void Mouse::fireMultiTouchEvent(uint8_t cContacts,
const LONG64 *paContacts,
uint32_t u32ScanTime)
{
com::SafeArray<SHORT> xPositions(cContacts);
com::SafeArray<SHORT> yPositions(cContacts);
com::SafeArray<USHORT> contactIds(cContacts);
com::SafeArray<USHORT> contactFlags(cContacts);
uint8_t i;
for (i = 0; i < cContacts; i++)
{
uint32_t u32Lo = RT_LO_U32(paContacts[i]);
uint32_t u32Hi = RT_HI_U32(paContacts[i]);
xPositions[i] = (int16_t)u32Lo;
yPositions[i] = (int16_t)(u32Lo >> 16);
contactIds[i] = RT_BYTE1(u32Hi);
contactFlags[i] = RT_BYTE2(u32Hi);
}
VBoxEventDesc evDesc;
evDesc.init(mEventSource, VBoxEventType_OnGuestMultiTouch,
cContacts, ComSafeArrayAsInParam(xPositions), ComSafeArrayAsInParam(yPositions),
ComSafeArrayAsInParam(contactIds), ComSafeArrayAsInParam(contactFlags), u32ScanTime);
evDesc.fire(0);
}
void InstancerOp::create3DGrid(unsigned int numItems, const Vec3& areaSpread, std::vector<Vec3>& aItemPositions)
{
// round up to the next cube number, so we get a good even distribution for both X, Y and Z
unsigned int edgeCount = (unsigned int)(cbrtf((float)numItems));
if (edgeCount * edgeCount * edgeCount < numItems)
edgeCount += 1;
unsigned int fullItemCount = edgeCount * edgeCount * edgeCount;
unsigned int extra = fullItemCount - numItems;
fprintf(stderr, "Creating 3D grid of: %u items, 'full' size: %u.\n", numItems, fullItemCount);
aItemPositions.clear();
// TODO: could do resize() here and then just set the members of each item
// directly, which might be more efficient...
aItemPositions.reserve(numItems);
float edgeDelta = 1.0f / (float)edgeCount;
std::vector<float> xPositions(edgeCount);
std::vector<float> yPositions(edgeCount);
std::vector<float> zPositions(edgeCount);
for (unsigned int i = 0; i < edgeCount; i++)
{
float samplePos = (float(i) * edgeDelta) - 0.5f;
xPositions[i] = samplePos * areaSpread.x;
yPositions[i] = samplePos * areaSpread.y;
zPositions[i] = samplePos * areaSpread.z;
}
if (extra > 0)
{
// we need to skip certain items
unsigned int skipStride = fullItemCount / extra;
unsigned int count = 0;
for (unsigned int xInd = 0; xInd < edgeCount; xInd++)
{
const float xPos = xPositions[xInd];
for (unsigned int yInd = 0; yInd < edgeCount; yInd++)
{
float yPos = yPositions[yInd];
for (unsigned int zInd = 0; zInd < edgeCount; zInd++)
{
if (extra > 0 && ++count >= skipStride)
{
count = 0;
continue;
}
float zPos = zPositions[zInd];
aItemPositions.push_back(Vec3(xPos, yPos, zPos));
}
}
}
}
else
{
for (unsigned int xInd = 0; xInd < edgeCount; xInd++)
{
const float xPos = xPositions[xInd];
for (unsigned int yInd = 0; yInd < edgeCount; yInd++)
{
float yPos = yPositions[yInd];
for (unsigned int zInd = 0; zInd < edgeCount; zInd++)
{
float zPos = zPositions[zInd];
aItemPositions.push_back(Vec3(xPos, yPos, zPos));
}
}
}
}
}
