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[Impeller] cleaned up StrokePathGeometry and removed runtime polymorphism (flutter/engine#50506)
followup to https://github.com/flutter/engine/pull/50379 improvements: 1) Symbols in cc are now in anonymous namespaces 1) The header is smaller (limits recompilation time) 1) Removed runtime polymorphism (faster, yay) ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide] and the [C++, Objective-C, Java style guides]. - [ ] I listed at least one issue that this PR fixes in the description above. - [x] I added new tests to check the change I am making or feature I am adding, or the PR is [test-exempt]. See [testing the engine] for instructions on writing and running engine tests. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I signed the [CLA]. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/wiki/Tree-hygiene#overview [Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene [test-exempt]: https://github.com/flutter/flutter/wiki/Tree-hygiene#tests [Flutter Style Guide]: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style [testing the engine]: https://github.com/flutter/flutter/wiki/Testing-the-engine [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/wiki/Chat
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gaaclarke
GitHub
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commit
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@ -11,10 +11,28 @@
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#include "impeller/geometry/path_component.h"
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namespace impeller {
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using VS = SolidFillVertexShader;
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class PositionWriter : public VertexWriter {
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namespace {
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template <typename VertexWriter>
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using CapProc = std::function<void(VertexWriter& vtx_builder,
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const Point& position,
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const Point& offset,
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Scalar scale,
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bool reverse)>;
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template <typename VertexWriter>
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using JoinProc = std::function<void(VertexWriter& vtx_builder,
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const Point& position,
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const Point& start_offset,
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const Point& end_offset,
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Scalar miter_limit,
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Scalar scale)>;
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class PositionWriter {
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public:
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void AppendVertex(const Point& point) override {
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void AppendVertex(const Point& point) {
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data_.emplace_back(SolidFillVertexShader::PerVertexData{.position = point});
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}
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@ -26,7 +44,7 @@ class PositionWriter : public VertexWriter {
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std::vector<SolidFillVertexShader::PerVertexData> data_ = {};
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};
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class PositionUVWriter : public VertexWriter {
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class PositionUVWriter {
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public:
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PositionUVWriter(Point texture_origin,
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Size texture_coverage,
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@ -39,7 +57,7 @@ class PositionUVWriter : public VertexWriter {
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return data_;
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}
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void AppendVertex(const Point& point) override {
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void AppendVertex(const Point& point) {
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data_.emplace_back(TextureFillVertexShader::PerVertexData{
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.position = point,
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.texture_coords =
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@ -53,233 +71,14 @@ class PositionUVWriter : public VertexWriter {
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const Matrix effect_transform_;
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};
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StrokePathGeometry::StrokePathGeometry(const Path& path,
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Scalar stroke_width,
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Scalar miter_limit,
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Cap stroke_cap,
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Join stroke_join)
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: path_(path),
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stroke_width_(stroke_width),
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miter_limit_(miter_limit),
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stroke_cap_(stroke_cap),
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stroke_join_(stroke_join) {}
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StrokePathGeometry::~StrokePathGeometry() = default;
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Scalar StrokePathGeometry::GetStrokeWidth() const {
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return stroke_width_;
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}
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Scalar StrokePathGeometry::GetMiterLimit() const {
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return miter_limit_;
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}
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Cap StrokePathGeometry::GetStrokeCap() const {
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return stroke_cap_;
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}
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Join StrokePathGeometry::GetStrokeJoin() const {
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return stroke_join_;
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}
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// static
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Scalar StrokePathGeometry::CreateBevelAndGetDirection(VertexWriter& vtx_builder,
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const Point& position,
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const Point& start_offset,
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const Point& end_offset) {
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Point vtx = position;
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vtx_builder.AppendVertex(vtx);
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Scalar dir = start_offset.Cross(end_offset) > 0 ? -1 : 1;
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vtx = position + start_offset * dir;
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vtx_builder.AppendVertex(vtx);
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vtx = position + end_offset * dir;
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vtx_builder.AppendVertex(vtx);
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return dir;
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}
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// static
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void StrokePathGeometry::CreateMiterJoin(VertexWriter& vtx_builder,
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const Point& position,
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const Point& start_offset,
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const Point& end_offset,
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Scalar miter_limit,
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Scalar scale) {
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Point start_normal = start_offset.Normalize();
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Point end_normal = end_offset.Normalize();
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// 1 for no joint (straight line), 0 for max joint (180 degrees).
