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switched to a generic pixmap based renderer

This commit is contained in:
Christian Kroll 2010-04-20 00:24:42 +00:00
parent f703054e93
commit 750c09734f
1 changed files with 106 additions and 81 deletions
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71
animations/laborlogo.c
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@ -6,21 +6,36 @@
#include "../autoconf.h"
#include "../pixel.h"
#define PRB(a) pgm_read_byte(&(a))
#define PB(a) pgm_read_byte(&(a))
#define BITMAP_WIDTH 48
#define BITMAP_HEIGHT 48
#define VIEWPORT_WIDTH 16
#define VIEWPORT_HEIGHT 16
#if NUM_COLS > BITMAP_WIDTH
#define VIEWPORT_WIDTH BITMAP_WIDTH
#else
#define VIEWPORT_WIDTH NUM_COLS
#endif
#if NUM_ROWS > BITMAP_HEIGHT
#define VIEWPORT_HEIGHT BITMAP_HEIGHT
#else
#define VIEWPORT_HEIGHT NUM_ROWS
#endif
#define XDOMAIN (BITMAP_WIDTH - VIEWPORT_WIDTH)
#define YDOMAIN (BITMAP_HEIGHT - VIEWPORT_HEIGHT)
#define CHUNKDOMAIN (BITMAP_WIDTH - 8)
#define CHUNKCOUNT (((VIEWPORT_WIDTH - 1) / 8) + 1)
#define FRAME_TICK 75
#define FRAMECOUNT 400
static uint16_t laborlogo_getLine(const uint8_t x,
const uint8_t y)
static uint8_t laborlogo_getChunk(const uint8_t x, const uint8_t y)
{
assert(x <= BITMAP_WIDTH - VIEWPORT_WIDTH);
assert(x <= CHUNKDOMAIN);
assert(y < BITMAP_HEIGHT);
static const uint8_t nBitmap[48][6] PROGMEM =
@ -73,22 +88,20 @@ static uint16_t laborlogo_getLine(const uint8_t x,
{0xFF, 0xFF, 0x00, 0xF8, 0xFF, 0xFF},
{0xFF, 0xFF, 0xE0, 0x07, 0xFF, 0xFF}};
uint16_t nLine;
uint8_t nChunk;
uint8_t nAlignment = x % 8;
if (nAlignment == 0)
{
nLine = PRB(nBitmap[y][x / 8]) << 8;
nLine |= PRB((nBitmap[y][x / 8 + 1]));
nChunk = PB(nBitmap[y][x / 8]);
}
else
{
nLine = PRB(nBitmap[y][x / 8]) << (8 + nAlignment);
nLine |= PRB(nBitmap[y][x / 8 + 1]) << nAlignment;
nLine |= PRB(nBitmap[y][x / 8 + 2]) >> (8 - nAlignment);
nChunk = PB(nBitmap[y][x / 8]) << nAlignment;
nChunk |= PB(nBitmap[y][x / 8 + 1]) >> (8 - nAlignment);
}
return nLine;
return nChunk;
}
@ -98,24 +111,27 @@ static void laborlogo_drawViewport(const uint8_t nBitmapX,
assert(nBitmapX <= XDOMAIN);
assert(nBitmapY <= YDOMAIN);
for (uint8_t nVPortY = 0; nVPortY < 16; ++nVPortY)
for (int8_t y = 0; y < VIEWPORT_HEIGHT; ++y)
{
uint16_t nLineBuffer = laborlogo_getLine(nBitmapX, nVPortY + nBitmapY);
for (int8_t nVPortX = 0; nVPortX < 16; ++nVPortX)
for (int8_t x = VIEWPORT_WIDTH; x > 0; x -= 8)
{
if ((0x0001 << nVPortX) & nLineBuffer)
uint8_t nChunk;
if ((nBitmapX + x - 8) >= 0)
{
setpixel((pixel){nVPortX, nVPortY}, 3);
nChunk = laborlogo_getChunk(nBitmapX + x - 8, nBitmapY + y);
pixmap[2][y][CHUNKCOUNT - 1 - ((x - 1) / 8)] = nChunk;
}
else
{
setpixel((pixel){nVPortX, nVPortY}, 0);
nChunk = laborlogo_getChunk(nBitmapX, nBitmapY + y) >> (8 - x);
pixmap[2][y][CHUNKCOUNT - 1] = nChunk;
}
}
}
}
static void laborlogo_recalcVectors(const int8_t x,
static void laborlogo_recalcVector(const int8_t x,
const int8_t y,
int8_t *const pdx,
int8_t *const pdy)
@ -135,20 +151,29 @@ static void laborlogo_recalcVectors(const int8_t x,
}
}
void laborlogo()
{
uint16_t nCycles = FRAMECOUNT;
int8_t x = random8() % (XDOMAIN + 1);
int8_t y = random8() % (YDOMAIN + 1);
int8_t dx = 0;
int8_t dy = 0;
while (nCycles-- != 0)
clear_screen(0);
for (uint16_t nCycles = FRAMECOUNT; nCycles > 0; --nCycles)
{
laborlogo_drawViewport(x, y);
laborlogo_recalcVectors(x, y, &dx, &dy);
laborlogo_recalcVector(x, y, &dx, &dy);
#if BITMAP_WIDTH > VIEWPORT_WIDTH
x += dx;
#endif
#if BITMAP_HEIGHT > VIEWPORT_HEIGHT
y += dy;
#endif
wait(FRAME_TICK);
}
}