.vjust,
m_ttf);
}
// title scene graph :if(update_title) {
m_title_sep.clear();
if(title.value().size() && m_title_style.visible) {
rgba* mat = new rgba();
mat->color = m_title_style.color;
m_title_sep.add(mat);
float text_size = title_height*m_title_style.scale;
std::string font = m_title_style.font.value();
if(font==font_hershey()) {
draw_style* ds = new draw_style;
ds->style = draw_lines;
ds->line_pattern = m_title_style.line_pattern;
ds->line_width = m_title_style.line_width;
m_title_sep.add(ds);
} else {
m_title_sep.add(new normal);
}
float xx = 0; //left
if(title_hjust==center) {
xx = width/2;
} else if(title_hjust==right) {
xx = width;
}
vec3f vec(xx,-title_to_axis,0);
vec += m_title_style.translation.value();
add_string(m_title_sep,
font,
m_title_style.font_modeling.value(),
m_title_style.encoding.value(),
m_title_style.smoothing,
title.value(),
vec[0],vec[1],vec[2],
m_title_style.x_orientation.value(),
m_title_style.y_orientation.value(),
text_size,
m_title_style.hjust,
m_title_style.vjust,
m_ttf);
}
}
public: //style
void reset_style(bool a_geom = false) {
//reset fields that are considered as part of the style.
////////////////////////////////////////////
// we do not touch :
////////////////////////////////////////////
//width
//minimum_value
//maximum_value
//labels_enforced
//tick_number
//magnitude
//time_labels
//time_format
//time_offset
//time_offset_is_GMT
//labels
//values
//coords
//sub_coords
////////////////////////////////////////////
divisions = 510;
modeling = tick_modeling_hippo();
tick_up = true;
is_log = false;
title.value().clear();
labels_no_overlap_automated = true;
labels_gap = 0.02f;
if(a_geom) {
////////////////////////////////////////////
// Take PAW default :
float YSIZ = 20; //page height
float YMGL = 2; //low y margin (to data frame).
float YMGU = 2; //up y margin (to data frame).
float VSIZ = 0.28F; //tick label character size.
float YVAL = 0.4F; //y distance of x tick label to data frame.
float XTIC = 0.3F; //y length of X axis ticks.
float YLAB = 0.8F; //y distance of x title to data frame.
float ASIZ = 0.28F; // axis title (label) character size.
float hData = YSIZ-YMGL-YMGU;
// To map data space to width :
float to1 = width/hData;
float vsiz = VSIZ * to1; //0.0175F
float yval = YVAL * to1; //0.025F
float xtic = XTIC * to1; //0.01875F
float ylab = YLAB * to1; //0.05F
float asiz = ASIZ * to1; //0.0175F
//sf
tick_length = xtic;
label_to_axis = yval;
label_height = vsiz;
// The axis title is the PAW axis label.
// It is right justified at the end of axis
// (at end right for XY_X, at end top for XY_Y)
title_to_axis = ylab;
title_height = asiz;
}
title_hjust = right;
////////////////////////////////////////////
// setup styles :
m_line_style = line_style();
m_ticks_style = line_style();
m_labels_style = text_style();
m_mag_style = text_style();
m_title_style = text_style();
m_line_style.color = colorf_black();
m_ticks_style.color = colorf_black();
m_labels_style.color = colorf_black();
m_labels_style.font = font_hershey();
m_labels_style.encoding = encoding_PAW();
m_mag_style.color = colorf_black();
m_mag_style.font = font_hershey();
m_mag_style.encoding = encoding_PAW();
m_title_style.color = colorf_black();
m_title_style.font = font_hershey();
m_title_style.encoding = encoding_PAW();
}
typedef std::pair<std::string,std::string> style_item_t;
typedef std::vector<style_item_t> style_t;
bool set_from_style(std::ostream& a_out,const style_t& a_style) {
style_t::const_iterator it;
for(it=a_style.begin();it!=a_style.end();++it) {
const std::string& key = (*it).first;
const std::string& sv = (*it).second;
// not part of style :
//width
//minimum_value
//maximum_value
//labels_enforced
//tick_number
//magnitude
//title
//time_labels
//time_format
//time_offset
//time_offset_is_GMT
//labels
//values
//coords
//sub_coords
if(key=="divisions") {
unsigned int v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
divisions = v;
} else if(key=="modeling") {
modeling = sv;
} else if(key=="is_log") {
bool v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
is_log = v;
} else if(key=="tick_up") {
bool v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
tick_up = v;
} else if(key=="tick_length") {
float v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
tick_length = v;
} else if(key=="title") {
title = sv;
} else if(key=="title_to_axis") {
float v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
title_to_axis = v;
} else if(key=="title_height") {
float v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
title_height = v;
} else if(key=="title_hjust") {
hjust v;
if(!shjust(sv,v))
{style_failed(a_out,key,sv);return false;}
title_hjust = v;
} else if(key=="label_to_axis") {
float v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
label_to_axis = v;
} else if(key=="label_height") {
float v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
label_height = v;
} else if(key=="labels_no_overlap_automated") {
bool v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
labels_no_overlap_automated = v;
} else if(key=="labels_gap") {
float v;
if(!to(sv,v)) {style_failed(a_out,key,sv);return false;}
labels_gap = v;
} else {
a_out << "axis::set_from_style :"
<< " unknown key " << key << "."