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Scalar alignment = (start_normal.Dot(end_normal) + 1) / 2;
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if (ScalarNearlyEqual(alignment, 1)) {
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return;
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}
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Scalar direction = CreateBevelAndGetDirection(vtx_builder, position,
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start_offset, end_offset);
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Point miter_point = (((start_offset + end_offset) / 2) / alignment);
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if (miter_point.GetDistanceSquared({0, 0}) > miter_limit * miter_limit) {
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return; // Convert to bevel when we exceed the miter limit.
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}
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// Outer miter point.
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VS::PerVertexData vtx;
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vtx.position = position + miter_point * direction;
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vtx_builder.AppendVertex(vtx.position);
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}
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// static
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void StrokePathGeometry::CreateRoundJoin(VertexWriter& vtx_builder,
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const Point& position,
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const Point& start_offset,
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const Point& end_offset,
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Scalar miter_limit,
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Scalar scale) {
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Point start_normal = start_offset.Normalize();
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Point end_normal = end_offset.Normalize();
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// 0 for no joint (straight line), 1 for max joint (180 degrees).
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Scalar alignment = 1 - (start_normal.Dot(end_normal) + 1) / 2;
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if (ScalarNearlyEqual(alignment, 0)) {
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return;
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}
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Scalar direction = CreateBevelAndGetDirection(vtx_builder, position,
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start_offset, end_offset);
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Point middle =
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(start_offset + end_offset).Normalize() * start_offset.GetLength();
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Point middle_normal = middle.Normalize();
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Point middle_handle = middle + Point(-middle.y, middle.x) *
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PathBuilder::kArcApproximationMagic *
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alignment * direction;
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Point start_handle = start_offset + Point(start_offset.y, -start_offset.x) *
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PathBuilder::kArcApproximationMagic *
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alignment * direction;
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VS::PerVertexData vtx;
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CubicPathComponent(start_offset, start_handle, middle_handle, middle)
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.ToLinearPathComponents(scale, [&vtx_builder, direction, &vtx, position,
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middle_normal](const Point& point) {
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vtx.position = position + point * direction;
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vtx_builder.AppendVertex(vtx.position);
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vtx.position = position + (-point * direction).Reflect(middle_normal);
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vtx_builder.AppendVertex(vtx.position);
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});
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}
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// static
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void StrokePathGeometry::CreateBevelJoin(VertexWriter& vtx_builder,
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const Point& position,
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const Point& start_offset,
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const Point& end_offset,
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Scalar miter_limit,
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Scalar scale) {
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CreateBevelAndGetDirection(vtx_builder, position, start_offset, end_offset);
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}
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// static
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StrokePathGeometry::JoinProc StrokePathGeometry::GetJoinProc(Join stroke_join) {
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switch (stroke_join) {
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case Join::kBevel:
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return &StrokePathGeometry::CreateBevelJoin;
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case Join::kMiter:
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return &StrokePathGeometry::CreateMiterJoin;
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case Join::kRound:
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return &StrokePathGeometry::CreateRoundJoin;
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}
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}
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// static
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void StrokePathGeometry::CreateButtCap(VertexWriter& vtx_builder,
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const Point& position,
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const Point& offset,
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Scalar scale,
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bool reverse) {
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Point orientation = offset * (reverse ? -1 : 1);
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VS::PerVertexData vtx;
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vtx.position = position + orientation;
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vtx_builder.AppendVertex(vtx.position);
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vtx.position = position - orientation;
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vtx_builder.AppendVertex(vtx.position);
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}
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// static
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void StrokePathGeometry::CreateRoundCap(VertexWriter& vtx_builder,
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const Point& position,
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const Point& offset,
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Scalar scale,
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bool reverse) {
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Point orientation = offset * (reverse ? -1 : 1);
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Point forward(offset.y, -offset.x);
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Point forward_normal = forward.Normalize();
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CubicPathComponent arc;
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if (reverse) {
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arc = CubicPathComponent(
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forward, forward + orientation * PathBuilder::kArcApproximationMagic,
