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-rw-r--r--Eyes.c138
1 files changed, 65 insertions, 73 deletions
diff --git a/Eyes.c b/Eyes.c
index 70905e8..3fa5b4f 100644
--- a/Eyes.c
+++ b/Eyes.c
@@ -88,14 +88,10 @@ static XtResource resources[] = {
# define EYE_Y(n) (0.0)
# define EYE_OFFSET (0.1) /* padding between eyes */
# define EYE_THICK (0.175) /* thickness of eye rim */
-# define BALL_WIDTH (0.3)
-# define BALL_PAD (0.05)
-# define EYE_WIDTH (2.0 - (EYE_THICK + EYE_OFFSET) * 2)
-# define EYE_HEIGHT EYE_WIDTH
-# define EYE_HWIDTH (EYE_WIDTH / 2.0)
-# define EYE_HHEIGHT (EYE_HEIGHT / 2.0)
-# define BALL_HEIGHT BALL_WIDTH
-# define BALL_DIST ((EYE_WIDTH - BALL_WIDTH) / 2.0 - BALL_PAD)
+# define BALL_DIAM (0.3)
+# define BALL_PAD (0.175)
+# define EYE_DIAM (2.0 - (EYE_THICK + EYE_OFFSET) * 2)
+# define BALL_DIST ((EYE_DIAM - BALL_DIAM) / 2.0 - BALL_PAD)
# define W_MIN_X (-1.0 + EYE_OFFSET)
# define W_MAX_X (3.0 - EYE_OFFSET)
# define W_MIN_Y (-1.0 + EYE_OFFSET)
@@ -203,12 +199,14 @@ static void Initialize (
static void
drawEllipse(EyesWidget w, enum EyesPart part,
- double centerx, double centery, double width, double height)
+ double centerx, double centery,
+ double oldx, double oldy,
+ double diam)
{
const TRectangle tpos = {
- centerx - width/2.0,
- centery - height/2.0,
- width, height };
+ centerx - diam/2.0,
+ centery - diam/2.0,
+ diam, diam };
TRectangle pos;
Trectangle(&w->eyes.t, &tpos, &pos);
@@ -256,6 +254,10 @@ drawEllipse(EyesWidget w, enum EyesPart part,
y = c*py + sy*px;
}
+ if (oldx != TPOINT_NONE || oldy != TPOINT_NONE)
+ drawEllipse(w, PART_CLEAR, oldx, oldy,
+ TPOINT_NONE, TPOINT_NONE, diam);
+
XRenderCompositeDoublePoly(XtDisplay(w), PictOpOver,
w->eyes.fill[part], w->eyes.picture,
XRenderFindStandardFormat(XtDisplay(w),
@@ -266,6 +268,10 @@ drawEllipse(EyesWidget w, enum EyesPart part,
return;
}
#endif
+ if (oldx != TPOINT_NONE || oldy != TPOINT_NONE)
+ drawEllipse(w, PART_CLEAR, oldx, oldy,
+ TPOINT_NONE, TPOINT_NONE, diam);
+
XFillArc(XtDisplay(w),
part == PART_SHAPE ? w->eyes.shape_mask : XtWindow(w),
w->eyes.gc[part],
@@ -282,11 +288,12 @@ eyeLiner(EyesWidget w,
{
drawEllipse(w, draw ? PART_OUTLINE : PART_SHAPE,
EYE_X(num), EYE_Y(num),
- EYE_WIDTH + 2.0*EYE_THICK,
- EYE_HEIGHT + 2.0*EYE_THICK);
+ TPOINT_NONE, TPOINT_NONE,
+ EYE_DIAM + 2.0*EYE_THICK);
if (draw) {
drawEllipse(w, PART_CENTER, EYE_X(num), EYE_Y(num),
- EYE_WIDTH, EYE_HEIGHT);
+ TPOINT_NONE, TPOINT_NONE,
+ EYE_DIAM);
}
}
@@ -297,31 +304,24 @@ static TPoint computePupil (
double cx, cy;
double dist;
double angle;
- double x, y;
- double h;
double dx, dy;
double cosa, sina;
TPoint ret;
- dx = mouse.x - EYE_X(num);
- dy = mouse.y - EYE_Y(num);
- if (dx == 0 && dy == 0) {
- cx = EYE_X(num);
- cy = EYE_Y(num);
- } else {
+ cx = EYE_X(num); dx = mouse.x - cx;
+ cy = EYE_Y(num); dy = mouse.y - cy;
+ if (dx == 0 && dy == 0);
+ else {
angle = atan2 ((double) dy, (double) dx);
cosa = cos (angle);
sina = sin (angle);
- h = hypot (EYE_HHEIGHT * cosa, EYE_HWIDTH * sina);
- x = (EYE_HWIDTH * EYE_HHEIGHT) * cosa / h;
- y = (EYE_HWIDTH * EYE_HHEIGHT) * sina / h;
- dist = BALL_DIST * hypot (x, y);
+ dist = BALL_DIST;
if (dist > hypot ((double) dx, (double) dy)) {
- cx = dx + EYE_X(num);
- cy = dy + EYE_Y(num);
+ cx += dx;
+ cy += dy;
} else {
- cx = dist * cosa + EYE_X(num);
