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image.h
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Tue, Aug 6, 15:21

image.h
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/* -*- c++ -*- ----------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
#ifndef LMP_IMAGE_H
#define LMP_IMAGE_H
#include <math.h>
#include <stdio.h>
#include "pointers.h"
namespace LAMMPS_NS {
class Image : protected Pointers {
public:
int width,height; // size of image
double theta,phi; // view image from theta,phi
double xctr,yctr,zctr; // center of image in user coords
double up[3]; // up direction in image
double zoom; // zoom factor
double persp; // perspective factor
double shiny; // shininess of objects
int ssao; // SSAO on or off
int seed; // RN seed for SSAO
double ssaoint; // strength of shading from 0 to 1
double *boxcolor; // color to draw box outline with
int background[3]; // RGB values of background
Image(class LAMMPS *, int);
~Image();
void buffers();
void clear();
void merge();
void write_JPG(FILE *);
void write_PNG(FILE *);
void write_PPM(FILE *);
void view_params(double, double, double, double, double, double);
void draw_sphere(double *, double *, double);
void draw_cube(double *, double *, double);
void draw_cylinder(double *, double *, double *, double, int);
void draw_triangle(double *, double *, double *, double *);
void draw_box(double (*)[3], double);
void draw_axes(double (*)[3], double);
int map_dynamic(int);
int map_reset(int, int, char **);
int map_minmax(int, double, double);
double *map_value2color(int, double);
int addcolor(char *, double, double, double);
double *element2color(char *);
double element2diam(char *);
double *color2rgb(const char *, int index=0);
int default_colors();
private:
int me,nprocs;
int npixels;
class ColorMap **maps;
int nmap;
double *depthBuffer,*surfaceBuffer;
double *depthcopy,*surfacecopy;
unsigned char *imageBuffer,*rgbcopy,*writeBuffer;
// constant view params
double FOV;
double ambientColor[3];
double keyLightTheta;
double keyLightPhi;
double keyLightColor[3];
double fillLightTheta;
double fillLightPhi;
double fillLightColor[3];
double backLightTheta;
double backLightPhi;
double backLightColor[3];
double specularHardness;
double specularIntensity;
double SSAORadius;
int SSAOSamples;
double SSAOJitter;
// dynamic view params
double zdist;
double tanPerPixel;
double camDir[3],camUp[3],camRight[4],camPos[3];
double keyLightDir[3],fillLightDir[3],backLightDir[3];
double keyHalfDir[3];
// color values
int ncolors;
char **username;
double **userrgb;
// SSAO RNG
class RanMars *random;
// internal methods
void draw_pixel(int, int, double, double *, double*);
void compute_SSAO();
// inline functions
inline double saturate(double v) {
if (v < 0.0) return 0.0;
else if (v > 1.0) return 1.0;
else return v;
}
inline double distance(double* a, double* b) {
return sqrt((a[0] - b[0]) * (a[0] - b[0]) +
(a[1] - b[1]) * (a[1] - b[1]) +
(a[2] - b[2]) * (a[2] - b[2]));
}
};
// ColorMap class
class ColorMap : protected Pointers {
public:
int dynamic; // 0/1 if lo/hi bounds are static/dynamic
ColorMap(class LAMMPS *, class Image*);
~ColorMap();
int reset(int, char **);
int minmax(double, double);
double *value2color(double);
private:
class Image *image; // caller with color2rgb() method
int mstyle,mrange; // 2-letter style/range of color map
int mlo,mhi; // bounds = NUMERIC or MINVALUE or MAXVALUE
double mlovalue,mhivalue; // user bounds if NUMERIC
double locurrent,hicurrent; // current bounds for this snapshot
double mbinsize,mbinsizeinv; // bin size for sequential color map
double interpolate[3]; // local storage for returned RGB color
struct MapEntry {
int single,lo,hi; // NUMERIC or MINVALUE or MAXVALUE
double svalue,lvalue,hvalue; // actual value
double *color; // RGB values
};
MapEntry *mentry;
int nentry;
};
}
#endif
/* ERROR/WARNING messages:
E: Invalid image up vector
Up vector cannot be (0,0,0).
*/

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