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orientation + forward * PathBuilder::kArcApproximationMagic,
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orientation);
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} else {
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arc = CubicPathComponent(
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orientation,
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orientation + forward * PathBuilder::kArcApproximationMagic,
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forward + orientation * PathBuilder::kArcApproximationMagic, forward);
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}
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Point vtx = position + orientation;
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vtx_builder.AppendVertex(vtx);
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vtx = position - orientation;
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vtx_builder.AppendVertex(vtx);
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arc.ToLinearPathComponents(scale, [&vtx_builder, &vtx, forward_normal,
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position](const Point& point) {
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vtx = position + point;
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vtx_builder.AppendVertex(vtx);
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vtx = position + (-point).Reflect(forward_normal);
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vtx_builder.AppendVertex(vtx);
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});
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}
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// static
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void StrokePathGeometry::CreateSquareCap(VertexWriter& vtx_builder,
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const Point& position,
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const Point& offset,
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Scalar scale,
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bool reverse) {
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Point orientation = offset * (reverse ? -1 : 1);
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Point forward(offset.y, -offset.x);
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Point vtx = position + orientation;
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vtx_builder.AppendVertex(vtx);
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vtx = position - orientation;
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vtx_builder.AppendVertex(vtx);
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vtx = position + orientation + forward;
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vtx_builder.AppendVertex(vtx);
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vtx = position - orientation + forward;
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vtx_builder.AppendVertex(vtx);
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}
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// static
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StrokePathGeometry::CapProc StrokePathGeometry::GetCapProc(Cap stroke_cap) {
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switch (stroke_cap) {
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case Cap::kButt:
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return &StrokePathGeometry::CreateButtCap;
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case Cap::kRound:
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return &StrokePathGeometry::CreateRoundCap;
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case Cap::kSquare:
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return &StrokePathGeometry::CreateSquareCap;
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}
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}
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template <typename VertexWriter>
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class StrokeGenerator {
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public:
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StrokeGenerator(const Path::Polyline& p_polyline,
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const Scalar p_stroke_width,
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const Scalar p_scaled_miter_limit,
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const StrokePathGeometry::JoinProc& p_join_proc,
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const StrokePathGeometry::CapProc& p_cap_proc,
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const JoinProc<VertexWriter>& p_join_proc,
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const CapProc<VertexWriter>& p_cap_proc,
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const Scalar p_scale)
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: polyline(p_polyline),
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stroke_width(p_stroke_width),
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@ -476,8 +275,8 @@ class StrokeGenerator {
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const Path::Polyline& polyline;
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const Scalar stroke_width;
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const Scalar scaled_miter_limit;
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const StrokePathGeometry::JoinProc& join_proc;
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const StrokePathGeometry::CapProc& cap_proc;
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const JoinProc<VertexWriter>& join_proc;
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const CapProc<VertexWriter>& cap_proc;
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const Scalar scale;
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Point previous_offset;
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@ -485,20 +284,242 @@ class StrokeGenerator {
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SolidFillVertexShader::PerVertexData vtx;
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};
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// static
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void StrokePathGeometry::CreateSolidStrokeVertices(
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VertexWriter& vtx_builder,
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const Path::Polyline& polyline,
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Scalar stroke_width,
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Scalar scaled_miter_limit,
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const StrokePathGeometry::JoinProc& join_proc,
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const CapProc& cap_proc,
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Scalar scale) {
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template <typename VertexWriter>
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void CreateButtCap(VertexWriter& vtx_builder,
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const Point& position,
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const Point& offset,
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Scalar scale,
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bool reverse) {
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Point orientation = offset * (reverse ? -1 : 1);
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VS::PerVertexData vtx;
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vtx.position = position + orientation;
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vtx_builder.AppendVertex(vtx.position);
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vtx.position = position - orientation;
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vtx_builder.AppendVertex(vtx.position);
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}
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template <typename VertexWriter>
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void CreateRoundCap(VertexWriter& vtx_builder,
