nk 1.0.0
C++ Numerical Computing Runtime
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figure_render.hpp File Reference
Toolboxes » 2D & 3D Scientific Graphics (graphics)

Engine-side figure renderer — the software path behind saveas/exportgraphics/print (portion 32). More...

#include <nk/figure/figure_manager.hpp>
#include <algorithm>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <map>
#include <string>
#include <vector>

Go to the source code of this file.

Classes

struct  nk::figrender::Rgb
struct  nk::figrender::StyleParts
struct  nk::figrender::TextExtras
struct  nk::figrender::NamedPaletteHex
struct  nk::figrender::Cmd
struct  nk::figrender::AxisRange
struct  nk::figrender::Rect
class  nk::figrender::Raster

Typedefs

using nk::figrender::SvgImageEmbedder

Functions

const std::vector< Rgb > & nk::figrender::palette ()
bool nk::figrender::charSpecColor (char c, Rgb &out)
bool nk::figrender::textColorSpec (const std::string &v, Rgb &out)
TextExtras nk::figrender::parseTextExtras (const std::string &style)
StyleParts nk::figrender::parseStyle (const std::string &s)
const std::uint8_t * nk::figrender::namedPalette (const std::string &name, int &n)
std::vector< Rgb > nk::figrender::parseCustomPalette (const std::string &json)
std::vector< std::uint8_t > nk::figrender::imageCmdRgb (const Cmd &c)
void nk::figrender::parseNestedDoubles (const std::string &j, std::vector< double > &out, size_t &rows, size_t &cols)
std::vector< double > nk::figrender::niceTicks (double mn, double mx, int target=10)
std::vector< double > nk::figrender::logTicks (double mn, double mx)
std::string nk::figrender::tickLabel (double v)
void nk::figrender::dataRange (const std::vector< double > &v, double &lo, double &hi)
std::vector< double > nk::figrender::parseVec (const std::string &json)
std::vector< std::string > nk::figrender::parseTickLabelVec (const std::string &json)
void nk::figrender::addLine (std::vector< Cmd > &out, std::vector< double > xs, std::vector< double > ys, Rgb c, double w, bool dash)
void nk::figrender::addText (std::vector< Cmd > &out, const std::string &s, double x, double y, double size, Rgb c, bool rot90=false, bool bold=false, const std::string &family="")
void nk::figrender::addMarker (std::vector< Cmd > &out, double x, double y, double size, Rgb c, const std::string &kind)
void nk::figrender::addPoly (std::vector< Cmd > &out, std::vector< double > xs, std::vector< double > ys, Rgb c, bool fill)
void nk::figrender::renderAxes (const FigureState &fig, const AxesState &ax, Rect box, std::vector< Cmd > &out)
std::vector< Cmd > nk::figrender::renderFigureDisplay (const FigureState &fig, int W, int H)
std::string nk::figrender::renderFigureSvg (const FigureState &fig, int W, int H, const SvgImageEmbedder &embed={})
const std::uint8_t * nk::figrender::font5x7 (char c)
std::vector< std::uint8_t > nk::figrender::renderFigureRgb (const FigureState &fig, int W, int H)

Variables

const NamedPaletteHex nk::figrender::kNamedPaletteHex []

Detailed Description

Engine-side figure renderer — the software path behind saveas/exportgraphics/print (portion 32).

Produces a pixel-space DISPLAY LIST from a FigureState, plus two backends: • renderFigureSvg — vector SVG (text as <text>) • renderFigureRgb — rasterised RGB buffer (built-in 5×7 bitmap font, Bresenham lines, scanline polygon fill)

Deliberately STL-only and Value-free (same contract as the rest of the figure layer); the bundle's export_reg.cpp turns the RGB buffer into PNG bytes via the image toolbox and writes through the fs.

