added demos/3thparty
Joel Bodenmann
parent
df5c3fd6dd
commit
3eea362fae
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/**
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* This file has a different license to the rest of the GFX system.
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* You can copy, modify and distribute this file as you see fit.
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* You do not need to publish your source modifications to this file.
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* The only thing you are not permitted to do is to relicense it
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* under a different license.
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*/
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#ifndef _GFXCONF_H
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#define _GFXCONF_H
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/* GFX sub-systems to turn on */
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#define GFX_USE_GDISP TRUE
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#define GFX_USE_GWIN FALSE
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#define GFX_USE_GEVENT FALSE
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#define GFX_USE_GTIMER FALSE
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#define GFX_USE_GINPUT FALSE
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/* Features for the GDISP sub-system. */
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#define GDISP_NEED_VALIDATION FALSE
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#define GDISP_NEED_CLIP FALSE
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#define GDISP_NEED_TEXT FALSE
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#define GDISP_NEED_CIRCLE FALSE
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#define GDISP_NEED_ELLIPSE FALSE
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#define GDISP_NEED_ARC FALSE
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#define GDISP_NEED_SCROLL FALSE
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#define GDISP_NEED_PIXELREAD FALSE
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#define GDISP_NEED_CONTROL FALSE
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#define GDISP_NEED_MULTITHREAD FALSE
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#define GDISP_NEED_ASYNC FALSE
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#define GDISP_NEED_MSGAPI FALSE
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/* Builtin Fonts */
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#define GDISP_INCLUDE_FONT_SMALL FALSE
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#define GDISP_INCLUDE_FONT_LARGER FALSE
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#define GDISP_INCLUDE_FONT_UI1 FALSE
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#define GDISP_INCLUDE_FONT_UI2 FALSE
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#define GDISP_INCLUDE_FONT_LARGENUMBERS FALSE
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#endif /* _GFXCONF_H */
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/* Derived from the 2011 IOCCC submission by peter.eastman@gmail.com
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* http://www.ioccc.org/2011/eastman/eastman.c
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* --
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* Public Domain -- but you're looking at this for ideas of techniques
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* and methods, not trying to cut&paste an entire application, anyway.
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* --
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* When you need to blit an entire screenfull of data to an LCD
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* display, the basic idea is to exploit the auto-increment feature of
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* the display controller when it writes to screen memory. You start
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* by resetting the 'cursor' to the 0,0 position, and then stream
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* width*height pixels out.
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* --
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* Chris Baird,, <cjb@brushtail.apana.org.au> April 2013
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*/
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#include <math.h>
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#include "ch.h"
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#include "hal.h"
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#include "gfx.h"
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#include "ssd2119.h"
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#define Lightgrey (HTML2COLOR(0xC0C0C0))
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#define Midgrey (HTML2COLOR(0x606060))
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#define Darkgrey (HTML2COLOR(0x303030))
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/* ---------------------------------------------------------------------- */
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/* As of early April 2013, the /gfx extension tries to keep the low-level
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* stuff away from our filthy paws. So Code Duplication.
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* (Possibly to be replaced with gdispStartStream(), gdispWriteStream()
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* and gdispStopStream() in the future.)
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*/
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#define GDISP_REG (*((volatile uint16_t *) 0x60000000)) /* DC = 0 */
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#define GDISP_RAM (*((volatile uint16_t *) 0x60100000)) /* DC = 1 */
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inline void write_index (uint16_t index) { GDISP_REG = index; }
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inline void write_data (uint16_t data) { GDISP_RAM = data; }
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#define write_reg(reg, data) { write_index(reg); write_data(data); }
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void reset_cursor (void)
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{
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write_reg (SSD2119_REG_X_RAM_ADDR, 0);
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write_reg (SSD2119_REG_Y_RAM_ADDR, 0);
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}
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#define StartStream() { write_index (SSD2119_REG_RAM_DATA); }
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#define WriteStream(x) { write_data (x); }
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#define StopStream() /* NOP */
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/* ---------------------------------------------------------------------- */
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void main (void)
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{
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uint16_t xx, yy, colour;
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halInit();
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chSysInit();
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gdispInit();
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uint16_t width = (uint16_t)gdispGetWidth();
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uint16_t height = (uint16_t)gdispGetHeight();
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float i=height/5+height%2+1, floorstart=height/5-1, spherespin=0.0,
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l=width/2, m=height/4, n=.01*width, o=0.0, rotspeed=0.1, h, f, g;
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while (TRUE)
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{
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reset_cursor ();
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StartStream ();
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for (xx=yy=0;
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h = (m-yy)/i, f=-.3*(g=(l-xx)/i)+.954*h, yy<height;
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yy += (xx = ++xx%width)==0 )
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{
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if (g*g < 1-h*h) /* if inside the ball */
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if (((int)(9-spherespin+(.954*g+.3*h)/sqrtf(1-f*f))+(int)(2+f*2))%2==0)
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colour = Red;
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else
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colour = White;
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else
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{
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if (xx<floorstart || xx>width-floorstart)
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colour = Darkgrey; /* side wall */
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else
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colour = Lightgrey; /* back wall */
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if (yy > height-floorstart)
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if (xx < height-yy || height-yy > width-xx) /* floor */
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colour = Darkgrey;
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else
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colour = Midgrey;
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if (g*(g+.6)+.09+h*h < 1)
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colour >>= 1; /* ball shadow; make it darker */
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}
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WriteStream (colour); /* pixel to the LCD */
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}
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StopStream();
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spherespin += rotspeed;
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m += o;
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o = m > height-1.75*floorstart ? -.04*height : o+.002*height;
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n = (l+=n)<i || l>width-i ? rotspeed=-rotspeed,-n : n;
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}
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}
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/* ---------------------------------------------------------------------- */
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@ -0,0 +1,3 @@
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target extended-remote :4242
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file build/ch.elf
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/**
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* This file has a different license to the rest of the GFX system.
