122 lines
2.8 KiB
C++
122 lines
2.8 KiB
C++
/*
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MD_Parola - Library for modular scrolling text and Effects
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See header file for comments
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Copyright (C) 2016 Marco Colli. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <MD_Parola.h>
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#include <MD_Parola_lib.h>
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/**
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* \file
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* \brief Implements FADE effect
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*/
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void MD_PZone::effectFade(bool bIn)
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// Fade the display in and out.
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// If the overall intensity is changed while the animation is running, the
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// intensity at the start of the animation will be restored at the end, overriding
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// any user code changes.
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{
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if (bIn) // incoming
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{
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switch (_fsmState)
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{
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case INITIALISE:
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PRINT_STATE("I FADE");
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_nextPos = 0;
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_endPos = getIntensity();
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zoneClear();
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_fsmState = GET_FIRST_CHAR;
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break;
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case GET_FIRST_CHAR:
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FSMPRINT(" I:", _nextPos);
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FSMPRINT("/", _endPos);
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setIntensity(_nextPos++);
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commonPrint();
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_fsmState = PUT_CHAR;
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break;
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case GET_NEXT_CHAR:
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case PUT_CHAR:
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case PAUSE:
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PRINT_STATE("I FADE");
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FSMPRINT(" I:", _nextPos);
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FSMPRINT("/", _endPos);
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// check if we have finished
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if (_nextPos > _endPos)
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_fsmState = PAUSE;
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else
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setIntensity(_nextPos++);
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break;
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default:
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PRINT_STATE("I FADE");
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_fsmState = PAUSE;
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}
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}
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else // exiting
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{
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switch (_fsmState)
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{
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case PAUSE:
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case INITIALISE:
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PRINT_STATE("O FADE");
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_nextPos = _endPos = getIntensity();
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FSMPRINT(" I:", _nextPos);
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FSMPRINT("/", _endPos);
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setIntensity(_nextPos);
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commonPrint();
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_fsmState = PUT_CHAR;
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break;
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case GET_FIRST_CHAR:
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case GET_NEXT_CHAR:
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case PUT_CHAR:
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PRINT_STATE("O FADE");
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FSMPRINT(" I:", _nextPos);
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FSMPRINT("/", _endPos);
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// check if we have finished
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if (_nextPos < 0)
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{
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setIntensity(_endPos); // set to original conditions
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zoneClear(); // display nothing - we are currently at 0
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_fsmState = END;
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}
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else
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setIntensity(_nextPos--);
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break;
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default:
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PRINT_STATE("O FADE");
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_fsmState = END;
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break;
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}
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}
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}
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