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const Point& position,
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const Point& offset,
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Scalar scale,
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bool reverse) {
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Point orientation = offset * (reverse ? -1 : 1);
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Point forward(offset.y, -offset.x);
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Point forward_normal = forward.Normalize();
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CubicPathComponent arc;
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if (reverse) {
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arc = CubicPathComponent(
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forward, forward + orientation * PathBuilder::kArcApproximationMagic,
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orientation + forward * PathBuilder::kArcApproximationMagic,
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orientation);
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} else {
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arc = CubicPathComponent(
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orientation,
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orientation + forward * PathBuilder::kArcApproximationMagic,
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forward + orientation * PathBuilder::kArcApproximationMagic, forward);
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}
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Point vtx = position + orientation;
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vtx_builder.AppendVertex(vtx);
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vtx = position - orientation;
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vtx_builder.AppendVertex(vtx);
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arc.ToLinearPathComponents(scale, [&vtx_builder, &vtx, forward_normal,
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position](const Point& point) {
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vtx = position + point;
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vtx_builder.AppendVertex(vtx);
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vtx = position + (-point).Reflect(forward_normal);
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vtx_builder.AppendVertex(vtx);
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});
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}
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template <typename VertexWriter>
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void CreateSquareCap(VertexWriter& vtx_builder,
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const Point& position,
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const Point& offset,
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Scalar scale,
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bool reverse) {
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Point orientation = offset * (reverse ? -1 : 1);
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Point forward(offset.y, -offset.x);
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Point vtx = position + orientation;
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vtx_builder.AppendVertex(vtx);
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vtx = position - orientation;
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vtx_builder.AppendVertex(vtx);
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vtx = position + orientation + forward;
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vtx_builder.AppendVertex(vtx);
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vtx = position - orientation + forward;
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vtx_builder.AppendVertex(vtx);
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}
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template <typename VertexWriter>
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Scalar CreateBevelAndGetDirection(VertexWriter& vtx_builder,
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const Point& position,
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const Point& start_offset,
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const Point& end_offset) {
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Point vtx = position;
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vtx_builder.AppendVertex(vtx);
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Scalar dir = start_offset.Cross(end_offset) > 0 ? -1 : 1;
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vtx = position + start_offset * dir;
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vtx_builder.AppendVertex(vtx);
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vtx = position + end_offset * dir;
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vtx_builder.AppendVertex(vtx);
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return dir;
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}
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template <typename VertexWriter>
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void CreateMiterJoin(VertexWriter& vtx_builder,
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const Point& position,
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const Point& start_offset,
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const Point& end_offset,
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Scalar miter_limit,
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Scalar scale) {
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Point start_normal = start_offset.Normalize();
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Point end_normal = end_offset.Normalize();
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// 1 for no joint (straight line), 0 for max joint (180 degrees).
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Scalar alignment = (start_normal.Dot(end_normal) + 1) / 2;
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if (ScalarNearlyEqual(alignment, 1)) {
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return;
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}
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Scalar direction = CreateBevelAndGetDirection(vtx_builder, position,
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start_offset, end_offset);
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Point miter_point = (((start_offset + end_offset) / 2) / alignment);
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if (miter_point.GetDistanceSquared({0, 0}) > miter_limit * miter_limit) {
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return; // Convert to bevel when we exceed the miter limit.
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}
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// Outer miter point.
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VS::PerVertexData vtx;
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vtx.position = position + miter_point * direction;
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vtx_builder.AppendVertex(vtx.position);
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}
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template <typename VertexWriter>
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void CreateRoundJoin(VertexWriter& vtx_builder,
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const Point& position,
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const Point& start_offset,
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const Point& end_offset,
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Scalar miter_limit,
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Scalar scale) {
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Point start_normal = start_offset.Normalize();
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Point end_normal = end_offset.Normalize();
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// 0 for no joint (straight line), 1 for max joint (180 degrees).
