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#include "PatchNode.h"
#include "ipatch.h"
#include "math/Matrix3.h"
#include "math/Matrix4.h"
#include <GL/glew.h>
namespace textool
{
PatchNode::PatchNode(IPatch& patch) :
_patch(patch)
{
foreachVertex([&](PatchControl& vertex)
{
_vertices.emplace_back(vertex.vertex, vertex.texcoord);
});
}
IPatch& PatchNode::getPatch()
{
return _patch;
}
void PatchNode::beginTransformation()
{
// We call undoSave() here for consistency, but technically it's too early -
// the undo operation hasn't started yet
_patch.undoSave();
}
void PatchNode::revertTransformation()
{
_patch.revertTransform();
_patch.updateTesselation();
}
void PatchNode::transform(const Matrix3& transform)
{
foreachVertex([&](PatchControl& vertex)
{
vertex.texcoord = transform * vertex.texcoord;
});
// We have to force the patch to update its tesselation since
// modifying the "transformed" control point set won't trigger this
_patch.updateTesselation(true);
}
void PatchNode::transformComponents(const Matrix3& transform)
{
for (auto& vertex : _vertices)
{
if (!vertex.isSelected()) continue;
vertex.getTexcoord() = transform * vertex.getTexcoord();
}
// We have to force the patch to update its tesselation since
// modifying the "transformed" control point set won't trigger this
_patch.updateTesselation(true);
}
void PatchNode::commitTransformation()
{
// Patch::freezeTransform will call undoSave() before overwriting
// the control point set with the transformed ones
_patch.freezeTransform();
}
const AABB& PatchNode::localAABB() const
{
_bounds = AABB();
foreachVertex([&](PatchControl& vertex)
{
_bounds.includePoint({ vertex.texcoord.x(), vertex.texcoord.y(), 0 });
});
return _bounds;
}
void PatchNode::testSelect(Selector& selector, SelectionTest& test)
{
test.BeginMesh(Matrix4::getIdentity(), true);
auto mesh = _patch.getTesselatedPatchMesh();
auto indices = _patch.getRenderIndices();
// Copy the UV coords to the XYZ part to be able to use the TestQuadStrip method
for (auto& vertex : mesh.vertices)
{
vertex.vertex.set(vertex.texcoord.x(), vertex.texcoord.y(), 0);
}
SelectionIntersection best;
auto* pIndex = &indices.indices.front();
for (auto s = 0; s < indices.numStrips; s++)
{
test.TestQuadStrip(VertexPointer(&mesh.vertices.front().vertex, sizeof(VertexNT)), IndexPointer(pIndex, indices.lenStrips), best);
pIndex += indices.lenStrips;
}
if (best.isValid())
{
selector.addWithNullIntersection(*this);
}
}
void PatchNode::render(SelectionMode mode)
{
glEnable(GL_BLEND);
glBlendColor(0, 0, 0, 0.3f);
glBlendFunc(GL_CONSTANT_ALPHA_EXT, GL_ONE_MINUS_CONSTANT_ALPHA_EXT);
auto surfaceColour = getSurfaceColour(mode);
glColor4fv(surfaceColour);
// Get the tesselation and the first
auto tess = _patch.getTesselatedPatchMesh();
auto renderInfo = _patch.getRenderIndices();
auto* strip_indices = &renderInfo.indices.front();
for (std::size_t i = 0; i < renderInfo.numStrips; i++, strip_indices += renderInfo.lenStrips)
{
glBegin(GL_QUAD_STRIP);
for (std::size_t offset = 0; offset < renderInfo.lenStrips; offset++)
{
// Retrieve the mesh vertex from the line strip
auto& meshVertex = tess.vertices[*(strip_indices + offset)];
glVertex2d(meshVertex.texcoord[0], meshVertex.texcoord[1]);
}
glEnd();
}
glDisable(GL_BLEND);
if (mode == SelectionMode::Vertex)
{
renderComponents();
}
}
void PatchNode::expandSelectionToRelated()
{}
void PatchNode::snapto(float snap)
{
for (auto& vertex : _vertices)
{
auto& texcoord = vertex.getTexcoord();
texcoord.x() = float_snapped(texcoord.x(), snap);
texcoord.y() = float_snapped(texcoord.y(), snap);
}
_patch.updateTesselation(true);
}
void PatchNode::snapComponents(float snap)
{
for (auto& vertex : _vertices)
{
if (vertex.isSelected())
{
auto& texcoord = vertex.getTexcoord();
texcoord.x() = float_snapped(texcoord.x(), snap);
texcoord.y() = float_snapped(texcoord.y(), snap);
}
}
_patch.updateTesselation(true);
}
void PatchNode::mergeComponentsWith(const Vector2& center)
{
for (auto& vertex : _vertices)
{
if (vertex.isSelected())
{
vertex.getTexcoord() = center;
}
}
_patch.updateTesselation(true);
}
void PatchNode::foreachVertex(const std::function<void(PatchControl&)>& functor) const
{
for (std::size_t col = 0; col < _patch.getWidth(); ++col)
{
for (std::size_t row = 0; row < _patch.getHeight(); ++row)
{
functor(_patch.getTransformedCtrlAt(row, col));
}
}
}
}
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