<< std::endl;
}
}
return true;
}
void set_encoding(const std::string& a_value) {
labels_style().encoding = a_value;
mag_style().encoding = a_value;
title_style().encoding = a_value;
}
protected:
float get_overlap(std::ostream& a_out,bool& a_overlap) {
a_overlap = false;
std::vector<float> x_mins;
std::vector<float> x_maxs;
{size_t index = 0;
bbox_action _action(a_out);
tools_vforcit(separator*,m_labels_seps,it) {
_action.reset();
(*it)->bbox(_action);
if(_action.end()) {
float dx,dy,dz;
if(_action.box().get_size(dx,dy,dz)) {
if(dx>0) {
x_mins.push_back(m_labels_xs[index]-dx*0.5f);
x_maxs.push_back(m_labels_xs[index]+dx*0.5f);
}
}
}
index++;
}}
float dx_overlap = 0;
{size_t number = x_mins.size();
for(size_t index=1;index<number;index++) {
float dx = x_mins[index]-x_maxs[index-1];
if(dx<0) {
a_overlap = true;
dx_overlap = max_of(dx_overlap,-dx);
}
}}
return dx_overlap;
}
void avoid_labels_overlap(std::ostream& a_out) {
bool overlap;
float first_scale = 1;
float first_overlap = get_overlap(a_out,overlap);
if(overlap) {
float second_scale = 1.1f; // greater than one to be sure to overlap again.
{tools_vforcit(matrix*,m_labels_mtxs,it) {
(*it)->mul_scale(second_scale,second_scale,1);
}}
float second_overlap = get_overlap(a_out,overlap);
if(overlap) {
// first_overlap = a*first_scale+b
// second_overlap = a*second_scale+b
float a = (second_overlap-first_overlap)/(second_scale-first_scale);
float b = first_overlap-a*first_scale;
//float wanted_scale = -b/a; //zero overlap.
float wanted_gap = width.value()*labels_gap.value();
float wanted_scale = (a==0.0f) ? 1 : (-wanted_gap-b)/a; //a==0.0f should not happen.
if(wanted_scale<=0) wanted_scale = 1; // this if() should not happen.
wanted_scale /= second_scale;
{tools_vforcit(matrix*,m_labels_mtxs,it) {
(*it)->mul_scale(wanted_scale,wanted_scale,1);
}}
} else { //it should not happen.
tools_vforcit(matrix*,m_labels_mtxs,it) {
(*it)->mul_scale(1.0f/second_scale,1.0f/second_scale,1);
}
}
}
}
static void style_failed(std::ostream& a_out,
const std::string& a_key,
const std::string& a_value) {
a_out << "axis::set_from_style :"
<< " failed for key " << sout(a_key)
<< " and value " << sout(a_value) << "."