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Scalar alignment = 1 - (start_normal.Dot(end_normal) + 1) / 2;
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if (ScalarNearlyEqual(alignment, 0)) {
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return;
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}
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Scalar direction = CreateBevelAndGetDirection(vtx_builder, position,
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start_offset, end_offset);
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Point middle =
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(start_offset + end_offset).Normalize() * start_offset.GetLength();
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Point middle_normal = middle.Normalize();
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Point middle_handle = middle + Point(-middle.y, middle.x) *
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PathBuilder::kArcApproximationMagic *
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alignment * direction;
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Point start_handle = start_offset + Point(start_offset.y, -start_offset.x) *
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PathBuilder::kArcApproximationMagic *
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alignment * direction;
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VS::PerVertexData vtx;
|
||||
CubicPathComponent(start_offset, start_handle, middle_handle, middle)
|
||||
.ToLinearPathComponents(scale, [&vtx_builder, direction, &vtx, position,
|
||||
middle_normal](const Point& point) {
|
||||
vtx.position = position + point * direction;
|
||||
vtx_builder.AppendVertex(vtx.position);
|
||||
vtx.position = position + (-point * direction).Reflect(middle_normal);
|
||||
vtx_builder.AppendVertex(vtx.position);
|
||||
});
|
||||
}
|
||||
|
||||
template <typename VertexWriter>
|
||||
void CreateBevelJoin(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& start_offset,
|
||||
const Point& end_offset,
|
||||
Scalar miter_limit,
|
||||
Scalar scale) {
|
||||
CreateBevelAndGetDirection(vtx_builder, position, start_offset, end_offset);
|
||||
}
|
||||
|
||||
template <typename VertexWriter>
|
||||
void CreateSolidStrokeVertices(VertexWriter& vtx_builder,
|
||||
const Path::Polyline& polyline,
|
||||
Scalar stroke_width,
|
||||
Scalar scaled_miter_limit,
|
||||
const JoinProc<VertexWriter>& join_proc,
|
||||
const CapProc<VertexWriter>& cap_proc,
|
||||
Scalar scale) {
|
||||
StrokeGenerator stroke_generator(polyline, stroke_width, scaled_miter_limit,
|
||||
join_proc, cap_proc, scale);
|
||||
stroke_generator.Generate(vtx_builder);
|
||||
}
|
||||
|
||||
// static
|
||||
template <typename VertexWriter>
|
||||
JoinProc<VertexWriter> GetJoinProc(Join stroke_join) {
|
||||
switch (stroke_join) {
|
||||
case Join::kBevel:
|
||||
return &CreateBevelJoin<VertexWriter>;
|
||||
case Join::kMiter:
|
||||
return &CreateMiterJoin<VertexWriter>;
|
||||
case Join::kRound:
|
||||
return &CreateRoundJoin<VertexWriter>;
|
||||
}
|
||||
}
|
||||
|
||||
template <typename VertexWriter>
|
||||
CapProc<VertexWriter> GetCapProc(Cap stroke_cap) {
|
||||
switch (stroke_cap) {
|
||||
case Cap::kButt:
|
||||
return &CreateButtCap<VertexWriter>;
|
||||
case Cap::kRound:
|
||||
return &CreateRoundCap<VertexWriter>;
|
||||
case Cap::kSquare:
|
||||
return &CreateSquareCap<VertexWriter>;
|
||||
}
|
||||
}
|
||||
} // namespace
|
||||
|
||||
StrokePathGeometry::StrokePathGeometry(const Path& path,
|
||||
Scalar stroke_width,
|
||||
Scalar miter_limit,
|
||||
Cap stroke_cap,
|
||||
Join stroke_join)
|
||||
: path_(path),
|
||||
stroke_width_(stroke_width),
|
||||
miter_limit_(miter_limit),
|
||||
stroke_cap_(stroke_cap),
|
||||
stroke_join_(stroke_join) {}
|
||||
|
||||
StrokePathGeometry::~StrokePathGeometry() = default;
|
||||
|
||||
Scalar StrokePathGeometry::GetStrokeWidth() const {
|
||||
return stroke_width_;
|
||||
}
|
||||
|
||||
Scalar StrokePathGeometry::GetMiterLimit() const {
|
||||
