56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
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//
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// This source code is property of the Computer Graphics and Visualization
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// chair of the TU Dresden. Do not distribute in modified or unmodified form!
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// Copyright (C) 2016 CGV TU Dresden - All Rights Reserved
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//
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/*************************************************************************
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Canvas Store.
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This class stores a set of boolean pixels of the canvas and provides
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methods for modification. Set a pixel with the set_pixel method and get
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its state with the method "get_pixel". All methods that have a position
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as a parameter will perform a boundary check and put an error message
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to stdout if the boundaries are violated.
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For debugging purposes the method "draw_test_shape" will draw a shape
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that is suitable for testing the correctness of fill algorithms.
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*************************************************************************/
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#pragma once
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class canvas_buffer
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{
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public:
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// Initialize the store with a defined with and height
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canvas_buffer(int width, int height);
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// Free the memory used for the pixels
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~canvas_buffer();
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// Set a pixel at (x, y)
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void set_pixel(int x, int y);
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// Clear the pixel at (x, y)
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void clear_pixel(int x, int y);
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// Get the state of a pixel at (x, y)
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bool get_pixel(int x, int y) const;
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// Clear all pixels on the canvas
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void clear_canvas();
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// Get the width of the canvas in pixels
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int get_width() const;
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// Get the height of the canvas in pixels
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int get_height() const;
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// Draw the test shape
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void draw_test_shape();
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private:
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// The actual pixels store as array
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bool* pixels;
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// Width and height of the canvas
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int width, height;
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};
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