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Merge pull request #3416 from ZappoMan/fixGlitches

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normalize all quats before packing
This commit is contained in:
Clément Brisset 2014-09-15 09:40:07 -07:00
commit 198b14310f
1 changed files with 5 additions and 4 deletions
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9
libraries/shared/src/GLMHelpers.cpp
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@ -86,12 +86,13 @@ int unpackFloatAngleFromTwoByte(const uint16_t* byteAnglePointer, float* destina
} }
int packOrientationQuatToBytes(unsigned char* buffer, const glm::quat& quatInput) { int packOrientationQuatToBytes(unsigned char* buffer, const glm::quat& quatInput) {
glm::quat quatNormalized = glm::normalize(quatInput);
const float QUAT_PART_CONVERSION_RATIO = (std::numeric_limits<uint16_t>::max() / 2.f); const float QUAT_PART_CONVERSION_RATIO = (std::numeric_limits<uint16_t>::max() / 2.f);
uint16_t quatParts[4]; uint16_t quatParts[4];
quatParts[0] = floorf((quatInput.x + 1.f) * QUAT_PART_CONVERSION_RATIO); quatParts[0] = floorf((quatNormalized.x + 1.f) * QUAT_PART_CONVERSION_RATIO);
quatParts[1] = floorf((quatInput.y + 1.f) * QUAT_PART_CONVERSION_RATIO); quatParts[1] = floorf((quatNormalized.y + 1.f) * QUAT_PART_CONVERSION_RATIO);
quatParts[2] = floorf((quatInput.z + 1.f) * QUAT_PART_CONVERSION_RATIO); quatParts[2] = floorf((quatNormalized.z + 1.f) * QUAT_PART_CONVERSION_RATIO);
quatParts[3] = floorf((quatInput.w + 1.f) * QUAT_PART_CONVERSION_RATIO); quatParts[3] = floorf((quatNormalized.w + 1.f) * QUAT_PART_CONVERSION_RATIO);
memcpy(buffer, &quatParts, sizeof(quatParts)); memcpy(buffer, &quatParts, sizeof(quatParts));
return sizeof(quatParts); return sizeof(quatParts);