C++ (Cpp) BezierCurve::getNumControlPoints示例

void CurveEditor::handleEvent(Event *event) {

    if(mode == MODE_ADD) {
        if(event->getDispatcher() == bg) {
            if(event->getEventCode() == InputEvent::EVENT_MOUSEDOWN) {
                InputEvent *inputEvent = (InputEvent*)event;
                if(selectedCurve) {
                    Vector2 pos = inputEvent->mousePosition;
                    pos.x = pos.x/610.0;
                    pos.y = 1.0-(pos.y/254.0);

                    BezierCurve *targetCurve = selectedCurve->targetCurve;

                    bool done = false;
                    for(int i=0; i < targetCurve->getNumControlPoints(); i++) {
                        if(pos.x < targetCurve->getControlPoint(i)->p2.x && !done) {
                            targetCurve->insertPoint = targetCurve->getControlPoint(i);
                            done = true;
                        }
                    }

                    targetCurve->addControlPoint2dWithHandles(pos.x-0.1, pos.y, pos.x, pos.y, pos.x + 0.1, pos.y);
                    selectedCurve->updatePoints();
                    selectedCurve->updateCurve();
                }
            }
        }
    }

    if(event->getDispatcher() == selectButton) {
        selectorImage->setPosition(selectButton->getPosition().x - 4, selectButton->getPosition().y - 4);
        setMode(0);
    }

    if(event->getDispatcher() == addButton) {
        selectorImage->setPosition(addButton->getPosition().x - 4, addButton->getPosition().y - 4);
        setMode(1);
    }

    if(event->getDispatcher() == removeButton) {
        selectorImage->setPosition(removeButton->getPosition().x - 4, removeButton->getPosition().y - 4);
        setMode(2);
    }

    if(event->getDispatcher() == treeContainer->getRootNode()) {
        if(event->getEventCode() == UITreeEvent::SELECTED_EVENT) {
            EditCurve *curve = (EditCurve *)treeContainer->getRootNode()->getSelectedNode()->getUserData();
            if(selectedCurve) {
                selectedCurve->Deactivate();
            }
            selectedCurve = curve;
            if(curve) {
                curve->Activate();
                curve->setMode(mode);
            }
        }
    }

    UIWindow::handleEvent(event);
}