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* You can copy, modify and distribute this file as you see fit.
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* You do not need to publish your source modifications to this file.
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* The only thing you are not permitted to do is to relicense it
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* under a different license.
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*/
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#ifndef _GFXCONF_H
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#define _GFXCONF_H
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/* GFX sub-systems to turn on */
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#define GFX_USE_GDISP TRUE
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#define GFX_USE_GWIN FALSE
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#define GFX_USE_GEVENT FALSE
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#define GFX_USE_GTIMER FALSE
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#define GFX_USE_GINPUT FALSE
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/* Features for the GDISP sub-system. */
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#define GDISP_NEED_VALIDATION FALSE
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#define GDISP_NEED_CLIP FALSE
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#define GDISP_NEED_TEXT FALSE
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#define GDISP_NEED_CIRCLE TRUE
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#define GDISP_NEED_ELLIPSE FALSE
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#define GDISP_NEED_ARC FALSE
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#define GDISP_NEED_SCROLL FALSE
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#define GDISP_NEED_PIXELREAD FALSE
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#define GDISP_NEED_CONTROL FALSE
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#define GDISP_NEED_MULTITHREAD FALSE
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#define GDISP_NEED_ASYNC FALSE
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#define GDISP_NEED_MSGAPI FALSE
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/* Builtin Fonts */
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#define GDISP_INCLUDE_FONT_SMALL FALSE
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#define GDISP_INCLUDE_FONT_LARGER FALSE
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#define GDISP_INCLUDE_FONT_UI1 FALSE
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#define GDISP_INCLUDE_FONT_UI2 FALSE
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#define GDISP_INCLUDE_FONT_LARGENUMBERS FALSE
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#endif /* _GFXCONF_H */
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/* Microcontroller graphic demo by Pascal Piazzalunga
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* admin@serveurperso.com http://www.serveurperso.com
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* https://www.youtube.com/watch?v=wyuJ-dqS2to
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* Ported to stm32/ChibiOS/glx by Chris Baird.
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* It's spinnin' bubbles, man.
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* --
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* Licencing? Ask Pascal. Let's assume it is freely-distributable and
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* modifiable, provided his name is kept in the source.
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* --
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* Chris Baird,, <cjb@brushtail.apana.org.au> April 2013
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*/
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#include <math.h>
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#include "ch.h"
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#include "hal.h"
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#include "gfx.h"
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/* ---------------------------------------------------------------------- */
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#define N 1024 /* Number of dots */
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#define SCALE 8192
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#define INCREMENT 512 /* INCREMENT = SCALE / sqrt(N) * 2 */
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#define PI2 6.283185307179586476925286766559
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#define background RGB2COLOR(0,0,0)
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uint16_t width, height;
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int16_t sine[SCALE+(SCALE/4)];
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int16_t *cosi = &sine[SCALE/4]; /* cos(x) = sin(x+90d)... */
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void initialize (void)
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{
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uint16_t i;
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/* if you change the SCALE*1.25 back to SCALE, the program will
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* occassionally overrun the cosi array -- however this actually
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* produces some interesting effects as the BUBBLES LOSE CONTROL!!!!
