mirror of
https://github.com/Hopiu/rpi-rgb-led-matrix.git
synced 2026-05-22 21:55:49 +00:00
7a0da0e136
before writing to another physical Canvas.
- RotateTransformer: rotates by multiple of 90 degrees
- LargeSquare64x64Transformer: does the 64x64 conversion from
earlier examples
- LinkedTransformer allows to have a sequence of transformers
applied.
o Provide a flag in demo-main to influence rotation.
81 lines
No EOL
2.2 KiB
C++
81 lines
No EOL
2.2 KiB
C++
// -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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// Copyright (C) 2014 Henner Zeller <h.zeller@acm.org>
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// Copyright (C) 2015 Christoph Friedrich <christoph.friedrich@vonaffenfels.de>
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//
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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 version 2.
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//
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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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//
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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, see <http://gnu.org/licenses/gpl-2.0.txt>
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#ifndef RPI_TRANSFORMER_H
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#define RPI_TRANSFORMER_H
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#include <vector>
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#include <cstddef>
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#include "canvas.h"
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namespace rgb_matrix {
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// Transformer for RotateCanvas
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class RotateTransformer : public CanvasTransformer {
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public:
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RotateTransformer(int angle);
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virtual ~RotateTransformer();
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void SetAngle(int angle);
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int angle();
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virtual Canvas *Transform(Canvas *output);
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private:
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// Transformer canvas to rotate the input canvas in 90° steps
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class TransformCanvas;
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TransformCanvas *canvas_;
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int angle_;
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};
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// Transformer for linked transformer objects
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// First transformer added will be considered last
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// (so it would the transformer that gets the original Canvas object)
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class LinkedTransformer : public CanvasTransformer {
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public:
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typedef std::vector<CanvasTransformer*> List;
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LinkedTransformer() {}
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LinkedTransformer(List transformer_list) : list_(transformer_list) {}
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void AddTransformer(CanvasTransformer *transformer);
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void AddTransformer(List transformer_list);
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void SetTransformer(List transformer_list);
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virtual Canvas *Transform(Canvas *output);
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private:
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List list_;
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};
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class LargeSquare64x64Transformer : public CanvasTransformer {
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public:
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LargeSquare64x64Transformer();
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virtual ~LargeSquare64x64Transformer();
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virtual Canvas *Transform(Canvas *output);
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private:
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class TransformCanvas;
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TransformCanvas *canvas_;
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};
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} // namespace rgb_matrix
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#endif // RPI_TRANSFORMER_H
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