63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/* -*- C++ -*- */
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/*
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GAV - Gpl Arcade Volleyball
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Copyright (C) 2002
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GAV team (http://sourceforge.net/projects/gav/)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "LogicalFrameSeq.h"
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#include "GameRenderer.h"
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#include "globals.h"
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using namespace std;
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/*
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start - the starting width
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zoom - the zoom factor calculated from background ratio
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step - the new width must be a 'step' multiple
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returns the zoom factor nearest to 'zoom', in order to obtain a 'step'
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multiple.
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*/
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double exactScaleFactor(int startw, double zoom, int step) {
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if ( step == 1 ) return zoom;
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double corr = 0.0;
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double ratio = 1/zoom;
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double fract = (double) startw / ratio;
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int temp = (int) round(fract / step);
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int adjustedResize = temp * step;
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// printf("W: %d NP: %d\n", startw, temp);
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double adjustedRatio = (double) startw / (double) adjustedResize;
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/*
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int tmp2 = (int) (startw / adjustedRatio);
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// printf ("ar: %g tmp2: %d\n", adjustedRatio, tmp2);
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if ( tmp2 < adjustedResize )
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corr = 0.5;
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*/
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return (1/adjustedRatio + (corr/(double) startw));
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}
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void LogicalFrameSeq::blit(int idx, SDL_Surface *dest,
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SDL_Rect *rect) {
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gameRenderer->display(dest, rect, _actualFrameSeq, idx);
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}
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