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add LOD warnings script

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ZappoMan 2015-03-17 15:47:23 -07:00
parent 1e03335012
commit 37ccd7b9f8
1 changed files with 103 additions and 0 deletions
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103
examples/utilities/LODWarning.js Normal file
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var DISPLAY_WARNING_FOR = 3; // in seconds
var DISTANCE_FROM_CAMERA = 2;
var SHOW_LOD_UP_MESSAGE = false; // By default we only display the LOD message when reducing LOD
var warningIsVisible = false; // initially the warning is hidden
var warningShownAt = 0;
var billboardPosition = Vec3.sum(Camera.getPosition(),
Vec3.multiply(DISTANCE_FROM_CAMERA, Quat.getFront(Camera.getOrientation())));
var warningOverlay = Overlays.addOverlay("text3d", {
position: billboardPosition,
dimensions: { x: 2, y: 1.25 },
width: 2,
height: 1.25,
backgroundColor: { red: 0, green: 0, blue: 0 },
color: { red: 255, green: 255, blue: 255},
topMargin: 0.1,
leftMargin: 0.1,
lineHeight: 0.07,
text: "",
alpha: 0.5,
backgroundAlpha: 0.7,
isFacingAvatar: true,
visible: warningIsVisible,
});
// Handle moving the billboard to remain in front of the camera
var billboardNeedsMoving = false;
Script.update.connect(function() {
if (warningIsVisible) {
var bestBillboardPosition = Vec3.sum(Camera.getPosition(),
Vec3.multiply(DISTANCE_FROM_CAMERA, Quat.getFront(Camera.getOrientation())));
var MAX_DISTANCE = 0.5;
var CLOSE_ENOUGH = 0.01;
if (!billboardNeedsMoving && Vec3.distance(bestBillboardPosition, billboardPosition) > MAX_DISTANCE) {
billboardNeedsMoving = true;
}
if (billboardNeedsMoving && Vec3.distance(bestBillboardPosition, billboardPosition) <= CLOSE_ENOUGH) {
billboardNeedsMoving = false;
}
if (billboardNeedsMoving) {
// slurp the billboard to the best location
moveVector = Vec3.multiply(0.05, Vec3.subtract(bestBillboardPosition, billboardPosition));
billboardPosition = Vec3.sum(billboardPosition, moveVector);
Overlays.editOverlay(warningOverlay, { position: billboardPosition });
}
var now = new Date();
var sinceWarningShown = now - warningShownAt;
if (sinceWarningShown > 1000 * DISPLAY_WARNING_FOR) {
warningIsVisible = false;
Overlays.editOverlay(warningOverlay, { visible: warningIsVisible });
}
}
});
LODManager.LODIncreased.connect(function() {
if (SHOW_LOD_UP_MESSAGE) {
// if the warning wasn't visible, then move it before showing it.
if (!warningIsVisible) {
billboardPosition = Vec3.sum(Camera.getPosition(),
Vec3.multiply(DISTANCE_FROM_CAMERA, Quat.getFront(Camera.getOrientation())));
Overlays.editOverlay(warningOverlay, { position: billboardPosition });
}
warningShownAt = new Date();
warningIsVisible = true;
warningText = "Level of detail has been increased. \n"
+ "You can now see: \n"
+ LODManager.getLODFeedbackText();
Overlays.editOverlay(warningOverlay, { visible: warningIsVisible, text: warningText });
}
});
LODManager.LODDecreased.connect(function() {
// if the warning wasn't visible, then move it before showing it.
if (!warningIsVisible) {
billboardPosition = Vec3.sum(Camera.getPosition(),
Vec3.multiply(DISTANCE_FROM_CAMERA, Quat.getFront(Camera.getOrientation())));
Overlays.editOverlay(warningOverlay, { position: billboardPosition });
}
warningShownAt = new Date();
warningIsVisible = true;
warningText = "\n"
+ "Due to the complexity of the content, the \n"
+ "level of detail has been decreased. \n"
+ "You can now see: \n"
+ LODManager.getLODFeedbackText();
Overlays.editOverlay(warningOverlay, { visible: warningIsVisible, text: warningText });
});
Script.scriptEnding.connect(function() {
Overlays.deleteOverlay(warningOverlay);
});