add rotate support to movable.js

examples/entityScripts/movable.js

@@ -13,6 +13,28 @@
     this.entityID = null;
     this.properties = null;
     this.graboffset = null;
+    this.clickedAt = null;
+    this.firstHolding = true;
+    this.clickedX = -1;
+    this.clickedY = -1;
+    this.rotateOverlayTarget = null;
+    this.rotateOverlayInner = null;
+    this.rotateOverlayOuter = null;
+    this.rotateOverlayCurrent = null;
+    this.rotateMode = false;
+    this.originalRotation = null;
+    
+    var rotateOverlayTargetSize = 10000; // really big target
+    var innerSnapAngle = 22.5; // the angle which we snap to on the inner rotation tool
+    var innerRadius;
+    var outerRadius;
+    var yawCenter;
+    var yawZero;
+    var rotationNormal;
+    var yawNormal;
+    
+    var debug = true;
+
 
     // Pr, Vr are respectively the Ray's Point of origin and Vector director
     // Pp, Np are respectively the Plane's Point of origin and Normal vector
@@ -40,7 +62,6 @@
         var intersection = this.rayPlaneIntersection(pickRay.origin, pickRay.direction,
                                                      this.properties.position, upVector);                                 
         this.graboffset = Vec3.subtract(this.properties.position, intersection);
-        this.updatePosition(mouseEvent);
     };
     
     this.move = function(mouseEvent) {
@@ -51,6 +72,56 @@
         this.updatePosition(mouseEvent);
     };
     
