+++ /dev/null
-/*
- * evalgraph.c - Evaluation graph back-end part
- *
- * Author: Alessandro Scotti (Dec 2005)
- *
- * Copyright 2005 Alessandro Scotti
- *
- * Enhancments Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015,
- * 2016 Free Software Foundation, Inc.
- *
- * ------------------------------------------------------------------------
- *
- * GNU XBoard is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or (at
- * your option) any later version.
- *
- * GNU XBoard 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
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see http://www.gnu.org/licenses/. *
- *
- *------------------------------------------------------------------------
- ** See the file ChangeLog for a revision history. */
-
-// code refactored by HGM to obtain front-end / back-end separation
-
-#include "config.h"
-
-#include <stdio.h>
-
-#if STDC_HEADERS
-# include <stdlib.h>
-# include <string.h>
-#else /* not STDC_HEADERS */
-# if HAVE_STRING_H
-# include <string.h>
-# else /* not HAVE_STRING_H */
-# include <strings.h>
-# endif /* not HAVE_STRING_H */
-#endif /* not STDC_HEADERS */
-
-#include "common.h"
-#include "frontend.h"
-#include "backend.h"
-#include "evalgraph.h"
-
-/* Module globals */
-ChessProgramStats_Move * currPvInfo;
-int currFirst = 0;
-int currLast = 0;
-int currCurrent = -1;
-int range = 1;
-int differentialView;
-
-int nWidthPB = 0;
-int nHeightPB = 0;
-
-int MarginX = 18;
-int MarginW = 4;
-int MarginH = 4;
-
-// back-end
-static void
-DrawLine (int x1, int y1, int x2, int y2, int penType)
-{
- DrawSegment( x1, y1, NULL, NULL, PEN_NONE );
- DrawSegment( x2, y2, NULL, NULL, penType );
-}
-
-// back-end
-static void
-DrawLineEx (int x1, int y1, int x2, int y2, int penType)
-{
- int savX, savY;
- DrawSegment( x1, y1, &savX, &savY, PEN_NONE );
- DrawSegment( x2, y2, NULL, NULL, penType );
- DrawSegment( savX, savY, NULL, NULL, PEN_NONE );
-}
-
-// back-end
-static int
-GetPvScore (int index)
-{
- int score = currPvInfo[ index ].score;
-
- if(differentialView) score = index < currLast-1 ? -currPvInfo[ index+1 ].score - score : 0;
- if( index & 1 ) score = -score; /* Flip score for black */
-
- return score;
-}
-
-char *
-MakeEvalTitle (char *title)
-{
- int score, depth;
- static char buf[MSG_SIZ];
-
- if( currCurrent <0 ) return title; // currCurrent = -1 crashed WB on start without ini file!
- score = currPvInfo[ currCurrent ].score;
- depth = currPvInfo[ currCurrent ].depth;
-
- if( depth <=0 ) return title;
- if( currCurrent & 1 ) score = -score; /* Flip score for black */
- snprintf(buf, MSG_SIZ, "%s {%d: %s%.2f/%-2d %d}", title, currCurrent/2+1,
- score>0 ? "+" : " ", score/100., depth, (currPvInfo[currCurrent].time+50)/100);
-
- return buf;
-}
-
-// back-end
-/*
- For a centipawn value, this function returns the height of the corresponding
- histogram, centered on the reference axis.
-
- Note: height can be negative!
-*/
-static int
-GetValueY (int value)
-{
- if( value < -range*700 ) value = -range*700;
- if( value > +range*700 ) value = +range*700;
- if(value > 100*range) value += (appData.zoom - 1)*100*range; else
- if(value < -100*range) value -= (appData.zoom - 1)*100*range; else
- value *= appData.zoom;
- return (nHeightPB / 2) - (int)(value * (nHeightPB - 2*MarginH) / ((1200. + 200.*appData.zoom)*range));
-}
-
-// the brush selection is made part of the DrawLine, by passing a style argument
-// the wrapper for doing the text output makes this back-end
-static void
-DrawAxisSegmentHoriz (int value, Boolean drawValue)
-{
- int y = GetValueY( range*value*100 );
-
- if( drawValue ) {
- char buf[MSG_SIZ], *b = buf;
-
- if( value > 0 ) *b++ = '+';
- sprintf(b, "%d", range*value);
-
- DrawEvalText(buf, strlen(buf), y);
- }
- // [HGM] counts on DrawEvalText to have select transparent background for dotted line!
