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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// Stores a "reduced" (i.e. lower-resolution) version of a 2-D array.
// The source data is passed one row at a time.
//
// This is used to draw graphs of 2-D data that may have much higher
// resolution in either or both dimensions than is useful for screen display.
//
// To use this:
//
// call set_max_dims() to set maximum dimensions of reduced array.
// (change this when window size changes)
// call init() to prepare to reduce a source array.
// call add_source_row() for each row of the source array.
// read nvalid_rows to see how many rows are in reduced array so far
// call rrow() to get a pointer to a particular row
// or call draw() to generate a picture.
// This is currently implemented as follows:
// If both dimensions are reduced (source dimension greater than reduced dim)
// then draw the graph as vertical lines.
// If reduced in one dimension, draw vertical rectangles.
// Otherwise draw quadrilaterals.
#ifndef BOINC_REDUCE_H
#define BOINC_REDUCE_H
#define MAX_DATA 65536
#define MAX_DIMX 1024
struct REDUCED_ARRAY_DATA {
float rdata[MAX_DATA];
int rdimx, rdimy; // size of the reduced array
float rdata_max; // max value in array
float rdata_min; // min value in array
inline float* rrow(int j) {
return rdata + j*rdimx;
}
};
// THE PART RELEVANT TO GENERATION FOLLOWS
#define REDUCE_METHOD_AVG 0 // Take the average of reduced elements
#define REDUCE_METHOD_SUM 1 // Take the sum of reduced elements
#define REDUCE_METHOD_MAX 2 // Take the maximum of reduced elements
#define REDUCE_METHOD_MIN 3 // Take the minimum of reduced elements
struct REDUCED_ARRAY_GEN: REDUCED_ARRAY_DATA {
float ftemp[MAX_DIMX];
int itemp[MAX_DIMX];
int sdimx, sdimy; // size of the source array
int scury; // next row of source array
// the following 2 are relevant only if sdimy > rdimy
int last_ry; // last row index accumulated into
int last_ry_count; // number of source rows accumulated so far
int nvalid_rows; // number of valid rows in reduced array
int reduce_method; // Which method to use for data row reduction
void init_data(int, int);
void reduce_source_row(float*, float*);
void add_source_row(float*);
bool full();
void reset();
void update_max(int row);
};
// THE PART RELEVANT TO RENDERING FOLLOWS
enum GRAPH_STYLE {
GRAPH_STYLE_RECTANGLES,
GRAPH_STYLE_PLANES,
GRAPH_STYLE_WIREFRAME,
GRAPH_STYLE_SURFACE
};
struct REDUCED_ARRAY_RENDER: REDUCED_ARRAY_DATA {
int ndrawn_rows; // number of rows drawn so far
float draw_pos[3];
float draw_size[3];
float draw_deltax;
float draw_deltaz;
double hue0;
double dhue;
float alpha;
char* xlabel,*ylabel,*zlabel;
GRAPH_STYLE draw_style;
double start_time;
void init(double grow, double hold);
void init_display(
GRAPH_STYLE, float*, float*, double, double, float, char*, char*, char*
);
void new_array();
void draw_row_quad(int);
void draw_row_rect_x(int);
void draw_row_rect_y(int);
void draw_row_line(int);
void draw(int, int);
void draw_new();
void draw_all();
void draw_part(double frac);
void draw_axes();
void draw_axis_labels();
void draw_labels();
};
#endif
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