Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
This commit is contained in:
Jim Grandpre
parent
c26da073d3
commit
68b3cfb42f
2 changed files with 186 additions and 334 deletions
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@ -27,11 +27,12 @@
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#include "SDL_gesture_c.h"
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//TODO: Replace with malloc
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#define MAXFINGERS 5
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#define MAXTOUCHES 2
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#define MAXTEMPLATES 4
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#define MAXPATHSIZE 1024
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#define DOLLARNPOINTS 64
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#define DOLLARSIZE 256
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@ -42,55 +43,38 @@
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typedef struct {
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float x,y;
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} Point;
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typedef struct {
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Point p;
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float pressure;
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SDL_FingerID id;
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} Finger;
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} SDL_FloatPoint;
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typedef struct {
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float length;
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int numPoints;
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Point p[MAXPATHSIZE];
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} DollarPath;
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SDL_FloatPoint p[MAXPATHSIZE];
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} SDL_DollarPath;
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/*
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typedef struct {
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Finger f;
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Point cv;
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float dtheta,dDist;
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DollarPath dollarPath;
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} TouchPoint;
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*/
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typedef struct {
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Point path[DOLLARNPOINTS];
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SDL_FloatPoint path[DOLLARNPOINTS];
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unsigned long hash;
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} DollarTemplate;
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} SDL_DollarTemplate;
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typedef struct {
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SDL_GestureID id;
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Point res;
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Point centroid;
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//TouchPoint gestureLast[MAXFINGERS];
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DollarPath dollarPath;
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SDL_FloatPoint res;
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SDL_FloatPoint centroid;
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SDL_DollarPath dollarPath;
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Uint16 numDownFingers;
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int numDollarTemplates;
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DollarTemplate dollarTemplate[MAXTEMPLATES];
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SDL_DollarTemplate *dollarTemplate;
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SDL_bool recording;
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} GestureTouch;
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} SDL_GestureTouch;
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GestureTouch gestureTouch[MAXTOUCHES];
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int numGestureTouches = 0;
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SDL_GestureTouch *SDL_gestureTouch;
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int SDL_numGestureTouches = 0;
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SDL_bool recordAll;
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void SDL_PrintPath(Point *path) {
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void SDL_PrintPath(SDL_FloatPoint *path) {
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int i;
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printf("Path:");
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for(i=0;i<DOLLARNPOINTS;i++) {
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@ -102,9 +86,9 @@ void SDL_PrintPath(Point *path) {
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int SDL_RecordGesture(SDL_TouchID touchId) {
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int i;
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if(touchId < 0) recordAll = SDL_TRUE;
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for(i = 0;i < numGestureTouches; i++) {
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if((touchId < 0) || (gestureTouch[i].id == touchId)) {
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gestureTouch[i].recording = SDL_TRUE;
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for(i = 0;i < SDL_numGestureTouches; i++) {
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if((touchId < 0) || (SDL_gestureTouch[i].id == touchId)) {
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SDL_gestureTouch[i].recording = SDL_TRUE;
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if(touchId >= 0)
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return 1;
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}
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@ -112,7 +96,7 @@ int SDL_RecordGesture(SDL_TouchID touchId) {
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return (touchId < 0);
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}
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unsigned long SDL_HashDollar(Point* points) {
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unsigned long SDL_HashDollar(SDL_FloatPoint* points) {
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unsigned long hash = 5381;
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int i;
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for(i = 0;i < DOLLARNPOINTS; i++) {