- DrawLine( MarginX, y, MarginX + MarginW, y, PEN_BLACK ); // Y-axis tick marks
- DrawLine( MarginX + MarginW, y, nWidthPB - MarginW, y, PEN_DOTTED ); // hor grid
-}
-
-// The DrawLines again must select their own brush.
-// the initial brush selection is useless? BkMode needed for dotted line and text
-static void
-DrawAxis ()
-{
- int cy = nHeightPB / 2, space = nHeightPB/(6 + appData.zoom);
-
- DrawAxisSegmentHoriz( +5, TRUE );
- DrawAxisSegmentHoriz( +3, space >= 20 );
- DrawAxisSegmentHoriz( +1, space >= 20 && space*appData.zoom >= 40 );
- DrawAxisSegmentHoriz( 0, TRUE );
- DrawAxisSegmentHoriz( -1, space >= 20 && space*appData.zoom >= 40 );
- DrawAxisSegmentHoriz( -3, space >= 20 );
- DrawAxisSegmentHoriz( -5, TRUE );
-
- DrawLine( MarginX + MarginW, cy, nWidthPB - MarginW, cy, PEN_BLACK ); // x-axis
- DrawLine( MarginX + MarginW, MarginH, MarginX + MarginW, nHeightPB - MarginH, PEN_BLACK ); // y-axis
-}
-
-// back-end
-static void
-DrawHistogram (int x, int y, int width, int value, int side)
-{
- int left, top, right, bottom;
-
- if( value > -appData.evalThreshold*range && value < +appData.evalThreshold*range ) return;
-
- left = x;
- right = left + width + 1;
-
- if( value > 0 ) {
- top = GetValueY( value );
- bottom = y+1;
- }
- else {
- top = y;
- bottom = GetValueY( value ) + 1;
- }
-
-
- if( width == MIN_HIST_WIDTH ) {
- right--;
- DrawRectangle( left, top, right, bottom, side, FILLED );
- }
- else {
- DrawRectangle( left, top, right, bottom, side, OPEN );
- }
-}
-
-// back-end
-static void
-DrawSeparator (int index, int x)
-{
- if( index > 0 ) {
- if( index == currCurrent ) {
- DrawLineEx( x, MarginH, x, nHeightPB - MarginH, PEN_BLUEDOTTED );
- }
- else if( (index % 20) == 0 ) {
- DrawLineEx( x, MarginH, x, nHeightPB - MarginH, PEN_DOTTED );
- }
- }
-}
-
-// made back-end by replacing MoveToEx and LineTo by DrawSegment
-/* Actually draw histogram as a diagram, cause there's too much data */
-static void
-DrawHistogramAsDiagram (int cy, int paint_width, int hist_count)
-{
- double step;
- int i;
-
- /* Rescale the graph every few moves (as opposed to every move) */
- hist_count -= hist_count % 8;
- hist_count += 8;
- hist_count /= 2;
-
- step = (double) paint_width / (hist_count + 1);
-
- for( i=0; i<2; i++ ) {
- int index = currFirst;
- int side = (currCurrent + i + 1) & 1; /* Draw current side last */
- double x = MarginX + MarginW;
-
- if( (index & 1) != side ) {
- x += step / 2;
- index++;
- }
-
- DrawSegment( (int) x, cy, NULL, NULL, PEN_NONE );
-
- index += 2;
-
- while( index < currLast ) {
- x += step;
-
- DrawSeparator( index, (int) x );
-
- /* Extend line up to current point */
- if( currPvInfo[index].depth > 0 ) {
- DrawSegment((int) x, GetValueY( GetPvScore(index) ), NULL, NULL, (side==0 ? PEN_BOLDWHITE: PEN_BOLDBLACK) );
- }
-
- index += 2;
- }
- }
-}
-
-// back-end, delete pen selection
-static void
