10 : p0_(p0), p1_(p1), width_(
width), cap_(cap) {
16 auto determinant =
transform.GetDeterminant();
17 if (determinant == 0) {
21 Scalar min_size = 1.0f / sqrt(std::abs(determinant));
22 return std::max(
width, min_size) * 0.5f;
26 bool allow_zero_length)
const {
32 auto along = p1_ - p0_;
35 if (!allow_zero_length) {
39 return {stroke_half_width, 0};
41 return along * stroke_half_width /
length;
45bool LineGeometry::ComputeCorners(
Point corners[4],
47 bool extend_endpoints)
const {
48 auto along = ComputeAlongVector(
transform, extend_endpoints);
53 auto across =
Vector2(along.y, -along.x);
54 corners[0] = p0_ - across;
55 corners[1] = p1_ - across;
56 corners[2] = p0_ + across;
57 corners[3] = p1_ + across;
58 if (extend_endpoints) {
70 using VT = SolidFillVertexShader::PerVertexData;
76 std::shared_ptr<Tessellator> tessellator = renderer.GetTessellator();
77 auto generator = tessellator->RoundCapLine(
transform, p0_, p1_, radius);
86 auto& host_buffer = renderer.GetTransientsBuffer();
89 BufferView vertex_buffer = host_buffer.Emplace(
90 count *
sizeof(VT),
alignof(VT), [&corners](uint8_t*
buffer) {
91 auto vertices =
reinterpret_cast<VT*
>(
buffer);
92 for (
auto& corner : corners) {
103 .vertex_buffer = vertex_buffer,
104 .vertex_count =
count,
117 for (
int i = 0; i < 4; i++) {
128 return coverage.has_value() ? coverage->Contains(rect) :
false;
132 return cap_ !=
Cap::kRound && (p0_.x == p1_.
x || p0_.y == p1_.
y);
Matrix GetShaderTransform(const RenderPass &pass) const
Get the vertex shader transform used for drawing this Entity.
const Matrix & GetTransform() const
Get the global transform matrix for this Entity.
static GeometryResult ComputePositionGeometry(const ContentContext &renderer, const Tessellator::VertexGenerator &generator, const Entity &entity, RenderPass &pass)
LineGeometry(Point p0, Point p1, Scalar width, Cap cap)
static Scalar ComputePixelHalfWidth(const Matrix &transform, Scalar width)
GeometryResult GetPositionBuffer(const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override
bool IsAxisAlignedRect() const override
std::optional< Rect > GetCoverage(const Matrix &transform) const override
bool CoversArea(const Matrix &transform, const Rect &rect) const override
Determines if this geometry, transformed by the given transform, will completely cover all surface ar...
Render passes encode render commands directed as one specific render target into an underlying comman...
static const uint8_t buffer[]
#define FML_DCHECK(condition)
@ kNone
Does not use the index buffer.
constexpr float kEhCloseEnough
static const GeometryResult kEmptyResult
static SkColor4f transform(SkColor4f c, SkColorSpace *src, SkColorSpace *dst)
A 4x4 matrix using column-major storage.
constexpr Type GetLength() const
static constexpr std::optional< TRect > MakePointBounds(const U &value)