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#include "Renderables.h"
#include "LightNode.h"
#include "../EntitySettings.h"
namespace entity
{
namespace
{
inline void applyTransform(std::vector<render::RenderVertex>& vertices, const Matrix4& transform)
{
for (auto& vertex : vertices)
{
auto transformed = transform * Vector3{ vertex.vertex.x(), vertex.vertex.y(), vertex.vertex.z() };
vertex.vertex = { static_cast<float>(transformed.x()), static_cast<float>(transformed.y()), static_cast<float>(transformed.z()) };
}
}
}
void RenderableLightOctagon::updateGeometry()
{
if (!_needsUpdate) return;
_needsUpdate = false;
// Generate the indexed vertex data
static Vector3 Origin(0, 0, 0);
static Vector3 Extents(8, 8, 8);
// Calculate the light vertices of this bounding box and store them into <points>
Vector3f max(Origin + Extents);
Vector3f min(Origin - Extents);
Vector3f mid(Origin);
auto colour = _light.getRenderState() == scene::INode::RenderState::Active ?
_light.getEntityColour() : INACTIVE_ENTITY_COLOUR;
colour.w() = _alpha;
// top, bottom, tleft, tright, bright, bleft
std::vector<render::RenderVertex> vertices
{
render::RenderVertex(Vector3{ mid[0], mid[1], max[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ mid[0], mid[1], min[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ min[0], max[1], mid[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ max[0], max[1], mid[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ max[0], min[1], mid[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ min[0], min[1], mid[2] }, {0,0,0}, {0,0}, colour),
};
// Orient the points using the transform
applyTransform(vertices, _light.localToWorld());
// Indices are always the same, therefore constant
static const std::vector<unsigned int> Indices
{
0, 2, 3,
0, 3, 4,
0, 4, 5,
0, 5, 2,
1, 2, 5,
1, 5, 4,
1, 4, 3,
1, 3, 2
};
updateGeometryWithData(render::GeometryType::Triangles, vertices, Indices);
}
void RenderableLightVolume::updateGeometry()
{
if (!_needsUpdate) return;
_needsUpdate = false;
if (_light.isProjected())
{
updateProjectedLightVolume();
}
else
{
updatePointLightVolume();
}
}
void RenderableLightVolume::updatePointLightVolume()
{
static Vector3 Origin(0, 0, 0);
const auto& radius = _light.getLightRadius();
// Calculate the corner vertices of this bounding box, plus the mid-point
Vector3f max(Origin + radius);
Vector3f min(Origin - radius);
auto colour = _light.getRenderState() == scene::INode::RenderState::Active ?
_light.getEntityColour() : INACTIVE_ENTITY_COLOUR;
// Load the 8 corner points
std::vector<render::RenderVertex> vertices
{
render::RenderVertex(Vector3{ min[0], min[1], min[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ max[0], min[1], min[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ max[0], max[1], min[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ min[0], max[1], min[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ min[0], min[1], max[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ max[0], min[1], max[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ max[0], max[1], max[2] }, {0,0,0}, {0,0}, colour),
render::RenderVertex(Vector3{ min[0], max[1], max[2] }, {0,0,0}, {0,0}, colour),
};
// Orient the points using the transform
applyTransform(vertices, _light.localToWorld());
static const std::vector<unsigned int> Indices
{
0, 1, // bottom rectangle
1, 2, //
2, 3, //
3, 0, //
4, 5, // top rectangle
5, 6, //
6, 7, //
7, 4, //
0, 4, // vertical edges
1, 5, //
2, 6, //
3, 7, //
0, 6, // diagonals
1, 7, //
2, 4, //
3, 5, //
};
updateGeometryWithData(render::GeometryType::Lines, vertices, Indices);
}
void RenderableLightVolume::updateProjectedLightVolume()
{
const auto& frustum = _light.getLightFrustum();
// greebo: These four define the base area and are always needed to draw the light
auto backUpperLeft = frustum.getCornerPoint(Frustum::BACK, Frustum::TOP_LEFT);
auto backLowerLeft = frustum.getCornerPoint(Frustum::BACK, Frustum::BOTTOM_LEFT);
auto backUpperRight = frustum.getCornerPoint(Frustum::BACK, Frustum::TOP_RIGHT);
auto backLowerRight = frustum.getCornerPoint(Frustum::BACK, Frustum::BOTTOM_RIGHT);
const auto& lightStart = _light.getLightStart();
auto colour = _light.getEntityColour();
if (lightStart != Vector3(0, 0, 0))
{
// Calculate the vertices defining the top area
auto frontUpperLeft = frustum.getCornerPoint(Frustum::FRONT, Frustum::TOP_LEFT);
auto frontLowerLeft = frustum.getCornerPoint(Frustum::FRONT, Frustum::BOTTOM_LEFT);
auto frontUpperRight = frustum.getCornerPoint(Frustum::FRONT, Frustum::TOP_RIGHT);
auto frontLowerRight = frustum.getCornerPoint(Frustum::FRONT, Frustum::BOTTOM_RIGHT);
std::vector<render::RenderVertex> vertices
{
render::RenderVertex(frontUpperLeft, {0,0,0}, {0,0}, colour),
render::RenderVertex(frontLowerLeft, {0,0,0}, {0,0}, colour),