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@ -123,14 +107,14 @@ unsigned long SDL_HashDollar(Point* points) {
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}
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static int SaveTemplate(DollarTemplate *templ, SDL_RWops * src) {
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static int SaveTemplate(SDL_DollarTemplate *templ, SDL_RWops * src) {
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if(src == NULL) return 0;
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int i;
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//No Longer storing the Hash, rehash on load
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//if(SDL_RWops.write(src,&(templ->hash),sizeof(templ->hash),1) != 1) return 0;
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if(SDL_RWwrite(src,templ->path,
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sizeof(templ->path[0]),DOLLARNPOINTS) != DOLLARNPOINTS)
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return 0;
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@ -141,8 +125,8 @@ static int SaveTemplate(DollarTemplate *templ, SDL_RWops * src) {
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int SDL_SaveAllDollarTemplates(SDL_RWops *src) {
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int i,j,rtrn = 0;
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for(i = 0; i < numGestureTouches; i++) {
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GestureTouch* touch = &gestureTouch[i];
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for(i = 0; i < SDL_numGestureTouches; i++) {
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SDL_GestureTouch* touch = &SDL_gestureTouch[i];
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for(j = 0;j < touch->numDollarTemplates; j++) {
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rtrn += SaveTemplate(&touch->dollarTemplate[i],src);
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}
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@ -152,8 +136,8 @@ int SDL_SaveAllDollarTemplates(SDL_RWops *src) {
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int SDL_SaveDollarTemplate(SDL_GestureID gestureId, SDL_RWops *src) {
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int i,j;
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for(i = 0; i < numGestureTouches; i++) {
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GestureTouch* touch = &gestureTouch[i];
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for(i = 0; i < SDL_numGestureTouches; i++) {
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SDL_GestureTouch* touch = &SDL_gestureTouch[i];
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for(j = 0;j < touch->numDollarTemplates; j++) {
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if(touch->dollarTemplate[i].hash == gestureId) {
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return SaveTemplate(&touch->dollarTemplate[i],src);
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@ -166,25 +150,46 @@ int SDL_SaveDollarTemplate(SDL_GestureID gestureId, SDL_RWops *src) {
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//path is an already sampled set of points
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//Returns the index of the gesture on success, or -1
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static int SDL_AddDollarGesture(GestureTouch* inTouch,Point* path) {
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static int SDL_AddDollarGesture(SDL_GestureTouch* inTouch,SDL_FloatPoint* path) {
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if(inTouch == NULL) {
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if(numGestureTouches == 0) return -1;
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if(SDL_numGestureTouches == 0) return -1;
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int i = 0;
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for(i = 0;i < numGestureTouches; i++) {
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inTouch = &gestureTouch[i];
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if(inTouch->numDollarTemplates < MAXTEMPLATES) {
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DollarTemplate *templ =
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&inTouch->dollarTemplate[inTouch->numDollarTemplates];
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memcpy(templ->path,path,DOLLARNPOINTS*sizeof(Point));
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templ->hash = SDL_HashDollar(templ->path);
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inTouch->numDollarTemplates++;
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for(i = 0;i < SDL_numGestureTouches; i++) {
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inTouch = &SDL_gestureTouch[i];
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SDL_DollarTemplate* dollarTemplate =
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SDL_realloc(inTouch->dollarTemplate,
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(inTouch->numDollarTemplates + 1) *
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sizeof(SDL_DollarTemplate));
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if(!dollarTemplate) {
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SDL_OutOfMemory();
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return -1;
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}
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inTouch->dollarTemplate = dollarTemplate;
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SDL_DollarTemplate *templ =
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&inTouch->dollarTemplate[inTouch->numDollarTemplates];
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memcpy(templ->path,path,DOLLARNPOINTS*sizeof(SDL_FloatPoint));
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templ->hash = SDL_HashDollar(templ->path);
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inTouch->numDollarTemplates++;
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}
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return inTouch->numDollarTemplates - 1;
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}else if(inTouch->numDollarTemplates < MAXTEMPLATES) {
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DollarTemplate *templ =
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} else {
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SDL_DollarTemplate* dollarTemplate =
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SDL_realloc(inTouch->dollarTemplate,
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(inTouch->numDollarTemplates + 1) *
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sizeof(SDL_DollarTemplate));
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if(!dollarTemplate) {
