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#include "../compat/pgmspace.h"
#include "../random/prng.h"
#include "../config.h"
#include "../pixel.h"
#include "../util.h"
#define RANDOM8(x) random8(x)
#define PGM(x) pgm_read_byte(&(x))
// straight or non straight line from one point to the other
// value=brightness
static void line(pixel p1, pixel p2, unsigned char value)
{
char dx, dy, stepx, stepy, fraction;
dy = p2.y - p1.y;
dx = p2.x - p1.x;
if (dy < 0)
{
dy = -dy;
stepy = -1;
}
else
{
stepy = 1;
}
if (dx < 0)
{
dx = -dx;
stepx = -1;
}
else
{
stepx = 1;
}
dx <<= 1;
dy <<= 1;
setpixel(p1, value);
if (dx > dy)
{
fraction = dy - (dx >> 1);
while (p1.x != p2.x)
{
if (fraction >= 0)
{
p1.y += stepy;
fraction -= dx;
}
p1.x += stepx;
fraction += dy;
setpixel(p1, value);
}
}
else
{
fraction = dx - (dy >> 1);
while (p1.y != p2.y)
{
if (fraction >= 0)
{
p1.x += stepx;
fraction -= dy;
}
p1.y += stepy;
fraction += dx;
setpixel(p1, value);
}
}
}
// filled_rectangle p1=upper right corner, w=width, h=height ,
// value=brightness
static void filled_rectangle(pixel p1,
unsigned char w,
unsigned char h,
unsigned char value)
{
unsigned char y;
for (y = p1.y; y < (p1.y + h); y++)
{
line((pixel){p1.x,y}, (pixel){(p1.x+w-1),y}, value);
}
}
void checkbox()
{
unsigned char x, delay = 250;
// quadrat aus linien
line((pixel){0, 0}, (pixel){7, 0}, 3);
wait (delay);
line ((pixel){7, 0}, (pixel){7, 7}, 3);
wait (delay);
line ((pixel){7, 7}, (pixel){0, 7}, 3);
wait (delay);
line ((pixel){0, 7}, (pixel){0, 0}, 3);
wait (delay);
// 2 diagonale lininen
line ((pixel){7, 7}, (pixel){0, 0}, 3);
wait (delay);
line ((pixel){0, 7}, (pixel){7, 0}, 3);
wait (delay * 3);
for (x = NUM_COLS; x--;)
{
// shift image right
shift_pixmap_l ();
wait (30);
}
}
void movinglines()
{
unsigned char x, y, n;
line((pixel){NUM_COLS - 1, NUM_ROWS - 1}, (pixel){NUM_COLS - 1, 0}, 3);
// linie wandert nach rechts
for (x = 0; x < NUM_COLS; x++)
{
shift_pixmap_l ();
wait (100);
}
// von unten nach oben
for (y = NUM_ROWS; y--;)
{
line ((pixel){0, y}, (pixel){NUM_COLS - 1, y}, 3);
wait (100);
line ((pixel){0, y}, (pixel){NUM_COLS - 1, y}, 0);
//wait(10);
}
// eine linie von rechts nach links und 1-8 mal von oben nach unten
// je nach display format das ganze 4 mal
for (n = 0; n < 4; n++)
{
for (x = 0; x < NUM_COLS - 1; x++)
{
y = x % NUM_ROWS;
line ((pixel){0, y}, (pixel){NUM_COLS - 1, y}, 3);
line ((pixel){x, 0}, (pixel){x, NUM_ROWS - 1}, 3);
wait (50);
line ((pixel){0, y}, (pixel){NUM_COLS - 1, y}, 0);
line ((pixel){x, 0}, (pixel){x, NUM_ROWS - 1}, 0);
//wait(10);
}
}
}
//rechteckmuster mit helligkeitsstufen
void rectangle1()
{
unsigned char x, value, xcenter, ycenter, size;
unsigned int delay = 500;
xcenter = NUM_COLS / 2;
ycenter = NUM_ROWS / 2;
clear_screen(0);
size = NUM_ROWS;
value = 3;
for (x = 8; x > 0; x--)
{
if (value < NUMPLANE)
value++;
else
value = 0;
filled_rectangle((pixel){(xcenter - x), (ycenter - x)},
size, size, value);
wait (delay);
size -= 2;
}
wait (delay * 3);
}
// zufallsrechtecke
void rectangles()
{
unsigned char value, n, x, y, h, w;
clear_screen(0);
for (n = 0; n < 60; n++)
{
x = RANDOM8() % NUM_COLS;
y = RANDOM8() % NUM_ROWS;
h = RANDOM8() % NUM_COLS / 2;
w = RANDOM8() % NUM_ROWS / 2;
value = RANDOM8() % (NUMPLANE + 1);
filled_rectangle((pixel){x, y}, w, h, value);
wait (500 + RANDOM8 () % 3000);
}
}
// schräge linien die aufblitzen
void lines1()
{
unsigned char value, n, x, y, h, w;
unsigned int delay = 500;
clear_screen(0);
for (n = 0; n < 200; n++)
{
x = RANDOM8() % NUM_COLS;
y = RANDOM8() % NUM_ROWS;
h = RANDOM8() % NUM_COLS;
w = RANDOM8() % NUM_ROWS;
value = RANDOM8() % (NUMPLANE + 1);
line((pixel){x, y}, (pixel){w, h}, value);
wait (RANDOM8 () % delay);
line ((pixel){x, y}, (pixel){w, h}, 0);
}
}
// random dots
void dots1()
{
unsigned char n, x, y;
clear_screen(0);
for (n = 50; n--;)
{
x = RANDOM8() % NUM_COLS;
y = RANDOM8() % NUM_ROWS;
static unsigned char const color[5] PROGMEM = {1, 2, 3, 2, 1};
for (unsigned char i = 0; i < 5; ++i)
{
setpixel ((pixel){x, y}, PGM(color[i]));
wait(100);
}
wait ((RANDOM8 () % 255) * 10);
}
}