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Trying a different method of updating the normals.

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This commit is contained in:
Andrzej Kapolka 2013-09-23 11:17:12 -07:00
parent 0fa2eca02d
commit 8e2be380f6
1 changed files with 17 additions and 5 deletions
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22
interface/src/avatar/BlendFace.cpp
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@ -6,6 +6,8 @@
// Copyright (c) 2013 High Fidelity, Inc. All rights reserved.
//
#include <numeric>
#include <QNetworkReply>
#include "Application.h"
@ -50,25 +52,35 @@ bool BlendFace::render(float alpha) {
// start with the base
int vertexCount = _geometry.vertices.size();
int normalCount = _geometry.normals.size();
_blendedVertices.resize(vertexCount);
_blendedNormals.resize(normalCount);
memcpy(_blendedVertices.data(), _geometry.vertices.constData(), vertexCount * sizeof(glm::vec3));
memcpy(_blendedNormals.data(), _geometry.normals.constData(), normalCount * sizeof(glm::vec3));
// find the coefficient total
const vector<float>& coefficients = _owningHead->getBlendshapeCoefficients();
float coefficientTotal = accumulate(coefficients.begin(), coefficients.end(), 0.0f);
// for the normals, only use the base if we have nothing else
int normalCount = _geometry.normals.size();
_blendedNormals.resize(normalCount);
if (coefficientTotal == 0.0f) {
memcpy(_blendedNormals.data(), _geometry.normals.constData(), normalCount * sizeof(glm::vec3));
} else {
memset(_blendedNormals.data(), 0, normalCount * sizeof(glm::vec3));
}
// blend in each coefficient
const vector<float>& coefficients = _owningHead->getBlendshapeCoefficients();
for (int i = 0; i < coefficients.size(); i++) {
float coefficient = coefficients[i];
if (coefficient == 0.0f || i >= _geometry.blendshapes.size() || _geometry.blendshapes[i].vertices.isEmpty()) {
continue;
}
float normalCoefficient = coefficient / coefficientTotal;
const glm::vec3* vertex = _geometry.blendshapes[i].vertices.constData();
const glm::vec3* normal = _geometry.blendshapes[i].normals.constData();
for (const int* index = _geometry.blendshapes[i].indices.constData(),
*end = index + _geometry.blendshapes[i].indices.size(); index != end; index++, vertex++, normal++) {
_blendedVertices[*index] += *vertex * coefficient;
_blendedNormals[*index] += *normal * coefficient;
_blendedNormals[*index] += *normal * normalCoefficient;
}
}