+    this.rotate = function(mouseEvent) {
+        var pickRay = Camera.computePickRay(mouseEvent.x, mouseEvent.y)
+        var result = Overlays.findRayIntersection(pickRay);
+
+        if (result.intersects) {
+            var center = yawCenter;
+            var zero = yawZero;
+            var centerToZero = Vec3.subtract(center, zero);
+            var centerToIntersect = Vec3.subtract(center, result.intersection);
+            var angleFromZero = Vec3.orientedAngle(centerToZero, centerToIntersect, rotationNormal);
+            
+            var distanceFromCenter = Vec3.distance(center, result.intersection);
+            var snapToInner = false;
+            // var innerRadius = (Vec3.length(selectionManager.worldDimensions) / 2) * 1.1;
+            if (distanceFromCenter < innerRadius) {
+                angleFromZero = Math.floor(angleFromZero/innerSnapAngle) * innerSnapAngle;
+                snapToInner = true;
+            }
+            
+            var yawChange = Quat.fromVec3Degrees({ x: 0, y: angleFromZero, z: 0 });
+            Entities.editEntity(this.entityID, { rotation: Quat.multiply(yawChange, this.originalRotation) });
+            
+
+            // update the rotation display accordingly...
+            var startAtCurrent = 360-angleFromZero;
+            var endAtCurrent = 360;
+            var startAtRemainder = 0;
+            var endAtRemainder = 360-angleFromZero;
+            if (angleFromZero < 0) {
+                startAtCurrent = 0;
+                endAtCurrent = -angleFromZero;
+                startAtRemainder = -angleFromZero;
+                endAtRemainder = 360;
+            }
+
+            if (snapToInner) {
+                Overlays.editOverlay(this.rotateOverlayOuter, { startAt: 0, endAt: 360 });
+                Overlays.editOverlay(this.rotateOverlayInner, { startAt: startAtRemainder, endAt: endAtRemainder });
+                Overlays.editOverlay(this.rotateOverlayCurrent, { startAt: startAtCurrent, endAt: endAtCurrent, size: innerRadius,
+                                                                majorTickMarksAngle: innerSnapAngle, minorTickMarksAngle: 0,
+                                                                majorTickMarksLength: -0.25, minorTickMarksLength: 0, });
+            } else {
+                Overlays.editOverlay(this.rotateOverlayInner, { startAt: 0, endAt: 360 });
+                Overlays.editOverlay(this.rotateOverlayOuter, { startAt: startAtRemainder, endAt: endAtRemainder });
+                Overlays.editOverlay(this.rotateOverlayCurrent, { startAt: startAtCurrent, endAt: endAtCurrent, size: outerRadius,
+                                                                majorTickMarksAngle: 45.0, minorTickMarksAngle: 5,
+                                                                majorTickMarksLength: 0.25, minorTickMarksLength: 0.1, });
+            }
+        }    
+    };
       // All callbacks start by updating the properties
     this.updateProperties = function(entityID) {
         if (this.entityID === null || !this.entityID.isKnownID) {
@@ -58,7 +129,109 @@
         }
         this.properties = Entities.getEntityProperties(this.entityID);
     };
-  
+
+    this.cleanupRotateOverlay = function() {
+        Overlays.deleteOverlay(this.rotateOverlayTarget);
+        Overlays.deleteOverlay(this.rotateOverlayInner);
+        Overlays.deleteOverlay(this.rotateOverlayOuter);
+        Overlays.deleteOverlay(this.rotateOverlayCurrent);
+        this.rotateOverlayTarget = null;
+        this.rotateOverlayInner = null;
+        this.rotateOverlayOuter = null;
+        this.rotateOverlayCurrent = null;
+    }
+    
+    this.displayRotateOverlay = function(mouseEvent) {
+        var yawOverlayAngles = { x: 90, y: 0, z: 0 };
+        var yawOverlayRotation = Quat.fromVec3Degrees(yawOverlayAngles);
+
+        yawNormal   = { x: 0, y: 1, z: 0 };
+        yawCenter = this.properties.position;
+        rotationNormal = yawNormal;
+
+        // Size the overlays to the current selection size
+        var diagonal = (Vec3.length(this.properties.dimensions) / 2) * 1.1;
+        var halfDimensions = Vec3.multiply(this.properties.dimensions, 0.5);
+        innerRadius = diagonal;
+        outerRadius = diagonal * 1.15;
+        var innerAlpha = 0.2;
+        var outerAlpha = 0.2;
+
+        this.rotateOverlayTarget = Overlays.addOverlay("circle3d", {
+                        position: this.properties.position,
+                        size: 10000,
+                        color: { red: 0, green: 0, blue: 0 },
+                        alpha: 0.0,
+                        solid: true,
+                        visible: true,
+                        rotation: yawOverlayRotation,
+                        ignoreRayIntersection: false
+                    });
+
+        this.rotateOverlayInner = Overlays.addOverlay("circle3d", {
+                    position: this.properties.position,
+                    size: innerRadius,
+                    innerRadius: 0.9,
+                    alpha: innerAlpha,
+                    color: { red: 51, green: 152, blue: 203 },
+                    solid: true,
+                    visible: true,
+                    rotation: yawOverlayRotation,
+                    hasTickMarks: true,
+                    majorTickMarksAngle: innerSnapAngle,
+                    minorTickMarksAngle: 0,
+                    majorTickMarksLength: -0.25,
+                    minorTickMarksLength: 0,
+                    majorTickMarksColor: { red: 0, green: 0, blue: 0 },
+                    minorTickMarksColor: { red: 0, green: 0, blue: 0 },
+                    ignoreRayIntersection: true, // always ignore this
+                });
+
+        this.rotateOverlayOuter = Overlays.addOverlay("circle3d", {
+                    position: this.properties.position,
+                    size: outerRadius,
+                    innerRadius: 0.9,
+                    startAt: 0,
+                    endAt: 360,
+                    alpha: outerAlpha,
+                    color: { red: 51, green: 152, blue: 203 },
+                    solid: true,
+                    visible: true,
+                    rotation: yawOverlayRotation,
+
+                    hasTickMarks: true,
+                    majorTickMarksAngle: 45.0,
+                    minorTickMarksAngle: 5,
+                    majorTickMarksLength: 0.25,
+                    minorTickMarksLength: 0.1,
+                    majorTickMarksColor: { red: 0, green: 0, blue: 0 },
+                    minorTickMarksColor: { red: 0, green: 0, blue: 0 },
+                    ignoreRayIntersection: true, // always ignore this
+                });
+
+        this.rotateOverlayCurrent = Overlays.addOverlay("circle3d", {
+                    position: this.properties.position,
+                    size: outerRadius,
+                    startAt: 0,
+                    endAt: 0,
+                    innerRadius: 0.9,
+                    color: { red: 224, green: 67, blue: 36},
+                    alpha: 0.8,
+                    solid: true,
+                    visible: true,
+                    rotation: yawOverlayRotation,
+                    ignoreRayIntersection: true, // always ignore this
+                    hasTickMarks: true,
+                    majorTickMarksColor: { red: 0, green: 0, blue: 0 },
+                    minorTickMarksColor: { red: 0, green: 0, blue: 0 },
+                });
+
+        var pickRay = Camera.computePickRay(mouseEvent.x, mouseEvent.y)
+        var result = Overlays.findRayIntersection(pickRay);
+        yawZero = result.intersection;
+                
+    };
+    
     this.preload = function(entityID) {
         this.updateProperties(entityID); // All callbacks start by updating the properties
     };
@@ -66,15 +239,56 @@
     this.clickDownOnEntity = function(entityID, mouseEvent) {
         this.updateProperties(entityID); // All callbacks start by updating the properties
         this.grab(mouseEvent);
+
+        var d = new Date();
+        this.clickedAt = d.getTime();
+        this.firstHolding = true;
+        
+        this.clickedX = mouseEvent.x;
+        this.clickedY = mouseEvent.y;
     };
-    
+
     this.holdingClickOnEntity = function(entityID, mouseEvent) {
+
         this.updateProperties(entityID); // All callbacks start by updating the properties
-        this.move(mouseEvent);
+
+        if (this.firstHolding) {
+            // if we haven't moved yet...
+            if (this.clickedX == mouseEvent.x && this.clickedY == mouseEvent.y) {
+                var d = new Date();
+                var now = d.getTime();
+        
+                if (now - this.clickedAt > 500) {
+                    this.displayRotateOverlay(mouseEvent);
+                    this.firstHolding = false;
+                    this.rotateMode = true;
+                    this.originalRotation = this.properties.rotation;
+                }
+            } else {
+                this.firstHolding = false;
+            }
+        }
+
+        if (this.rotateMode) {
+            this.rotate(mouseEvent);
+        } else {
+            this.move(mouseEvent);
+        }
     };
     this.clickReleaseOnEntity = function(entityID, mouseEvent) {
         this.updateProperties(entityID); // All callbacks start by updating the properties
-        this.release(mouseEvent);
+        if (this.rotateMode) {
+            this.rotate(mouseEvent);
+        } else {
+            this.release(mouseEvent);
+        }
+        
+        if (this.rotateOverlayTarget != null) {
+            this.cleanupRotateOverlay();
+            this.rotateMode = false;
+        }
+
+        this.firstHolding = false;
     };
 
 })