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Android touch double tap detection (Refs #173) [skip ci]

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This commit is contained in:
saschawillems 2017-03-25 11:51:32 +01:00
parent 9edc993bf9
commit bf82026295
2 changed files with 21 additions and 5 deletions
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25
base/vulkanexamplebase.cpp
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@ -1181,6 +1181,9 @@ int32_t VulkanExampleBase::handleAppInput(struct android_app* app, AInputEvent*
switch (action) {
case AMOTION_EVENT_ACTION_UP: {
vulkanExample->lastTapTime = AMotionEvent_getEventTime(event);
vulkanExample->touchPos.x = AMotionEvent_getX(event, 0);
vulkanExample->touchPos.y = AMotionEvent_getY(event, 0);
vulkanExample->touchTimer = 0.0;
vulkanExample->touchDown = false;
vulkanExample->camera.keys.up = false;
@ -1188,9 +1191,22 @@ int32_t VulkanExampleBase::handleAppInput(struct android_app* app, AInputEvent*
break;
}
case AMOTION_EVENT_ACTION_DOWN: {
// Detect double tap
int64_t eventTime = AMotionEvent_getEventTime(event);
if (eventTime - vulkanExample->lastTapTime <= vks::android::DOUBLE_TAP_TIMEOUT) {
float deadZone = (160.f / vks::android::screenDensity) * vks::android::DOUBLE_TAP_SLOP * vks::android::DOUBLE_TAP_SLOP;
float x = AMotionEvent_getX(event, 0) - vulkanExample->touchPos.x;
float y = AMotionEvent_getY(event, 0) - vulkanExample->touchPos.y;
if ((x * x + y * y) < deadZone) {
vulkanExample->keyPressed(TOUCH_DOUBLE_TAP);
vulkanExample->touchDown = false;
}
}
else {
vulkanExample->touchDown = true;
}
vulkanExample->touchPos.x = AMotionEvent_getX(event, 0);
vulkanExample->touchPos.y = AMotionEvent_getY(event, 0);
vulkanExample->touchDown = true;
break;
}
case AMOTION_EVENT_ACTION_MOVE: {
@ -1203,14 +1219,13 @@ int32_t VulkanExampleBase::handleAppInput(struct android_app* app, AInputEvent*
vulkanExample->camera.rotate(glm::vec3(deltaX, 0.0f, 0.0f));
vulkanExample->camera.rotate(glm::vec3(0.0f, -deltaY, 0.0f));
vulkanExample->rotation.x += deltaX;
vulkanExample->rotation.y -= deltaY;
vulkanExample->rotation.x += deltaX;
vulkanExample->rotation.y -= deltaY;
vulkanExample->viewChanged();
vulkanExample->viewChanged();
vulkanExample->touchPos.x = eventX;
vulkanExample->touchPos.y = eventY;
break;
}
default: