Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x | import macro from 'vtk.js/Sources/macros';
import { add } from 'vtk.js/Sources/Common/Core/Math';
export default function widgetBehavior(publicAPI, model) {
model.classHierarchy.push('vtkPolyLineWidgetProp');
model._isDragging = false;
// --------------------------------------------------------------------------
// Display 2D
// --------------------------------------------------------------------------
publicAPI.setDisplayCallback = (callback) =>
model.representations[0].setDisplayCallback(callback);
// --------------------------------------------------------------------------
// Interactor events
// --------------------------------------------------------------------------
function ignoreKey(e) {
return e.altKey || e.controlKey || e.shiftKey;
}
function updateMoveHandle(callData) {
const manipulator =
model.activeState?.getManipulator?.() ?? model.manipulator;
if (!manipulator) {
return macro.VOID;
}
const { worldCoords, worldDelta } = manipulator.handleEvent(
callData,
model._apiSpecificRenderWindow
);
const isHandleMoving =
model.activeState === model.widgetState.getMoveHandle() ||
model._isDragging;
// the line is pickable but not draggable
const isPickingLine = !model.activeState.setOrigin;
if (worldCoords.length && isHandleMoving && !isPickingLine) {
const curOrigin = model.activeState.getOrigin();
if (curOrigin) {
model.activeState.setOrigin(add(curOrigin, worldDelta, []));
} else {
model.activeState.setOrigin(worldCoords);
}
publicAPI.invokeInteractionEvent();
return macro.EVENT_ABORT;
}
return macro.VOID;
}
// --------------------------------------------------------------------------
// Right click: Delete handle
// --------------------------------------------------------------------------
publicAPI.handleRightButtonPress = (e) => {
if (
!model.activeState ||
!model.activeState.getActive() ||
!model.pickable ||
ignoreKey(e)
) {
return macro.VOID;
}
if (model.activeState !== model.widgetState.getMoveHandle()) {
model._interactor.requestAnimation(publicAPI);
model.activeState.deactivate();
model.widgetState.removeHandle(model.activeState);
model.activeState = null;
model._interactor.cancelAnimation(publicAPI);
}
publicAPI.invokeStartInteractionEvent();
publicAPI.invokeInteractionEvent();
publicAPI.invokeEndInteractionEvent();
return macro.EVENT_ABORT;
};
// --------------------------------------------------------------------------
// Left press: Select handle to drag
// --------------------------------------------------------------------------
publicAPI.handleLeftButtonPress = (e) => {
if (
!model.activeState ||
!model.activeState.getActive() ||
!model.pickable ||
ignoreKey(e)
) {
return macro.VOID;
}
const manipulator =
model.activeState?.getManipulator?.() ?? model.manipulator;
if (
model.activeState === model.widgetState.getMoveHandle() &&
manipulator
) {
updateMoveHandle(e);
const moveHandle = model.widgetState.getMoveHandle();
const newHandle = model.widgetState.addHandle();
newHandle.setOrigin(moveHandle.getOrigin());
newHandle.setColor(moveHandle.getColor());
newHandle.setScale1(moveHandle.getScale1());
newHandle.setManipulator(manipulator);
} else if (model.dragable) {
// Update worldDelta
manipulator.handleEvent(e, model._apiSpecificRenderWindow);
model._isDragging = true;
model._apiSpecificRenderWindow.setCursor('grabbing');
model._interactor.requestAnimation(publicAPI);
}
publicAPI.invokeStartInteractionEvent();
return macro.EVENT_ABORT;
};
// --------------------------------------------------------------------------
// Mouse move: Drag selected handle / Handle follow the mouse
// --------------------------------------------------------------------------
publicAPI.handleMouseMove = (callData) => {
if (
model.pickable &&
model.dragable &&
model.activeState &&
model.activeState.getActive() &&
!ignoreKey(callData)
) {
if (updateMoveHandle(callData) === macro.EVENT_ABORT) {
return macro.EVENT_ABORT;
}
}
if (model.hasFocus) {
model._widgetManager.disablePicking();
}
return macro.VOID;
};
// --------------------------------------------------------------------------
// Left release: Finish drag / Create new handle
// --------------------------------------------------------------------------
publicAPI.handleLeftButtonRelease = () => {
if (
!model.activeState ||
!model.activeState.getActive() ||
!model.pickable
) {
return macro.VOID;
}
if (model._isDragging) {
model._apiSpecificRenderWindow.setCursor('pointer');
model.widgetState.deactivate();
model._interactor.cancelAnimation(publicAPI);
model._isDragging = false;
} else if (model.activeState !== model.widgetState.getMoveHandle()) {
model.widgetState.deactivate();
}
if (
(model.hasFocus && !model.activeState) ||
(model.activeState && !model.activeState.getActive())
) {
model._widgetManager.enablePicking();
model._interactor.render();
}
publicAPI.invokeEndInteractionEvent();
return macro.EVENT_ABORT;
};
// --------------------------------------------------------------------------
// Escape key: Release focus to switch to drag mode
// --------------------------------------------------------------------------
publicAPI.handleKeyDown = ({ key }) => {
if (key === 'Escape') {
publicAPI.loseFocus();
}
};
// --------------------------------------------------------------------------
// Focus API - modeHandle follow mouse when widget has focus
// --------------------------------------------------------------------------
publicAPI.grabFocus = () => {
if (!model.hasFocus) {
model.activeState = model.widgetState.getMoveHandle();
model.activeState.activate();
model.activeState.setVisible(true);
model._interactor.requestAnimation(publicAPI);
publicAPI.invokeStartInteractionEvent();
}
model.hasFocus = true;
};
// --------------------------------------------------------------------------
publicAPI.loseFocus = () => {
if (model.hasFocus) {
model._interactor.cancelAnimation(publicAPI);
publicAPI.invokeEndInteractionEvent();
}
model.widgetState.deactivate();
model.widgetState.getMoveHandle().deactivate();
model.widgetState.getMoveHandle().setVisible(false);
model.widgetState.getMoveHandle().setOrigin(null);
model.activeState = null;
model.hasFocus = false;
model._widgetManager.enablePicking();
model._interactor.render();
};
}
|