84 lines
3.1 KiB
C
84 lines
3.1 KiB
C
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/*
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* Copyright (c) 2012, 2013, Joel Bodenmann aka Tectu <joel@unormal.org>
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* Copyright (c) 2012, 2013, Andrew Hannam aka inmarket
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the <organization> nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "gfx.h"
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#define PIXMAP_WIDTH 40
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#define PIXMAP_HEIGHT 10
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static GDisplay *pix;
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static pixel_t *surface;
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int main(void) {
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coord_t width, height;
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coord_t i, j;
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// Initialize and clear the display
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gfxInit();
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// Get the screen size
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width = gdispGetWidth();
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height = gdispGetHeight();
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// Create a pixmap and get a pointer to the bits
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pix = gdispCreatePixmap(PIXMAP_WIDTH, PIXMAP_HEIGHT);
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surface = gdispGetPixmapBits(pix);
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// A pixmap can be treated either as a virtual display or as a memory framebuffer surface.
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// We demonstrate writing to it using both methods.
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// First demo drawing onto the surface directly
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for(j = 0; j < PIXMAP_HEIGHT; j++)
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for(i = 0; i < PIXMAP_WIDTH; i++)
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surface[j*PIXMAP_WIDTH + i] = RGB2COLOR(0, 255-i*(256/PIXMAP_WIDTH), j*(256/PIXMAP_HEIGHT));
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// Secondly, show drawing a line on it like a virtual display
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gdispGDrawLine(pix, 0, 0, gdispGGetWidth(pix)-1, gdispGGetHeight(pix)-1, White);
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i = j = 0;
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while(TRUE) {
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// Clear the old position
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gdispFillArea(i, j, PIXMAP_WIDTH, PIXMAP_HEIGHT, Black);
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// Change the position
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i += PIXMAP_WIDTH/2;
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if (i >= width - PIXMAP_WIDTH/2) {
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i %= width - PIXMAP_WIDTH/2;
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j = (j + PIXMAP_HEIGHT/2) % (height - PIXMAP_HEIGHT/2);
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}
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// Blit the pixmap to the real display at the new position
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gdispBlitArea(i, j, PIXMAP_WIDTH, PIXMAP_HEIGHT, surface);
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// Wait
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gfxSleepMilliseconds(100);
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}
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}
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