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SDL_OutOfMemory();
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return -1;
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}
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inTouch->dollarTemplate = dollarTemplate;
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SDL_DollarTemplate *templ =
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&inTouch->dollarTemplate[inTouch->numDollarTemplates];
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memcpy(templ->path,path,DOLLARNPOINTS*sizeof(Point));
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memcpy(templ->path,path,DOLLARNPOINTS*sizeof(SDL_FloatPoint));
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templ->hash = SDL_HashDollar(templ->path);
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inTouch->numDollarTemplates++;
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return inTouch->numDollarTemplates - 1;
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@ -195,36 +200,28 @@ static int SDL_AddDollarGesture(GestureTouch* inTouch,Point* path) {
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int SDL_LoadDollarTemplates(SDL_TouchID touchId, SDL_RWops *src) {
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if(src == NULL) return 0;
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int i,loaded = 0;
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GestureTouch *touch = NULL;
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SDL_GestureTouch *touch = NULL;
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if(touchId >= 0) {
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for(i = 0;i < numGestureTouches; i++)
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if(gestureTouch[i].id == touchId)
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touch = &gestureTouch[i];
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for(i = 0;i < SDL_numGestureTouches; i++)
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if(SDL_gestureTouch[i].id == touchId)
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touch = &SDL_gestureTouch[i];
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if(touch == NULL) return -1;
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}
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while(1) {
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DollarTemplate templ;
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//fscanf(fp,"%lu ",&templ.hash);
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/*
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for(i = 0;i < DOLLARNPOINTS; i++) {
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int x,y;
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if(fscanf(fp,"%i %i ",&x,&y) != 2) break;
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templ.path[i].x = x;
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templ.path[i].y = y;
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}
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fscanf(fp,"\n");
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*/
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if(SDL_RWread(src,templ.path,sizeof(templ.path[0]),DOLLARNPOINTS) < DOLLARNPOINTS) break;
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SDL_DollarTemplate templ;
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if(SDL_RWread(src,templ.path,sizeof(templ.path[0]),DOLLARNPOINTS) <
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DOLLARNPOINTS) break;
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if(touchId >= 0) {
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printf("Adding loaded gesture to 1 touch\n");
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if(SDL_AddDollarGesture(touch,templ.path)) loaded++;
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}
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else {
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printf("Adding to: %i touches\n",numGestureTouches);
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for(i = 0;i < numGestureTouches; i++) {
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touch = &gestureTouch[i];
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printf("Adding to: %i touches\n",SDL_numGestureTouches);
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for(i = 0;i < SDL_numGestureTouches; i++) {
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touch = &SDL_gestureTouch[i];
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printf("Adding loaded gesture to + touches\n");
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//TODO: What if this fails?
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SDL_AddDollarGesture(touch,templ.path);
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@ -237,10 +234,10 @@ int SDL_LoadDollarTemplates(SDL_TouchID touchId, SDL_RWops *src) {
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}
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float dollarDifference(Point* points,Point* templ,float ang) {
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// Point p[DOLLARNPOINTS];
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float dollarDifference(SDL_FloatPoint* points,SDL_FloatPoint* templ,float ang) {
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// SDL_FloatPoint p[DOLLARNPOINTS];
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float dist = 0;
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Point p;
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SDL_FloatPoint p;
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int i;
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for(i = 0; i < DOLLARNPOINTS; i++) {
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p.x = points[i].x * cos(ang) - points[i].y * sin(ang);
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@ -252,7 +249,7 @@ float dollarDifference(Point* points,Point* templ,float ang) {
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}
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float bestDollarDifference(Point* points,Point* templ) {
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float bestDollarDifference(SDL_FloatPoint* points,SDL_FloatPoint* templ) {
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//------------BEGIN DOLLAR BLACKBOX----------------//
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//-TRANSLATED DIRECTLY FROM PSUDEO-CODE AVAILABLE AT-//
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//-"http://depts.washington.edu/aimgroup/proj/dollar/"-//
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@ -289,10 +286,9 @@ float bestDollarDifference(Point* points,Point* templ) {
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}
