//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
TEST(ModelBasicListTest, MergePartsWithTransformation)
{
Vec3fArray* verts = new Vec3fArray;
verts->reserve(3);
verts->add(Vec3f(0, 0, 0));
verts->add(Vec3f(1, 0, 0));
verts->add(Vec3f(1, 1, 0));
Vec3fArray* norms = new Vec3fArray;
norms->resize(3);
norms->set(0, Vec3f::Z_AXIS);
norms->set(1, Vec3f::Z_AXIS);
norms->set(2, Vec3f::Z_AXIS);
DrawableGeo* myGeo = new DrawableGeo;
myGeo->setFromTriangleVertexArray(verts);
myGeo->setNormalArray(norms);
Part* myPart = new Part;
myPart->setDrawable(myGeo);
Part* myPart2 = new Part;
myPart2->setDrawable(myGeo);
ref<ModelBasicList> myModel = new ModelBasicList;
myModel->addPart(myPart);
myModel->addPart(myPart2);
EXPECT_EQ(2, myModel->partCount());
Mat4d matrix;
matrix.setTranslation(Vec3d(10, 20, 30));
Transform* transform = new Transform;
transform->setLocalTransform(matrix);
myPart2->setTransform(transform);
myModel->mergeParts(1000, 1000);
EXPECT_EQ(1, myModel->partCount());
Part* mergedPart = myModel->part(0);
DrawableGeo* mergedGeo = dynamic_cast<DrawableGeo*>(mergedPart->drawable());
const Vec3fArray* vertices = mergedGeo->vertexArray();
EXPECT_EQ(6, vertices->size());
Vec3f v5 = vertices->get(5);
EXPECT_EQ(11, v5.x());
EXPECT_EQ(21, v5.y());
EXPECT_EQ(30, v5.z());
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
TEST(ModelBasicListTest, MergeParts)
{
Vec3fArray* verts = new Vec3fArray;
verts->reserve(3);
verts->add(Vec3f(0, 0, 0));
verts->add(Vec3f(1, 0, 0));
verts->add(Vec3f(1, 1, 0));
Vec3fArray* norms = new Vec3fArray;
norms->resize(3);
norms->set(0, Vec3f::Z_AXIS);
norms->set(1, Vec3f::Z_AXIS);
norms->set(2, Vec3f::Z_AXIS);
DrawableGeo* myGeo = new DrawableGeo;
myGeo->setFromTriangleVertexArray(verts);
myGeo->setNormalArray(norms);
Part* myPart = new Part;
myPart->setDrawable(myGeo);
Part* myPart2 = new Part;
myPart2->setDrawable(myGeo);
ref<ModelBasicList> myModel = new ModelBasicList;
myModel->addPart(myPart);
myModel->addPart(myPart2);
EXPECT_EQ(2, myModel->partCount());
myModel->mergeParts(1000, 1000);
EXPECT_EQ(1, myModel->partCount());
Part* mergedPart = myModel->part(0);
DrawableGeo* mergedGeo = dynamic_cast<DrawableGeo*>(mergedPart->drawable());
const Vec3fArray* vertices = mergedGeo->vertexArray();
EXPECT_EQ(6, vertices->size());
Vec3f v5 = vertices->get(5);
EXPECT_EQ(1, v5.x());
EXPECT_EQ(1, v5.y());
EXPECT_EQ(0, v5.z());
}
//--------------------------------------------------------------------------------------------------
/// Merge a drawable geometry object with this drawable possibly with transformation.
///
/// \param drawableGeo Drawable geometries to be merged
/// \param transformation Transformation matrix used to modify vertices
///
/// Vertices are converted if a transformation matrix is given.
/// Vertex arrays are appended to the merged vertex array. Primitives are copied and indices updated.
///
/// \warning All other vertex attribute data such as normals, texture coordinates etc will be set to NULL
//--------------------------------------------------------------------------------------------------
void DrawableGeo::mergeInto(const DrawableGeo& drawableGeo, const Mat4d* transformation)
{
size_t totalVertexCount = m_vertexBundle->vertexCount();
totalVertexCount += drawableGeo.vertexCount();
// Nothing to do if no existing vertices and no new vertices
if (totalVertexCount == 0)
{
return;
}
// Create a new vertex array and copy data from our array
cref<Vec3fArray> oldVertexArray = m_vertexBundle->vertexArray();
ref<Vec3fArray> newVertexArr = new Vec3fArray(totalVertexCount);
size_t currentVertexIndex = 0;
if (oldVertexArray.notNull() && oldVertexArray->size() > 0)
{
newVertexArr->copyData(*oldVertexArray, oldVertexArray->size(), 0, 0);
currentVertexIndex = oldVertexArray->size();
}
// Do the primitive set
size_t i = 0;
for (i = 0; i < drawableGeo.primitiveSetCount(); i++)
{
const PrimitiveSet* primSet = drawableGeo.primitiveSet(i);
CVF_ASSERT(primSet);
ref<UIntArray> indices = new UIntArray;
indices->resize(primSet->indexCount());
uint k;
for (k = 0; k < primSet->indexCount(); k++)
{
uint val = primSet->index(k);
val += static_cast<uint>(currentVertexIndex);
indices->set(k, val);
}
ref<PrimitiveSetIndexedUInt> prim = new PrimitiveSetIndexedUInt(primSet->primitiveType());
prim->setIndices(indices.p());
m_primitiveSets.push_back(prim.p());
}
const Vec3fArray* srcVertices = drawableGeo.vertexArray();
CVF_ASSERT(srcVertices);
if (transformation)
{
size_t j;
for (j = 0; j < srcVertices->size(); j++)
{
// Transform to double vector to be able to do a transform using a double matrix
Vec3d tmpDoubleVec(srcVertices->get(j));
tmpDoubleVec.transformPoint(*transformation);
newVertexArr->set(currentVertexIndex, Vec3f(tmpDoubleVec));
currentVertexIndex++;
}
}
else
{
// Append other drawable vertices vertex array and update vertex index
newVertexArr->copyData(*srcVertices, srcVertices->size(), currentVertexIndex, 0);
}
// Clear all vertex attributes and set new vertex array
m_vertexBundle->clear();
m_vertexBundle->setVertexArray(newVertexArr.p());
recomputeBoundingBox();
}