render::RenderVertex(frontLowerRight, {0,0,0}, {0,0}, colour),
render::RenderVertex(frontUpperRight, {0,0,0}, {0,0}, colour),
render::RenderVertex(backUpperLeft, {0,0,0}, {0,0}, colour),
render::RenderVertex(backLowerLeft, {0,0,0}, {0,0}, colour),
render::RenderVertex(backLowerRight, {0,0,0}, {0,0}, colour),
render::RenderVertex(backUpperRight, {0,0,0}, {0,0}, colour),
};
// Orient the points using the transform
applyTransform(vertices, _light.localToWorld());
static const std::vector<unsigned int> Indices
{
0, 4, // top up right to bottom up right
1, 5, // top down right to bottom down right
2, 6, // top down left to bottom down left
3, 7, // top up left to bottom up left
0, 1, // top up right to top down right
1, 2, // top down right to top down left
2, 3, // top down left to top up left
3, 0, // top up left to top up right
4, 5, // bottom up right to bottom down right
5, 6, // bottom down right to bottom down left
6, 7, // bottom down left to bottom up left
7, 4, // bottom up left to bottom up right
};
updateGeometryWithData(render::GeometryType::Lines, vertices, Indices);
}
else
{
// no light_start, just use the top vertex (doesn't need to be mirrored)
auto top = Plane3::intersect(frustum.left, frustum.right, frustum.top);
std::vector<render::RenderVertex> vertices
{
render::RenderVertex(top, {0,0,0}, {0,0}, colour),
render::RenderVertex(backUpperLeft, {0,0,0}, {0,0}, colour),
render::RenderVertex(backLowerLeft, {0,0,0}, {0,0}, colour),
render::RenderVertex(backLowerRight, {0,0,0}, {0,0}, colour),
render::RenderVertex(backUpperRight, {0,0,0}, {0,0}, colour),
};
// Orient the points using the transform
applyTransform(vertices, _light.localToWorld());
static const std::vector<unsigned int> Indices
{
0, 1, // top to first
0, 2, // top to second
0, 3, // top to third
0, 4, // top to fourth
1, 2, // first to second
2, 3, // second to third
3, 4, // third to fourth
4, 1, // fourth to first
};
updateGeometryWithData(render::GeometryType::Lines, vertices, Indices);
}
}
namespace detail
{
inline void addVertex(std::vector<render::RenderVertex>& vertices, std::vector<unsigned int>& indices,
const Vector3& vertex, const Vector4& colour)
{
indices.push_back(static_cast<unsigned int>(vertices.size()));
vertices.push_back(render::RenderVertex(vertex, { 0,0,0 }, { 0,0 }, colour));
}
}
void RenderableLightVertices::updateGeometry()
{
if (!_needsUpdate) return;
_needsUpdate = false;
std::vector<render::RenderVertex> vertices;
std::vector<unsigned int> indices;
vertices.reserve(LightVertexInstanceSet::NumVertices);
indices.reserve(LightVertexInstanceSet::NumVertices);
auto& settings = *EntitySettings::InstancePtr();
const auto& colourVertexSelected = settings.getLightVertexColour(LightEditVertexType::Selected);
const auto& colourVertexDeselected = settings.getLightVertexColour(LightEditVertexType::Deselected);
const auto& colourVertexInactive = settings.getLightVertexColour(LightEditVertexType::Inactive);
const auto& colourStartEndSelected = settings.getLightVertexColour(LightEditVertexType::StartEndSelected);
const auto& colourStartEndDeselected = settings.getLightVertexColour(LightEditVertexType::StartEndDeselected);
// Local colour evaluation lambdas
auto getRegularVertexColour = [&](const VertexInstance& instance)->const Vector3&
{
return _mode != selection::ComponentSelectionMode::Vertex ? colourVertexInactive :
instance.isSelected() ? colourVertexSelected : colourVertexDeselected;
};
auto getStartEndVertexColour = [&](const VertexInstance& instance)->const Vector3&
{
return _mode != selection::ComponentSelectionMode::Vertex ? colourVertexInactive :
instance.isSelected() ? colourStartEndSelected : colourStartEndDeselected;
};
if (_light.isProjected())
{
detail::addVertex(vertices, indices, _instances.target.getVertex(), getRegularVertexColour(_instances.target));
detail::addVertex(vertices, indices, _instances.right.getVertex(), getRegularVertexColour(_instances.right));
detail::addVertex(vertices, indices, _instances.up.getVertex(), getRegularVertexColour(_instances.up));
if (_useFlags.start)
{
detail::addVertex(vertices, indices, _instances.start.getVertex(), getStartEndVertexColour(_instances.start));
}
if (_useFlags.end)
{
detail::addVertex(vertices, indices, _instances.end.getVertex(), getStartEndVertexColour(_instances.end));
}
}
else
{
// Not a projected light, include just the light centre vertex
detail::addVertex(vertices, indices, _instances.center.getVertex(), getRegularVertexColour(_instances.center));
}
// Apply the local2world transform to all the vertices
const auto& local2World = _light.localToWorld();
applyTransform(vertices, local2World);
updateGeometryWithData(render::GeometryType::Points, vertices, indices);
}
} // namespace
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