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//DollarPath contains raw points, plus (possibly) the calculated length
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int dollarNormalize(DollarPath path,Point *points) {
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int dollarNormalize(SDL_DollarPath path,SDL_FloatPoint *points) {
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int i;
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//Calculate length if it hasn't already been done
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printf("length: %f\n",path.length);
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if(path.length <= 0) {
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for(i=1;i<path.numPoints;i++) {
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float dx = path.p[i ].x -
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@ -302,14 +298,13 @@ int dollarNormalize(DollarPath path,Point *points) {
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path.length += sqrt(dx*dx+dy*dy);
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}
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}
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printf("New length: %f\n",path.length);
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//Resample
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float interval = path.length/(DOLLARNPOINTS - 1);
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float dist = interval;
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int numPoints = 0;
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Point centroid;
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SDL_FloatPoint centroid;
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centroid.x = 0;centroid.y = 0;
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//printf("(%f,%f)\n",path.p[path.numPoints-1].x,path.p[path.numPoints-1].y);
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@ -378,9 +373,9 @@ int dollarNormalize(DollarPath path,Point *points) {
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return numPoints;
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}
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float dollarRecognize(DollarPath path,int *bestTempl,GestureTouch* touch) {
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float dollarRecognize(SDL_DollarPath path,int *bestTempl,SDL_GestureTouch* touch) {
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Point points[DOLLARNPOINTS];
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SDL_FloatPoint points[DOLLARNPOINTS];
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int numPoints = dollarNormalize(path,points);
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//SDL_PrintPath(points);
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int i;
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@ -394,34 +389,56 @@ float dollarRecognize(DollarPath path,int *bestTempl,GestureTouch* touch) {
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return bestDiff;
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}
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int SDL_GestureAddTouch(SDL_Touch* touch) {
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if(numGestureTouches >= MAXTOUCHES) return -1;
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gestureTouch[numGestureTouches].res.x = touch->xres;
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gestureTouch[numGestureTouches].res.y = touch->yres;
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gestureTouch[numGestureTouches].numDownFingers = 0;
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int SDL_GestureAddTouch(SDL_Touch* touch) {
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SDL_GestureTouch *gestureTouch = SDL_realloc(SDL_gestureTouch,
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(SDL_numGestureTouches + 1) *
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sizeof(SDL_GestureTouch));
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gestureTouch[numGestureTouches].res.x = touch->xres;
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gestureTouch[numGestureTouches].id = touch->id;
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if(!gestureTouch) {
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SDL_OutOfMemory();
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return -1;
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}
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gestureTouch[numGestureTouches].numDollarTemplates = 0;
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SDL_gestureTouch = gestureTouch;
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gestureTouch[numGestureTouches].recording = SDL_FALSE;
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SDL_gestureTouch[SDL_numGestureTouches].res.x = touch->xres;
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SDL_gestureTouch[SDL_numGestureTouches].res.y = touch->yres;
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SDL_gestureTouch[SDL_numGestureTouches].numDownFingers = 0;
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numGestureTouches++;
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SDL_gestureTouch[SDL_numGestureTouches].res.x = touch->xres;
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SDL_gestureTouch[SDL_numGestureTouches].id = touch->id;
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SDL_gestureTouch[SDL_numGestureTouches].numDollarTemplates = 0;
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SDL_gestureTouch[SDL_numGestureTouches].recording = SDL_FALSE;
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SDL_numGestureTouches++;
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return 0;
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}
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GestureTouch * SDL_GetGestureTouch(SDL_TouchID id) {
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int SDL_GestureRemoveTouch(SDL_TouchID id) {
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int i;
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for(i = 0;i < numGestureTouches; i++) {
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//printf("%i ?= %i\n",gestureTouch[i].id,id);
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if(gestureTouch[i].id == id) return &gestureTouch[i];
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for(i = 0;i < SDL_numGestureTouches; i++) {
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if(SDL_gestureTouch[i].id == id) {
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SDL_numGestureTouches--;
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SDL_gestureTouch[i] = SDL_gestureTouch[SDL_numGestureTouches];
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return 1;