Scope (portion 32): vector chart types — line, stairs, stem, scatter, bar, barh, area, errorbar — on linear/log axes with grid, limits, tick formats, dir reverse, subplot tiling, legend, sgtitle. NOT yet rendered: 3-D surfaces/contours, imagesc/heatmap (colormap port), polar, text overlays, yyaxis right-scale, annotations — tracked in bugs/opened/graphics/handle-surface-gaps.md sibling export-gaps file.

Definition in file figure_render.hpp.

Typedef Documentation

◆ SvgImageEmbedder

using nk::figrender::SvgImageEmbedder
Initial value:
std::function<std::string(const std::vector<std::uint8_t> &, int, int)>

Definition at line 1845 of file figure_render.hpp.

Function Documentation

◆ addLine()

void nk::figrender::addLine ( std::vector< Cmd > & out,
std::vector< double > xs,
std::vector< double > ys,
Rgb c,
double w,
bool dash )
inline

Definition at line 643 of file figure_render.hpp.

◆ addMarker()

void nk::figrender::addMarker ( std::vector< Cmd > & out,
double x,
double y,
double size,
Rgb c,
const std::string & kind )
inline

Definition at line 675 of file figure_render.hpp.

◆ addPoly()

void nk::figrender::addPoly ( std::vector< Cmd > & out,
std::vector< double > xs,
std::vector< double > ys,
Rgb c,
bool fill )
inline

Definition at line 689 of file figure_render.hpp.

◆ addText()

void nk::figrender::addText ( std::vector< Cmd > & out,
const std::string & s,
double x,
double y,
double size,
Rgb c,
bool rot90 = false,
bool bold = false,
const std::string & family = "" )
inline

Definition at line 656 of file figure_render.hpp.

◆ charSpecColor()

bool nk::figrender::charSpecColor ( char c,
Rgb & out )
inline

Definition at line 77 of file figure_render.hpp.

◆ dataRange()

void nk::figrender::dataRange ( const std::vector< double > & v,
double & lo,
double & hi )
inline

Definition at line 606 of file figure_render.hpp.

◆ font5x7()

const std::uint8_t * nk::figrender::font5x7 ( char c)
inline

Definition at line 1961 of file figure_render.hpp.

◆ imageCmdRgb()

std::vector< std::uint8_t > nk::figrender::imageCmdRgb ( const Cmd & c)
inline

Definition at line 399 of file figure_render.hpp.

◆ logTicks()

std::vector< double > nk::figrender::logTicks ( double mn,
double mx )
inline

Definition at line 538 of file figure_render.hpp.

◆ namedPalette()

const std::uint8_t * nk::figrender::namedPalette ( const std::string & name,
int & n )
inline

Definition at line 311 of file figure_render.hpp.

◆ niceTicks()

std::vector< double > nk::figrender::niceTicks ( double mn,
double mx,
int target = 10 )
inline

Definition at line 521 of file figure_render.hpp.

◆ palette()

const std::vector< Rgb > & nk::figrender::palette ( )
inline

Definition at line 66 of file figure_render.hpp.

◆ parseCustomPalette()

std::vector< Rgb > nk::figrender::parseCustomPalette ( const std::string & json)
inline

Definition at line 339 of file figure_render.hpp.

◆ parseNestedDoubles()

void nk::figrender::parseNestedDoubles ( const std::string & j,
std::vector< double > & out,
size_t & rows,
size_t & cols )
inline

Definition at line 471 of file figure_render.hpp.

◆ parseStyle()

StyleParts nk::figrender::parseStyle ( const std::string & s)
inline

Definition at line 215 of file figure_render.hpp.

◆ parseTextExtras()

TextExtras nk::figrender::parseTextExtras ( const std::string & style)
inline

Definition at line 179 of file figure_render.hpp.

◆ parseTickLabelVec()

std::vector< std::string > nk::figrender::parseTickLabelVec ( const std::string & json)
inline

Definition at line 623 of file figure_render.hpp.

◆ parseVec()

std::vector< double > nk::figrender::parseVec ( const std::string & json)
inline

Definition at line 617 of file figure_render.hpp.