<< std::endl;
}
protected:
//////////////////////////////////////////////////////////////////////////
/// Hippodraw tick modeling //////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
void compute_ticks_hippo() {
// input fields :
// minimum_value
// maximum_value
// is_log
// output fields :
// values
// coords
// sub_coords
// labels (if labels_enforced is false)
// tick_number
float mn = minimum_value;
float mx = maximum_value;
bool a_is_log = is_log;
if(a_is_log) {
if((mn<=0) || (mx<=0) ) a_is_log = false;
}
float magxxx,y,yr,startTick,tickSize;
float pmag;
char pstr[10] = "";
char tmp[10];
unsigned int tick_num = 0;
std::vector<float> tick_values;
std::vector<std::string> tick_labels;
// need include <float.h> which does not exist on some system
//NUM_FUZZ DBL_EPSILON*4
float NUM_FUZZ = 0.01f;
if (mn >= mx) {
if(tick_number) {
tick_number.value(0);
values.clear();
coords.clear();
sub_coords.clear();
labels.clear();
}
if(magnitude.value()) magnitude.value(0);
m_sub_ticks.clear();
return;
}
if (!a_is_log) {
tickSize = calculate_ticks_hippo(mx-mn,magxxx);
startTick = fceil( mn / tickSize) * tickSize;
if (ffabs(magxxx) <= 3)
pmag = 0.0;
else
pmag = startTick != 0.0 ? ffloor(flog10(ffabs(startTick))) : magxxx;
snpf(pstr,sizeof(pstr),"%%1.%df",(int)max_of<float>((pmag-magxxx),0.0));
y = startTick;
while (y <= mx*(1.0+NUM_FUZZ)) {
yr = ffloor(y/fpow(10,magxxx) + 0.5F);
snpf(tmp,sizeof(tmp),pstr,yr*fpow(10,magxxx-pmag));
{float val = yr * fpow(10.0,magxxx);
if((val>=mn)&&(val<=mx)) { //G.Barrand : add this test.
tick_values.push_back(val);
tick_labels.push_back(tmp);
tick_num++;
}}
y += tickSize;
}
if (ffabs(magxxx) <= 3.0) magxxx = 0.0;
} else {
if (mn <= 0) {
if(tick_number) {
tick_number.value(0);
values.clear();
coords.clear();
sub_coords.clear();
labels.clear();
}
if(magnitude.value()) magnitude.value(0);
m_sub_ticks.clear();
return;
}
int nLogTicks;
float logTicks[5];
float magStep;
float maghigh = fceil(flog10(mx));
float maglow = ffloor(flog10(mn));
float magrng = maghigh - maglow;
if (magrng <=3) {
nLogTicks = 3;
logTicks[0] = 1.0;
logTicks[1] = 2.0;
logTicks[2] = 5.0;
magStep = 1.0;
} else {
nLogTicks = 1;
logTicks[0] = 1.0;
magStep = magrng <= 7 ? 1.0F : 2.0F;
}
pmag = (nLogTicks == 3 && (ffabs(maglow)>3 || ffabs(maghigh)>3)) ?
maglow : 0;
magxxx = maglow;
int i = 0;
while ((y=logTicks[i]*fpow(10,magxxx)) < mx*(1+NUM_FUZZ)) {
if (y >= mn) {
// be careful: there is a bug in the NeXT (s)printf
// routine when you do, eg. printf("%1.0g",0.01);
if ((magxxx-pmag) > 4 || (magxxx-pmag) < -3) {
::strcpy(pstr,"%1.0e");
} else {
snpf(pstr,sizeof(pstr),
"%%1.%df",(int)((magxxx-pmag)>0?0.:-(magxxx-pmag)));
}
snpf(tmp,sizeof(tmp),pstr,y*fpow(10.0,-pmag));
{float val = flog10(y);
if((val>=flog10(mn))&&(val<=flog10(mx))) { //G.Barrand : add this if
tick_values.push_back(val);
tick_labels.push_back(tmp);
tick_num++;
}}
}
i++;
if (i>=nLogTicks) {
i = 0;
magxxx += magStep;
}
}
mn = flog10(mn);
mx = flog10(mx);
}
float range = mx - mn;
// it is assumes that tick_values are ordered min to max.
