miguel.horta/commandergenius
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

New multitouch API for SDL 1.2

Browse Source
This commit is contained in:
pelya
2012-02-08 15:16:26 +02:00
parent ea9f7b604e
commit 9f88a78519
7 changed files with 318 additions and 264 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
project/jni/application/testmultitouch/example.cpp
View File

@@ -1,4 +1,3 @@
#include <android/log.h>
#include "SDL.h"
@@ -8,16 +7,16 @@ int main(int argc, char* argv[])
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_JOYSTICK);
SDL_Surface * screen = SDL_SetVideoMode(640, 480, 16, 0);
enum { MAX_POINTERS = 16, PTR_PRESSED = 4 };
int touchPointers[MAX_POINTERS][5];
int accel[5];
enum { MAX_POINTERS = 16 };
// some random colors
int colors[MAX_POINTERS] = { 0xaaaaaa, 0xffffff, 0x888888, 0xcccccc, 0x666666, 0x999999, 0xdddddd, 0xeeeeee, 0xaaaaaa, 0xffffff, 0x888888, 0xcccccc, 0x666666, 0x999999, 0xdddddd, 0xeeeeee };
struct TouchPointer_t { int x; int y; int pressure; int pressed; } touchPointers[MAX_POINTERS];
int accel[3]; // Only first 2 coords are used
int i;
memset(touchPointers, 0, sizeof(touchPointers));
memset(accel, 0, sizeof(accel));
SDL_Joystick * joysticks[MAX_POINTERS+1];
for(i=0; i<MAX_POINTERS; i++)
joysticks[i] = SDL_JoystickOpen(i);
SDL_Joystick * joystick = SDL_JoystickOpen(i);
while(1)
{
@@ -26,20 +25,24 @@ int main(int argc, char* argv[])
{
if( evt.type == SDL_JOYAXISMOTION )
{
if( evt.jaxis.which == 0 ) // 0 = The accelerometer
if(evt.jaxis.axis < 3)
accel[evt.jaxis.axis] = evt.jaxis.value; // Those events are spammy, don't log them
else
{
accel[evt.jaxis.axis] = evt.jaxis.value;
continue;
__android_log_print(ANDROID_LOG_INFO, "Multitouch", "SDL_JOYAXISMOTION %d value %06d", (int)evt.jaxis.axis, (int)evt.jaxis.value );
touchPointers[evt.jaxis.axis-3].pressure = evt.jaxis.value;
}
int joyid = evt.jaxis.which - 1;
touchPointers[joyid][evt.jaxis.axis] = evt.jaxis.value; // Axis 0 and 1 are coordinates, 2 and 3 are pressure and touch point radius
}
if( evt.type == SDL_JOYBUTTONDOWN || evt.type == SDL_JOYBUTTONUP )
{
if( evt.jbutton.which == 0 ) // 0 = The accelerometer
continue;
int joyid = evt.jbutton.which - 1;
touchPointers[joyid][PTR_PRESSED] = (evt.jbutton.state == SDL_PRESSED);
__android_log_print(ANDROID_LOG_INFO, "Multitouch", "SDL_JOYBUTTON %d value %d", (int)evt.jbutton.button, (int)evt.jbutton.state );
touchPointers[evt.jbutton.button].pressed = (evt.jbutton.state == SDL_PRESSED);
}
if( evt.type == SDL_JOYBALLMOTION )
{
__android_log_print(ANDROID_LOG_INFO, "Multitouch", "SDL_JOYBALLMOTION %d %06d:%06d", (int)evt.jball.ball, (int)evt.jball.xrel, (int)evt.jball.yrel );
touchPointers[evt.jball.ball].x = evt.jball.xrel;
touchPointers[evt.jball.ball].y = evt.jball.yrel;
}
if(evt.type == SDL_KEYDOWN && evt.key.keysym.sym == SDLK_ESCAPE)
return 0;
@@ -48,24 +51,23 @@ int main(int argc, char* argv[])
SDL_Rect r;
for(i=0; i<MAX_POINTERS; i++)
{
if( !touchPointers[i][PTR_PRESSED] )
if( !touchPointers[i].pressed )
continue;
r.x = touchPointers[i][0];
r.y = touchPointers[i][1];
r.w = 80 + touchPointers[i][2] / 10; // Pressure
r.h = 80 + touchPointers[i][3] / 10; // Touch point size
r.x = touchPointers[i].x;
r.y = touchPointers[i].y;
r.w = 50 + touchPointers[i].pressure / 5;
r.h = 50 + touchPointers[i].pressure / 5;
r.x -= r.w/2;
r.y -= r.h/2;
SDL_FillRect(screen, &r, 0xffffff);
SDL_FillRect(screen, &r, colors[i]);
}
r.x = 320 + accel[0] / 100;
r.y = 240 + accel[1] / 100;
r.w = 10 + abs(accel[2]);
r.w = 10;
r.h = 10;
r.x -= r.w/2;
r.y -= r.h/2;
__android_log_print(ANDROID_LOG_INFO, "Example", "Accelerometer %06d %06d %06d", accel[0], accel[1], accel[2]);
SDL_FillRect(screen, &r, 0xaaaaaa);
SDL_FillRect(screen, &r, 0xffffff);
SDL_Flip(screen);
}
return 0;