◆ renderAxes()

void nk::figrender::renderAxes ( const FigureState & fig,
const AxesState & ax,
Rect box,
std::vector< Cmd > & out )
inline

Definition at line 707 of file figure_render.hpp.

◆ renderFigureDisplay()

std::vector< Cmd > nk::figrender::renderFigureDisplay ( const FigureState & fig,
int W,
int H )
inline

Definition at line 1736 of file figure_render.hpp.

◆ renderFigureRgb()

std::vector< std::uint8_t > nk::figrender::renderFigureRgb ( const FigureState & fig,
int W,
int H )
inline

Definition at line 2184 of file figure_render.hpp.

◆ renderFigureSvg()

std::string nk::figrender::renderFigureSvg ( const FigureState & fig,
int W,
int H,
const SvgImageEmbedder & embed = {} )
inline

Definition at line 1848 of file figure_render.hpp.

◆ textColorSpec()

bool nk::figrender::textColorSpec ( const std::string & v,
Rgb & out )
inline

Definition at line 123 of file figure_render.hpp.

◆ tickLabel()

std::string nk::figrender::tickLabel ( double v)
inline

Definition at line 555 of file figure_render.hpp.

Variable Documentation

◆ kNamedPaletteHex

const NamedPaletteHex nk::figrender::kNamedPaletteHex[]
inline
Initial value:
= {
{"parula", "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"},
{"turbo", "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"},
{"jet", "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"},
{"hot", "0300000500000800000b00000d00001000001300001500001800001b00001d00002000002300002500002800002b00002d00003000003200003500003800003a00003d00004000004200004500004800004a00004d00005000005200005500005800005a00005d00006000006200006500006800006a00006d00007000007200007500007800007a00007d00008000008200008500008700008a00008d00008f00009200009500009700009a00009d00009f0000a20000a50000a70000aa0000ad0000af0000b20000b50000b70000ba0000bd0000bf0000c20000c50000c70000ca0000cd0000cf0000d20000d50000d70000da0000dc0000df0000e20000e40000e70000ea0000ec0000ef0000f20000f40000f70000fa0000fc0000ff0000ff0300ff0500ff0800ff0b00ff0d00ff1000ff1300ff1500ff1800ff1b00ff1d00ff2000ff2300ff2500ff2800ff2b00ff2d00ff3000ff3200ff3500ff3800ff3a00ff3d00ff4000ff4200ff4500ff4800ff4a00ff4d00ff5000ff5200ff5500ff5800ff5a00ff5d00ff6000ff6200ff6500ff6800ff6a00ff6d00ff7000ff7200ff7500ff7800ff7a00ff7d00ff8000ff8200ff8500ff8700ff8a00ff8d00ff8f00ff9200ff9500ff9700ff9a00ff9d00ff9f00ffa200ffa500ffa700ffaa00ffad00ffaf00ffb200ffb500ffb700ffba00ffbd00ffbf00ffc200ffc500ffc700ffca00ffcd00ffcf00ffd200ffd500ffd700ffda00ffdc00ffdf00ffe200ffe400ffe700ffea00ffec00ffef00fff200fff400fff700fffa00fffc00ffff00ffff04ffff08ffff0cffff10ffff14ffff18ffff1cffff20ffff24ffff28ffff2cffff30ffff34ffff38ffff3cffff40ffff44ffff48ffff4cffff50ffff54ffff58ffff5cffff60ffff64ffff68ffff6cffff70ffff74ffff78ffff7cffff80ffff83ffff87ffff8bffff8fffff93ffff97ffff9bffff9fffffa3ffffa7ffffabffffafffffb3ffffb7ffffbbffffbfffffc3ffffc7ffffcbffffcfffffd3ffffd7ffffdbffffdfffffe3ffffe7ffffebffffeffffff3fffff7fffffbffffff"},
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{"viridis", "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"},
}

Definition at line 293 of file figure_render.hpp.