tick_number.value(tick_num);
values.clear();
coords.clear();
for(unsigned int index=0;index<tick_num;index++) {
float val = tick_values[index];
float coord = width * (val-mn)/range;
values.add(val);
coords.add(coord);
}
if(labels_enforced) {
size_t n = labels.size();
if(tick_num>n) {
for(size_t index=n;index<tick_num;index++) labels.add("");
}
} else {
labels = tick_labels;
}
magnitude.value((int)pmag);
sub_coords.clear();
m_sub_ticks.clear();
}
static float calculate_ticks_hippo(float aSize,float& a_mag) {
unsigned int MIN_TICKS = 4;
if (aSize <= 0.0) {
//printf ("CalculateTicks : bad value \n");
aSize = ffabs(aSize);
if (aSize == 0.0) aSize = 1.0;
}
a_mag = ffloor(flog10(aSize));
if (aSize/fpow(10.0,a_mag) < MIN_TICKS) (a_mag)--;
// now fit the max number of ticks into this range
float tickSize;
int tickIndex;
static const float goodTicks[] = {10.0, 5.0, 4.0, 2.0, 1.0};
for(tickIndex = 0;
aSize/(tickSize=goodTicks[tickIndex]*fpow(10.0,a_mag))<MIN_TICKS;
tickIndex++){}
if (tickIndex == 0) a_mag++;
return tickSize;
}
////////////////////////////////////////////////////////////////////////////
/// HPLOT tick modeling ////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////
void compute_ticks_HPLOT(std::ostream& a_out) {
// Controlled by fields :
// minimum_value
// maximum_value
// divisions
// is_log
// Set value on fields :
// values
// coords
// labels (if labels_enforced is false)
// tick_number
float mn = minimum_value;
float mx = maximum_value;
bool a_is_log = is_log;
if(a_is_log) {
if((mn<=0) || (mx<=0) ) a_is_log = false;
}
// Use hplot::axis to get the ticks and subticks positions
// and the labels text.
double xmin = 0;
double ymin = 0;
double xmax = width;
double ymax = 0;
double gridlength = 0;
std::string chopt;
if(a_is_log) chopt += "G";
std::vector<float> linesGrid;
std::vector<hplot::_text> texts;
hplot::axis sbAxisHPLOT(a_out);
chopt += "S";
sbAxisHPLOT.set_tick_size(tick_length/width.value());
if(time_labels.value()) {
chopt += "t";
sbAxisHPLOT.set_time_format(time_format.value());
sbAxisHPLOT.set_time_offset(time_offset,
time_offset_is_GMT);
}
// Get ticks :
{double wmin = mn;
double wmax = mx;
int ndiv = divisions;
sbAxisHPLOT.set_title("");
sbAxisHPLOT.paint(xmin,ymin,xmax,ymax,
wmin,wmax,ndiv, //Modified
chopt,gridlength,false,
m_sub_ticks,linesGrid,texts);}
if(a_is_log) {
mn = flog10(mn);
mx = flog10(mx);
}
float range = mx - mn;
size_t tick_num = texts.size();
// HPLOT stores the magnitude on the last label :
magnitude.value(0);
if(tick_num) {
int pmag;
if(::sscanf(texts[tick_num-1].fString.c_str(),"x10^%d!",&pmag)==1) {
magnitude.value(pmag);
tick_num--;
}
}
tick_number.value(uint32(tick_num));
values.clear();
coords.clear();
for(size_t index=0;index<tick_num;index++) {
float coord = (float)texts[index].fX;
//NOTE : are we sure that val is in [mn,mx]
float val = (coord/width.value()) * range + mn;
coords.add(coord);
values.add(val);
}
if(labels_enforced) {
size_t n = labels.size();
if(tick_num>n) {
for(size_t index=n;index<tick_num;index++) labels.add("");
}
} else {
labels.clear();
for(size_t index=0;index<tick_num;index++) {
labels.add(texts[index].fString);
}
}
{sub_coords.clear();
size_t num = m_sub_ticks.size()/4;
size_t pos = 0;
for(size_t index=0;index<num;index++) {
float coord = m_sub_ticks[pos];
pos += 4;
bool found = false;
for(size_t i=0;i<tick_num;i++) {
if((float)texts[i].fX==coord) {
found = true;
break;
}
}
if(!found) { //not a main tick
sub_coords.add(coord);
}
}}
}
protected:
const base_freetype& m_ttf;
group m_group;
separator m_line_sep;
separator m_ticks_sep;
separator m_labels_sep;
separator m_mag_sep;
separator m_title_sep;
sg::line_style m_line_style;
sg::line_style m_ticks_style;
text_style m_labels_style;
text_style m_mag_style;
text_style m_title_style;
std::vector<float> m_sub_ticks; //n*(2+2)
std::vector<separator*> m_labels_seps;
std::vector<float> m_labels_xs;
std::vector<matrix*> m_labels_mtxs;
};
}}
#endif
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