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Display mini tablet on hand being gazed at if there is a choice

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This commit is contained in:
David Rowe 2018-09-07 19:43:51 +12:00
parent 12454d7ec7
commit f206a8f158
1 changed files with 49 additions and 7 deletions
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56
scripts/system/miniTablet.js
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@ -527,7 +527,10 @@
Vec3.multiplyQbyV(handOrientation, uiPositionAndOrientation.position)));
miniOrientation = Quat.multiply(handOrientation, uiPositionAndOrientation.rotation);
miniToCameraDirection = Vec3.normalize(Vec3.subtract(Camera.position, miniPosition));
return Vec3.dot(miniToCameraDirection, Quat.getForward(miniOrientation)) > MIN_HAND_CAMERA_ANGLE_COS;
return {
show: Vec3.dot(miniToCameraDirection, Quat.getForward(miniOrientation)) > MIN_HAND_CAMERA_ANGLE_COS,
cameraToHand: -Vec3.dot(miniToCameraDirection, Quat.getForward(Camera.orientation))
};
}
function enterMiniHidden() {
@ -535,14 +538,27 @@
}
function updateMiniHidden() {
var showLeft,
showRight;
// Don't show mini tablet if tablet proper is already displayed or in toolbar mode.
if (HMD.showTablet || tablet.toolbarMode) {
return;
}
// Compare palm directions of hands with vectors from palms to camera.
if (shouldShowMini(LEFT_HAND)) {
// Show mini tablet if it would be pointing at the camera.
showLeft = shouldShowMini(LEFT_HAND);
showRight = shouldShowMini(RIGHT_HAND);
if (showLeft.show && showRight.show) {
// Both hands would be pointing at camera; show the one the camera is gazing at.
if (showLeft.cameraToHand > showRight.cameraToHand) {
setState(MINI_SHOWING, LEFT_HAND);
} else {
setState(MINI_SHOWING, RIGHT_HAND);
}
} else if (showLeft.show) {
setState(MINI_SHOWING, LEFT_HAND);
} else if (shouldShowMini(RIGHT_HAND)) {
} else if (showRight.show) {
setState(MINI_SHOWING, RIGHT_HAND);
}
}
@ -609,13 +625,38 @@
}
function updateMiniVisible() {
var showLeft,
showRight;
// Hide mini tablet if tablet proper has been displayed by other means.
if (HMD.showTablet) {
setState(MINI_HIDDEN);
return;
}
// Check that palm direction of mini tablet hand still less than maximum angle.
if (!shouldShowMini(miniHand)) {
// Check that the mini tablet should still be visible and if so then ensure it's on the hand that the camera is
// gazing at.
showLeft = shouldShowMini(LEFT_HAND);
showRight = shouldShowMini(RIGHT_HAND);
if (showLeft.show && showRight.show) {
if (showLeft.cameraToHand > showRight.cameraToHand) {
if (miniHand !== LEFT_HAND) {
setState(MINI_HIDING);
}
} else {
if (miniHand !== RIGHT_HAND) {
setState(MINI_HIDING);
}
}
} else if (showLeft.show) {
if (miniHand !== LEFT_HAND) {
setState(MINI_HIDING);
}
} else if (showRight.show) {
if (miniHand !== RIGHT_HAND) {
setState(MINI_HIDING);
}
} else {
setState(MINI_HIDING);
}
}
@ -728,7 +769,8 @@
function setState(state, data) {
if (state !== miniState) {
debug("State transition from " + STATE_STRINGS[miniState] + " to " + STATE_STRINGS[state]);
debug("State transition from " + STATE_STRINGS[miniState] + " to " + STATE_STRINGS[state]
+ ( data ? " " + JSON.stringify(data) : ""));
if (STATE_MACHINE[STATE_STRINGS[miniState]].exit) {
STATE_MACHINE[STATE_STRINGS[miniState]].exit(data);
}