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}
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}
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return -1;
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}
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SDL_GestureTouch * SDL_GetGestureTouch(SDL_TouchID id) {
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int i;
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for(i = 0;i < SDL_numGestureTouches; i++) {
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//printf("%i ?= %i\n",SDL_gestureTouch[i].id,id);
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if(SDL_gestureTouch[i].id == id) return &SDL_gestureTouch[i];
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}
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return NULL;
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}
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int SDL_SendGestureMulti(GestureTouch* touch,float dTheta,float dDist) {
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int SDL_SendGestureMulti(SDL_GestureTouch* touch,float dTheta,float dDist) {
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SDL_Event event;
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event.mgesture.type = SDL_MULTIGESTURE;
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event.mgesture.touchId = touch->id;
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@ -433,7 +450,7 @@ int SDL_SendGestureMulti(GestureTouch* touch,float dTheta,float dDist) {
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return SDL_PushEvent(&event) > 0;
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}
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int SDL_SendGestureDollar(GestureTouch* touch,
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int SDL_SendGestureDollar(SDL_GestureTouch* touch,
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SDL_GestureID gestureId,float error) {
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SDL_Event event;
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event.dgesture.type = SDL_DOLLARGESTURE;
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@ -449,7 +466,7 @@ int SDL_SendGestureDollar(GestureTouch* touch,
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}
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int SDL_SendDollarRecord(GestureTouch* touch,SDL_GestureID gestureId) {
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int SDL_SendDollarRecord(SDL_GestureTouch* touch,SDL_GestureID gestureId) {
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SDL_Event event;
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event.dgesture.type = SDL_DOLLARRECORD;
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event.dgesture.touchId = touch->id;
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@ -464,7 +481,7 @@ void SDL_GestureProcessEvent(SDL_Event* event)
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if(event->type == SDL_FINGERMOTION ||
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event->type == SDL_FINGERDOWN ||
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event->type == SDL_FINGERUP) {
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GestureTouch* inTouch = SDL_GetGestureTouch(event->tfinger.touchId);
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SDL_GestureTouch* inTouch = SDL_GetGestureTouch(event->tfinger.touchId);
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//Shouldn't be possible
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if(inTouch == NULL) return;
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@ -485,15 +502,15 @@ void SDL_GestureProcessEvent(SDL_Event* event)
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#ifdef ENABLE_DOLLAR
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if(inTouch->recording) {
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inTouch->recording = SDL_FALSE;
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Point path[DOLLARNPOINTS];
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SDL_FloatPoint path[DOLLARNPOINTS];
|
||||
dollarNormalize(inTouch->dollarPath,path);
|
||||
//SDL_PrintPath(path);
|
||||
int index;
|
||||
if(recordAll) {
|
||||
index = SDL_AddDollarGesture(NULL,path);
|
||||
int i;
|
||||
for(i = 0;i < numGestureTouches; i++)
|
||||
gestureTouch[i].recording = SDL_FALSE;
|
||||
for(i = 0;i < SDL_numGestureTouches; i++)
|
||||
SDL_gestureTouch[i].recording = SDL_FALSE;
|
||||
}
|
||||
else {
|
||||
index = SDL_AddDollarGesture(inTouch,path);
|
||||
|
|
@ -532,7 +549,7 @@ void SDL_GestureProcessEvent(SDL_Event* event)
|
|||
float dy = ((float)event->tfinger.dy)/(float)inTouch->res.y;
|
||||
//printf("dx,dy: (%f,%f)\n",dx,dy);
|
||||
#ifdef ENABLE_DOLLAR
|
||||
DollarPath* path = &inTouch->dollarPath;
|
||||
SDL_DollarPath* path = &inTouch->dollarPath;
|
||||
if(path->numPoints < MAXPATHSIZE) {
|
||||
path->p[path->numPoints].x = inTouch->centroid.x;
|
||||
path->p[path->numPoints].y = inTouch->centroid.y;
|
||||
|
|
@ -544,18 +561,18 @@ void SDL_GestureProcessEvent(SDL_Event* event)
|
|||
path->numPoints++;
|
||||
}
|
||||
#endif
|
||||
Point lastP;
|
||||
SDL_FloatPoint lastP;
|
||||
lastP.x = x - dx;
|
||||
lastP.y = y - dy;
|
||||
Point lastCentroid;
|
||||
SDL_FloatPoint lastCentroid;
|
||||
lastCentroid = inTouch->centroid;
|
||||
|
||||
inTouch->centroid.x += dx/inTouch->numDownFingers;
|
||||
inTouch->centroid.y += dy/inTouch->numDownFingers;
|
||||
//printf("Centrid : (%f,%f)\n",inTouch->centroid.x,inTouch->centroid.y);
|
||||
if(inTouch->numDownFingers > 1) {
|
||||
Point lv; //Vector from centroid to last x,y position
|
||||
Point v; //Vector from centroid to current x,y position
|
||||
SDL_FloatPoint lv; //Vector from centroid to last x,y position
|
||||
SDL_FloatPoint v; //Vector from centroid to current x,y position
|
||||
//lv = inTouch->gestureLast[j].cv;
|
||||
lv.x = lastP.x - lastCentroid.x;
|
||||
lv.y = lastP.y - lastCentroid.y;
|
||||
|
|
@ -608,15 +625,9 @@ void SDL_GestureProcessEvent(SDL_Event* event)
|
|||
x)/inTouch->numDownFingers;
|
||||
inTouch->centroid.y = (inTouch->centroid.y*(inTouch->numDownFingers - 1)+
|
||||
y)/inTouch->numDownFingers;
|
||||
printf("Finger Down: (%f,%f). Centroid: (%f,%f\n",x,y,
|
||||
inTouch->centroid.x,inTouch->centroid.y);
|
||||
/*
|
||||
inTouch->gestureLast[j].f.id = event->tfinger.fingerId;
|
||||
inTouch->gestureLast[j].f.p.x = x;
|
||||
inTouch->gestureLast[j].f.p.y = y;
|
||||
inTouch->gestureLast[j].cv.x = 0;
|
||||
inTouch->gestureLast[j].cv.y = 0;
|
||||
*/
|
||||
//printf("Finger Down: (%f,%f). Centroid: (%f,%f\n",x,y,
|
||||
// inTouch->centroid.x,inTouch->centroid.y);
|
||||
|
||||
#ifdef ENABLE_DOLLAR
|
||||
inTouch->dollarPath.length = 0;
|
||||
inTouch->dollarPath.p[0].x = x;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue