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Diffstat (limited to '3rdparty/bubbles/main.c')
| -rw-r--r-- | 3rdparty/bubbles/main.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/3rdparty/bubbles/main.c b/3rdparty/bubbles/main.c deleted file mode 100644 index 81c5dbe3..00000000 --- a/3rdparty/bubbles/main.c +++ /dev/null @@ -1,194 +0,0 @@ -/* Microcontroller graphic demo by Pascal Piazzalunga - * admin@serveurperso.com http://www.serveurperso.com - * https://www.youtube.com/watch?v=wyuJ-dqS2to - * Ported to stm32/ChibiOS/glx by Chris Baird. - * It's spinnin' bubbles, man. - * -- - * Licencing? Ask Pascal. Let's assume it is freely-distributable and - * modifiable, provided his name is kept in the source. - * -- - * Chris Baird,, <cjb@brushtail.apana.org.au> April 2013 - */ - -#include <math.h> -#include "ch.h" -#include "hal.h" -#include "gfx.h" - - -/* ---------------------------------------------------------------------- */ - -#define N 1024 /* Number of dots */ -#define SCALE 8192 -#define INCREMENT 512 /* INCREMENT = SCALE / sqrt(N) * 2 */ -#define PI2 6.283185307179586476925286766559 - -#define background RGB2COLOR(0,0,0) - -uint16_t width, height; -int16_t sine[SCALE+(SCALE/4)]; -int16_t *cosi = &sine[SCALE/4]; /* cos(x) = sin(x+90d)... */ - - -void initialize (void) -{ - uint16_t i; - - /* if you change the SCALE*1.25 back to SCALE, the program will - * occassionally overrun the cosi array -- however this actually - * produces some interesting effects as the BUBBLES LOSE CONTROL!!!! - */ - for (i = 0; i < SCALE+(SCALE/4); i++) - //sine[i] = (-SCALE/2) + (int)(sinf(PI2 * i / SCALE) * sinf(PI2 * i / SCALE) * SCALE); - sine[i] = (int)(sinf(PI2 * i / SCALE) * SCALE); -} - - -void matrix (int16_t xyz[3][N], color_t col[N]) -{ - static uint32_t t = 0; - int16_t x = -SCALE, y = -SCALE; - uint16_t i, s, d; - uint8_t red,grn,blu; - -#define RED_COLORS (32) -#define GREEN_COLORS (64) -#define BLUE_COLORS (32) - - for (i = 0; i < N; i++) - { - xyz[0][i] = x; - xyz[1][i] = y; - - d = sqrtf(x * x + y * y); /* originally a fastsqrt() call */ - s = sine[(t * 30) % SCALE] + SCALE; - - xyz[2][i] = sine[(d + s) % SCALE] * sine[(t * 10) % SCALE] / SCALE / 2; - - red = (cosi[xyz[2][i] + SCALE / 2] + SCALE) * - (RED_COLORS - 1) / SCALE / 2; - grn = (cosi[(xyz[2][i] + SCALE / 2 + 2 * SCALE / 3) % SCALE] + SCALE) * - (GREEN_COLORS - 1) / SCALE / 2; - blu = (cosi[(xyz[2][i] + SCALE / 2 + SCALE / 3) % SCALE] + SCALE) * - (BLUE_COLORS - 1) / SCALE / 2; - col[i] = ((red << 11) + (grn << 5) + blu); - - x += INCREMENT; - - if (x >= SCALE) x = -SCALE, y += INCREMENT; - } - t++; -} - - -void rotate (int16_t xyz[3][N], uint16_t angleX, uint16_t angleY, uint16_t angleZ) -{ - uint16_t i; - int16_t tmpX, tmpY; - int16_t sinx = sine[angleX], cosx = cosi[angleX]; - int16_t siny = sine[angleY], cosy = cosi[angleY]; - int16_t sinz = sine[angleZ], cosz = cosi[angleZ]; - - for (i = 0; i < N; i++) - { - tmpX = (xyz[0][i] * cosx - xyz[2][i] * sinx) / SCALE; - xyz[2][i] = (xyz[0][i] * sinx + xyz[2][i] * cosx) / SCALE; - xyz[0][i] = tmpX; - - tmpY = (xyz[1][i] * cosy - xyz[2][i] * siny) / SCALE; - xyz[2][i] = (xyz[1][i] * siny + xyz[2][i] * cosy) / SCALE; - xyz[1][i] = tmpY; - - tmpX = (xyz[0][i] * cosz - xyz[1][i] * sinz) / SCALE; - xyz[1][i] = (xyz[0][i] * sinz + xyz[1][i] * cosz) / SCALE; - xyz[0][i] = tmpX; - } -} - - -void draw(int16_t xyz[3][N], color_t col[N]) -{ - static uint16_t oldProjX[N] = {0}; - static uint16_t oldProjY[N] = {0}; - static uint8_t oldDotSize[N] = {0}; - uint16_t i, projX, projY, projZ, dotSize; - - for (i = 0; i < N; i++) - { - projZ = SCALE - (xyz[2][i] + SCALE) / 4; - projX = width / 2 + (xyz[0][i] * projZ / SCALE) / 25; - projY = height / 2 + (xyz[1][i] * projZ / SCALE) / 25; - dotSize = 3 - (xyz[2][i] + SCALE) * 2 / SCALE; - - gdispDrawCircle (oldProjX[i], oldProjY[i], oldDotSize[i], background); - - if (projX > dotSize && - projY > dotSize && - projX < width - dotSize && - projY < height - dotSize) - { - gdispDrawCircle (projX, projY, dotSize, col[i]); - oldProjX[i] = projX; - oldProjY[i] = projY; - oldDotSize[i] = dotSize; - } - } -} - - -/* ---------------------------------------------------------------------- */ - -int16_t angleX = 0, angleY = 0, angleZ = 0; -int16_t speedX = 0, speedY = 0, speedZ = 0; - -int16_t xyz[3][N]; -color_t col[N]; - - -int main (void) -{ - int pass = 0; - - halInit(); - chSysInit(); - gdispInit(); - - chThdSleepMilliseconds (10); - gdispClear (background); /* glitches.. */ - chThdSleepMilliseconds (10); - gdispClear (background); /* glitches.. */ - chThdSleepMilliseconds (10); - gdispClear (background); /* glitches.. */ - - width = (uint16_t)gdispGetWidth(); - height = (uint16_t)gdispGetHeight(); - - initialize(); - - for (;;) - { - matrix(xyz, col); - rotate(xyz, angleX, angleY, angleZ); - draw(xyz, col); - - angleX += speedX; - angleY += speedY; - angleZ += speedZ; - - if (pass > 400) speedY = 1; - if (pass > 800) speedX = 1; - if (pass > 1200) speedZ = 1; - pass++; - - if (angleX >= SCALE) angleX -= SCALE; - else if (angleX < 0) angleX += SCALE; - - if (angleY >= SCALE) angleY -= SCALE; - else if (angleY < 0) angleY += SCALE; - - if (angleZ >= SCALE) angleZ -= SCALE; - else if (angleZ < 0) angleZ += SCALE; - } -} - -/* ---------------------------------------------------------------------- */ |