Diff: Controller.cpp

Revision:

23:34da21dfdfd6

Parent:

22:2f5a009a82a6

Child:

24:7b149f5d4bef

diff -r 2f5a009a82a6 -r 34da21dfdfd6 Controller.cpp
--- a/Controller.cpp	Wed Apr 12 23:47:06 2017 +0000
+++ b/Controller.cpp	Sat Apr 15 15:39:47 2017 +0000
@@ -149,51 +149,6 @@
     }
 }
 
-// this method gets the magnitude of the joystick movement
-float Controller::get_mag()
-{
-    Polar p = get_polar();
-    return p.mag;
-}
-
-// this method gets the angle of joystick movement (0 to 360, 0 North)
-float Controller::get_angle()
-{
-    Polar p = get_polar();
-    return p.angle;
-}
-
-Direction Controller::get_direction()
-{
-    float angle = get_angle();  // 0 to 360, -1 for centred
-
-    Direction d;
-    // partition 360 into segments and check which segment the angle is in
-    if (angle < 0.0f) {
-        d = CENTRE;   // check for -1.0 angle
-    } else if (angle < 22.5f) {  // then keep going in 45 degree increments
-        d = N;
-    } else if (angle < 67.5f) {
-        d = NE;
-    } else if (angle < 112.5f) {
-        d = E;
-    } else if (angle < 157.5f) {
-        d = SE;
-    } else if (angle < 202.5f) {
-        d = S;
-    } else if (angle < 247.5f) {
-        d = SW;
-    } else if (angle < 292.5f) {
-        d = W;
-    } else if (angle < 337.5f) {
-        d = NW;
-    } else {
-        d = N;
-    }
-
-    return d;
-}
-
 ///////////////////// private methods ////////////////////////
 
 void Controller::tone_off()
@@ -267,78 +222,6 @@
     _event_state.set(JOY_PRESSED);
 }
 
-// get raw joystick coordinate in range -1 to 1
-// Direction (x,y)
-// North     (0,1)
-// East      (1,0)
-// South     (0,-1)
-// West      (-1,0)
-Vector2D Controller::get_coord()
-{
-    // read() returns value in range 0.0 to 1.0 so is scaled and centre value
-    // substracted to get values in the range -1.0 to 1.0
-    float x = 2.0f*( _horiz->read() - _x0 );
-    float y = 2.0f*( _vert->read()  - _y0 );
-
-    // Note: the x value here is inverted to ensure the positive x is to the
-    // right. This is simply due to how the potentiometer on the joystick
-    // I was using was connected up. It could have been corrected in hardware
-    // by swapping the power supply pins. Instead it is done in software so may
-    // need to be changed depending on your wiring setup
-
-    Vector2D coord = {-x,y};
-    return coord;
-}
-
-// This maps the raw x,y coord onto a circular grid.
-// See:  http://mathproofs.blogspot.co.uk/2005/07/mapping-square-to-circle.html
-Vector2D Controller::get_mapped_coord()
-{
-    Vector2D coord = get_coord();
-
-    // do the transformation
-    float x = coord.x*sqrt(1.0f-pow(coord.y,2.0f)/2.0f);
-    float y = coord.y*sqrt(1.0f-pow(coord.x,2.0f)/2.0f);
-
-    Vector2D mapped_coord = {x,y};
-    return mapped_coord;
-}
-
-// this function converts the mapped coordinates into polar form
-Polar Controller::get_polar()
-{
-    // get the mapped coordinate
-    Vector2D coord = get_mapped_coord();
-
-    // at this point, 0 degrees (i.e. x-axis) will be defined to the East.
-    // We want 0 degrees to correspond to North and increase clockwise to 359
-    // like a compass heading, so we need to swap the axis and invert y
-    float x = coord.y;
-    float y = coord.x;
-
-    float mag = sqrt(x*x+y*y);  // pythagoras
-    float angle = RAD2DEG*atan2(y,x);
-    // angle will be in range -180 to 180, so add 360 to negative angles to
-    // move to 0 to 360 range
-    if (angle < 0.0f) {
-        angle+=360.0f;
-    }
-
-    // the noise on the ADC causes the values of x and y to fluctuate slightly
-    // around the centred values. This causes the random angle values to get
-    // calculated when the joystick is centred and untouched. This is also when
-    // the magnitude is very small, so we can check for a small magnitude and then
-    // set the angle to -1. This will inform us when the angle is invalid and the
-    // joystick is centred
-
-    if (mag < TOL) {
-        mag = 0.0f;
-        angle = -1.0f;
-    }
-
-    Polar p = {mag,angle};
-    return p;
-}
 int Controller::check_for_buttons() {
     if (check_event(A_PRESSED)) { 
         return 1;  }