improved spiral(...) and random_bright(...) for non-square displays
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8a3ecd882e
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020efc3fd1
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@ -47,45 +47,32 @@ void test_palette2(){
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#ifdef ANIMATION_SPIRAL
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static void walk(cursor_t* cur, unsigned char steps, int delay){
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unsigned char x;
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for(x=steps;x--;){
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set_cursor(cur, next_pixel(cur->pos, cur->dir));
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void spiral(int delay) {
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clear_screen(0);
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static signed char const PROGMEM delta[5] = { 0, -1, 0, 1, 0 };
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unsigned char length[2] = { NUM_ROWS, NUM_COLS - 1 };
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unsigned char x = NUM_COLS - 1, y = NUM_ROWS, i = 0;
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while (length[i & 0x01]) {
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for (unsigned char j = 0; j < length[i & 0x01]; ++j) {
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x += pgm_read_byte(&delta[i]);
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y += pgm_read_byte(&delta[i + 1]);
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setpixel((pixel){x, y}, NUMPLANE);
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wait(delay);
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}
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}
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void spiral(int delay){
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clear_screen(0);
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cursor_t cur;
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cur.dir = right;
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cur.mode = set;
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set_cursor (&cur, (pixel){NUM_COLS-1,0});
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unsigned char clearbit=0;
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while(clearbit == 0){
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clearbit = 1;
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while (!get_next_pixel(cur.pos, cur.dir)){
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clearbit = 0;
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walk(&cur, 1, delay);
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length[i++ & 0x01]--;
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i %= 4;
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}
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cur.dir = direction_r(cur.dir);
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}
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cur.mode = clear;
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set_cursor(&cur, (pixel){(NUM_COLS/2)-1,(NUM_ROWS/2)-1});
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for(clearbit=0;clearbit==0;){
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if( get_next_pixel(cur.pos, direction_r(cur.dir)) ){
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cur.dir = direction_r(cur.dir);
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}
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if( get_next_pixel(cur.pos, cur.dir) == 1 ){
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walk(&cur , 1, delay);
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}else{
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clearbit = 1;
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i = (i + 2u) % 4u;
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while (length[0] <= NUM_ROWS && length[1] < NUM_COLS) {
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for (unsigned char j = 0; j < length[i & 0x01]; ++j) {
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setpixel((pixel){x, y}, 0);
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x += pgm_read_byte(&delta[i]);
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y += pgm_read_byte(&delta[i + 1]);
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wait(delay);
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}
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length[(i += 3) & 0x01]++;
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i %= 4;
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}
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}
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#endif
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@ -179,16 +166,17 @@ void fire()
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* void random_bright(void)
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* by Daniel Otte
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*/
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void random_bright(unsigned cycles){
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uint8_t t,x,y;
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while(cycles--){
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for(y=0; y<NUM_ROWS; ++y)
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for(x=0; x<NUM_COLS/4; ++x){
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t=random8();
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setpixel((pixel){x*4+0, y}, 0x3&(t>>0));
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setpixel((pixel){x*4+1, y}, 0x3&(t>>2));
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setpixel((pixel){x*4+2, y}, 0x3&(t>>4));
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setpixel((pixel){x*4+3, y}, 0x3&(t>>6));
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void random_bright(unsigned int cycles) {
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while (cycles--) {
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for (unsigned char p = NUMPLANE; p--;) {
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for (unsigned char y = NUM_ROWS; y--;) {
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for (unsigned char x = LINEBYTES; x--;) {
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if (p < (NUMPLANE - 1)) {
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pixmap[p][y][x] |= pixmap[p - 1][y][x];
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}
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pixmap[p][y][x] = random8();
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}
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}
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}
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wait(200);
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}
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