- cy = dist * sina + EYE_Y(num);
+ cx += dist * cosa;
+ cy += dist * sina;
}
}
ret.x = cx;
@@ -340,11 +340,13 @@ static void computePupils (
static void
eyeBall(EyesWidget w,
Boolean draw,
+ TPoint *old,
int num)
{
drawEllipse(w, draw ? PART_PUPIL : PART_CLEAR,
w->eyes.pupil[num].x, w->eyes.pupil[num].y,
- BALL_WIDTH, BALL_HEIGHT);
+ old ? old->x : TPOINT_NONE, old ? old->y : TPOINT_NONE,
+ BALL_DIAM);
}
static void repaint_window (EyesWidget w)
@@ -353,59 +355,49 @@ static void repaint_window (EyesWidget w)
eyeLiner (w, TRUE, 0);
eyeLiner (w, TRUE, 1);
computePupils (w->eyes.mouse, w->eyes.pupil);
- eyeBall (w, TRUE, 0);
- eyeBall (w, TRUE, 1);
+ eyeBall (w, TRUE, NULL, 0);
+ eyeBall (w, TRUE, NULL, 1);
}
}
-static void draw_eye(EyesWidget w, TPoint mouse, int eye1, int eye2)
+static void
+drawEye(EyesWidget w, TPoint newpupil, int num)
{
- TPoint newpupil[2];
XPoint xnewpupil, xpupil;
- if (!TPointEqual (mouse, w->eyes.mouse)) {
- computePupils (mouse, newpupil);
- xpupil.x = Xx(w->eyes.pupil[0].x, w->eyes.pupil[0].y, &w->eyes.t);
- xpupil.y = Xy(w->eyes.pupil[0].x, w->eyes.pupil[0].y, &w->eyes.t);
- xnewpupil.x = Xx(newpupil[0].x, newpupil[0].y, &w->eyes.t);
- xnewpupil.y = Xy(newpupil[0].x, newpupil[0].y, &w->eyes.t);
- if (
+ xpupil.x = Xx(w->eyes.pupil[num].x, w->eyes.pupil[num].y, &w->eyes.t);
+ xpupil.y = Xy(w->eyes.pupil[num].x, w->eyes.pupil[num].y, &w->eyes.t);
+ xnewpupil.x = Xx(newpupil.x, newpupil.y, &w->eyes.t);
+ xnewpupil.y = Xy(newpupil.x, newpupil.y, &w->eyes.t);
+ if (
#ifdef XRENDER
- w->eyes.picture ? !TPointEqual(w->eyes.pupil[0], newpupil[0]) :
+ w->eyes.picture ? !TPointEqual(w->eyes.pupil[num], newpupil) :
#endif
- !XPointEqual (xpupil, xnewpupil)) {
- if (w->eyes.pupil[0].x != TPOINT_NONE ||
- w->eyes.pupil[0].y != TPOINT_NONE)
- eyeBall (w, FALSE, eye1);
- w->eyes.pupil[0] = newpupil[0];
- eyeBall (w, TRUE, eye1);
- }
-
- w->eyes.mouse = mouse;
- w->eyes.update = 0;
+ !XPointEqual(xpupil, xnewpupil)) {
+ TPoint oldpupil = w->eyes.pupil[num];
+ w->eyes.pupil[num] = newpupil;
+ eyeBall (w, TRUE, &oldpupil, num);
+ }
+}
- if (eye1 == eye2)
- return;
+static void
+drawEyes(EyesWidget w, TPoint mouse)
+{
+ TPoint newpupil[2];
+ int num;
- xpupil.x = Xx(w->eyes.pupil[1].x, w->eyes.pupil[1].y, &w->eyes.t);
- xpupil.y = Xy(w->eyes.pupil[1].x, w->eyes.pupil[1].y, &w->eyes.t);
- xnewpupil.x = Xx(newpupil[1].x, newpupil[1].y, &w->eyes.t);
- xnewpupil.y = Xy(newpupil[1].x, newpupil[1].y, &w->eyes.t);
- if (
-#ifdef XRENDER
- w->eyes.picture ? !TPointEqual(w->eyes.pupil[1], newpupil[1]) :
-#endif
- !XPointEqual (xpupil, xnewpupil)) {
- if (w->eyes.pupil[1].x != TPOINT_NONE ||
- w->eyes.pupil[1].y != TPOINT_NONE)
- eyeBall (w, FALSE, eye2);
- w->eyes.pupil[1] = newpupil[1];
- eyeBall (w, TRUE, eye2);
- }
- } else {
+ if (TPointEqual (mouse, w->eyes.mouse)) {
if (delays[w->eyes.update + 1] != 0)
++w->eyes.update;
+ return;
+ }
+ computePupils (mouse, newpupil);
+ for (num = 0; num < 2; num ++) {
+ drawEye(w, newpupil[num], num);
}
+
+ w->eyes.mouse = mouse;
+ w->eyes.update = 0;
}
static void draw_it_core(EyesWidget w)
@@ -423,7 +415,7 @@ static void draw_it_core(EyesWidget w)
mouse.x = Tx(dx, dy, &w->eyes.t);
mouse.y = Ty(dx, dy, &w->eyes.t);
- draw_eye(w, mouse, 0, 1);
+ drawEyes(w, mouse);
}
/* ARGSUSED */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 15:25:09 +0000