-DrawHistogramFull (int cy, int hist_width, int hist_count)
-{
- int i;
-
-// SelectObject( hdcPB, GetStockObject(BLACK_PEN) );
-
- for( i=0; i<hist_count; i++ ) {
- int index = currFirst + i;
- int x = MarginX + MarginW + index * hist_width;
-
- /* Draw a separator every 10 moves */
- DrawSeparator( index, x );
-
- /* Draw histogram */
- if( currPvInfo[i].depth > 0 ) {
- DrawHistogram( x, cy, hist_width, GetPvScore(index), index & 1 );
- }
- }
-}
-
-typedef struct {
- int cy;
- int hist_width;
- int hist_count;
- int paint_width;
-} VisualizationData;
-
-// back-end
-static Boolean
-InitVisualization (VisualizationData *vd)
-{
- Boolean result = FALSE;
-
- vd->cy = nHeightPB / 2;
- vd->hist_width = MIN_HIST_WIDTH;
- vd->hist_count = currLast - currFirst;
- vd->paint_width = nWidthPB - MarginX - 2*MarginW;
-
- if( vd->hist_count > 0 ) {
- result = TRUE;
-
- /* Compute width */
- vd->hist_width = vd->paint_width / vd->hist_count;
-
- if( vd->hist_width > MAX_HIST_WIDTH ) vd->hist_width = MAX_HIST_WIDTH;
-
- vd->hist_width -= vd->hist_width % 2;
- }
-
- return result;
-}
-
-// back-end
-static void
-DrawHistograms ()
-{
- VisualizationData vd;
- int i; double step = 1;
-
- if( InitVisualization( &vd ) ) {
- if( vd.hist_width < MIN_HIST_WIDTH ) {
- DrawHistogramAsDiagram( vd.cy, vd.paint_width, vd.hist_count );
- step = 0.5*vd.paint_width / (((vd.hist_count | 7) + 1)/2 + 1.);
- }
- else {
- DrawHistogramFull( vd.cy, step = vd.hist_width, vd.hist_count );
- }
- }
- if(!differentialView) return;
- differentialView = 0;
- DrawSegment( MarginX + MarginW, vd.cy, NULL, NULL, PEN_NONE );
- for( i=0; i<vd.hist_count; i++ ) {
- int index = currFirst + i;
- int x = MarginX + MarginW + index * step + step/2;
- DrawSegment((int) x, GetValueY( GetPvScore(index) ), NULL, NULL, PEN_ANY );
- }
- differentialView = 1;
-}
-
-// back-end
-int
-GetMoveIndexFromPoint (int x, int y)
-{
- int result = -1;
- int start_x = MarginX + MarginW;
- VisualizationData vd;
-
- if( x >= start_x && InitVisualization( &vd ) ) {
- /* Almost an hack here... we duplicate some of the paint logic */
- if( vd.hist_width < MIN_HIST_WIDTH ) {
- double step;
-
- vd.hist_count -= vd.hist_count % 8;
- vd.hist_count += 8;
- vd.hist_count /= 2;
-
- step = (double) vd.paint_width / (vd.hist_count + 1);
- step /= 2;
-
- result = (int) (0.5 + (double) (x - start_x) / step);
- }
- else {
- result = (x - start_x) / vd.hist_width;
- }
- }
-
- if( result >= currLast ) {
- result = -1;
- }
-
- return result;
-}
-
-// init and display part split of so they can be moved to front end
-void
-PaintEvalGraph (void)
-{
- VariantClass v = gameInfo.variant;
- range = (gameInfo.holdingsWidth && v != VariantSuper && v != VariantGreat && v != VariantSChess) ? 2 : 1; // [HGM] double range in drop games
- /* Draw */
- DrawRectangle(0, 0, nWidthPB, nHeightPB, 2, FILLED);
- DrawAxis();
- DrawHistograms();
-}
projects / xboard.git / blobdiff