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*/
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for (i = 0; i < SCALE+(SCALE/4); i++)
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//sine[i] = (-SCALE/2) + (int)(sinf(PI2 * i / SCALE) * sinf(PI2 * i / SCALE) * SCALE);
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sine[i] = (int)(sinf(PI2 * i / SCALE) * SCALE);
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}
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void matrix (int16_t xyz[3][N], color_t col[N])
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{
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static uint32_t t = 0;
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int16_t x = -SCALE, y = -SCALE;
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uint16_t i, s, d;
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uint8_t red,grn,blu;
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#define RED_COLORS (32)
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#define GREEN_COLORS (64)
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#define BLUE_COLORS (32)
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for (i = 0; i < N; i++)
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{
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xyz[0][i] = x;
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xyz[1][i] = y;
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d = sqrtf(x * x + y * y); /* originally a fastsqrt() call */
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s = sine[(t * 30) % SCALE] + SCALE;
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xyz[2][i] = sine[(d + s) % SCALE] * sine[(t * 10) % SCALE] / SCALE / 2;
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red = (cosi[xyz[2][i] + SCALE / 2] + SCALE) *
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(RED_COLORS - 1) / SCALE / 2;
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grn = (cosi[(xyz[2][i] + SCALE / 2 + 2 * SCALE / 3) % SCALE] + SCALE) *
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(GREEN_COLORS - 1) / SCALE / 2;
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blu = (cosi[(xyz[2][i] + SCALE / 2 + SCALE / 3) % SCALE] + SCALE) *
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(BLUE_COLORS - 1) / SCALE / 2;
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col[i] = ((red << 11) + (grn << 5) + blu);
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x += INCREMENT;
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if (x >= SCALE) x = -SCALE, y += INCREMENT;
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}
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t++;
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}
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void rotate (int16_t xyz[3][N], uint16_t angleX, uint16_t angleY, uint16_t angleZ)
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{
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uint16_t i;
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int16_t tmpX, tmpY;
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int16_t sinx = sine[angleX], cosx = cosi[angleX];
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int16_t siny = sine[angleY], cosy = cosi[angleY];
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int16_t sinz = sine[angleZ], cosz = cosi[angleZ];
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for (i = 0; i < N; i++)
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{
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tmpX = (xyz[0][i] * cosx - xyz[2][i] * sinx) / SCALE;
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xyz[2][i] = (xyz[0][i] * sinx + xyz[2][i] * cosx) / SCALE;
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xyz[0][i] = tmpX;
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tmpY = (xyz[1][i] * cosy - xyz[2][i] * siny) / SCALE;
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xyz[2][i] = (xyz[1][i] * siny + xyz[2][i] * cosy) / SCALE;
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xyz[1][i] = tmpY;
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tmpX = (xyz[0][i] * cosz - xyz[1][i] * sinz) / SCALE;
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xyz[1][i] = (xyz[0][i] * sinz + xyz[1][i] * cosz) / SCALE;
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xyz[0][i] = tmpX;
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}
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}
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void draw(int16_t xyz[3][N], color_t col[N])
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{
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static uint16_t oldProjX[N] = {0};
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static uint16_t oldProjY[N] = {0};
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static uint8_t oldDotSize[N] = {0};
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uint16_t i, projX, projY, projZ, dotSize;
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for (i = 0; i < N; i++)
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{
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projZ = SCALE - (xyz[2][i] + SCALE) / 4;
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projX = width / 2 + (xyz[0][i] * projZ / SCALE) / 25;
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projY = height / 2 + (xyz[1][i] * projZ / SCALE) / 25;
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dotSize = 3 - (xyz[2][i] + SCALE) * 2 / SCALE;
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gdispDrawCircle (oldProjX[i], oldProjY[i], oldDotSize[i], background);
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if (projX > dotSize &&
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projY > dotSize &&
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projX < width - dotSize &&
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projY < height - dotSize)
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{
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gdispDrawCircle (projX, projY, dotSize, col[i]);
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oldProjX[i] = projX;
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oldProjY[i] = projY;
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oldDotSize[i] = dotSize;
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}
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}
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}
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/* ---------------------------------------------------------------------- */
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int16_t angleX = 0, angleY = 0, angleZ = 0;
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int16_t speedX = 0, speedY = 0, speedZ = 0;
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int16_t xyz[3][N];
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color_t col[N];
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int main (void)
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{
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int pass = 0;
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halInit();
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chSysInit();
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gdispInit();
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chThdSleepMilliseconds (10);
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gdispClear (background); /* glitches.. */
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chThdSleepMilliseconds (10);
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gdispClear (background); /* glitches.. */
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chThdSleepMilliseconds (10);
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gdispClear (background); /* glitches.. */
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width = (uint16_t)gdispGetWidth();
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height = (uint16_t)gdispGetHeight();
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initialize();
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for (;;)
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{
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matrix(xyz, col);
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rotate(xyz, angleX, angleY, angleZ);
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draw(xyz, col);
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angleX += speedX;
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angleY += speedY;
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angleZ += speedZ;
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if (pass > 400) speedY = 1;
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if (pass > 800) speedX = 1;
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if (pass > 1200) speedZ = 1;
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pass++;
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if (angleX >= SCALE) angleX -= SCALE;
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else if (angleX < 0) angleX += SCALE;
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if (angleY >= SCALE) angleY -= SCALE;
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else if (angleY < 0) angleY += SCALE;
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if (angleZ >= SCALE) angleZ -= SCALE;
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else if (angleZ < 0) angleZ += SCALE;
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}
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}
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/* ---------------------------------------------------------------------- */
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@ -0,0 +1,10 @@
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In this directory, you can find different demos showing how to use ChibiOS/GFX.
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The demos in these directories are contributions from users of the ChibiOS/GFX
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project and come from different sources. Therefore, the source files of these
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demos come with different licenses which can be found on top of the cor-
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responding files.
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Since these files are not part of the ChibiOS/GFX project, no support for these
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demos is provided. And as with all software which can be found in the /demos
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directory, use on your own risk. There's no warranty of the correctness
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and function of the demos provided.
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