return miter_limit_;
|
||||
}
|
||||
|
||||
Cap StrokePathGeometry::GetStrokeCap() const {
|
||||
return stroke_cap_;
|
||||
}
|
||||
|
||||
Join StrokePathGeometry::GetStrokeJoin() const {
|
||||
return stroke_join_;
|
||||
}
|
||||
|
||||
GeometryResult StrokePathGeometry::GetPositionBuffer(
|
||||
const ContentContext& renderer,
|
||||
const Entity& entity,
|
||||
@ -521,8 +542,8 @@ GeometryResult StrokePathGeometry::GetPositionBuffer(
|
||||
auto polyline = renderer.GetTessellator()->CreateTempPolyline(path_, scale);
|
||||
CreateSolidStrokeVertices(position_writer, polyline, stroke_width,
|
||||
miter_limit_ * stroke_width_ * 0.5f,
|
||||
GetJoinProc(stroke_join_), GetCapProc(stroke_cap_),
|
||||
scale);
|
||||
GetJoinProc<PositionWriter>(stroke_join_),
|
||||
GetCapProc<PositionWriter>(stroke_cap_), scale);
|
||||
|
||||
BufferView buffer_view =
|
||||
host_buffer.Emplace(position_writer.GetData().data(),
|
||||
@ -566,9 +587,10 @@ GeometryResult StrokePathGeometry::GetPositionUVBuffer(
|
||||
|
||||
PositionUVWriter writer(Point{0, 0}, texture_coverage.GetSize(),
|
||||
effect_transform);
|
||||
CreateSolidStrokeVertices(
|
||||
writer, polyline, stroke_width, miter_limit_ * stroke_width_ * 0.5f,
|
||||
GetJoinProc(stroke_join_), GetCapProc(stroke_cap_), scale);
|
||||
CreateSolidStrokeVertices(writer, polyline, stroke_width,
|
||||
miter_limit_ * stroke_width_ * 0.5f,
|
||||
GetJoinProc<PositionUVWriter>(stroke_join_),
|
||||
GetCapProc<PositionUVWriter>(stroke_cap_), scale);
|
||||
|
||||
BufferView buffer_view = host_buffer.Emplace(
|
||||
writer.GetData().data(),
|
||||
|
||||
@ -9,11 +9,6 @@
|
||||
|
||||
namespace impeller {
|
||||
|
||||
class VertexWriter {
|
||||
public:
|
||||
virtual void AppendVertex(const Point& point) = 0;
|
||||
};
|
||||
|
||||
/// @brief A geometry that is created from a stroked path object.
|
||||
class StrokePathGeometry final : public Geometry {
|
||||
public:
|
||||
@ -33,21 +28,7 @@ class StrokePathGeometry final : public Geometry {
|
||||
|
||||
Join GetStrokeJoin() const;
|
||||
|
||||
using CapProc = std::function<void(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& offset,
|
||||
Scalar scale,
|
||||
bool reverse)>;
|
||||
using JoinProc = std::function<void(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& start_offset,
|
||||
const Point& end_offset,
|
||||
Scalar miter_limit,
|
||||
Scalar scale)>;
|
||||
|
||||
private:
|
||||
using VS = SolidFillVertexShader;
|
||||
|
||||
// |Geometry|
|
||||
GeometryResult GetPositionBuffer(const ContentContext& renderer,
|
||||
const Entity& entity,
|
||||
@ -68,62 +49,6 @@ class StrokePathGeometry final : public Geometry {
|
||||
|
||||
bool SkipRendering() const;
|
||||
|
||||
static Scalar CreateBevelAndGetDirection(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& start_offset,
|
||||
const Point& end_offset);
|
||||
|
||||
static void CreateSolidStrokeVertices(VertexWriter& vtx_builder,
|
||||
const Path::Polyline& path,
|
||||
Scalar stroke_width,
|
||||
Scalar scaled_miter_limit,
|
||||
const JoinProc& join_proc,
|
||||
const CapProc& cap_proc,
|
||||
Scalar scale);
|
||||
|
||||
static StrokePathGeometry::JoinProc GetJoinProc(Join stroke_join);
|
||||
|
||||
static StrokePathGeometry::CapProc GetCapProc(Cap cap);
|
||||
|
||||
static void CreateButtCap(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& offset,
|
||||
Scalar scale,
|
||||
bool reverse);
|
||||
|
||||
static void CreateRoundCap(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& offset,
|
||||
Scalar scale,
|
||||
bool reverse);
|
||||
|
||||
static void CreateSquareCap(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& offset,
|
||||
Scalar scale,
|
||||
bool reverse);
|
||||
|
||||
static void CreateMiterJoin(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& start_offset,
|
||||
const Point& end_offset,
|
||||
Scalar miter_limit,
|
||||
Scalar scale);
|
||||
|
||||
static void CreateRoundJoin(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& start_offset,
|
||||
const Point& end_offset,
|
||||
Scalar miter_limit,
|
||||
Scalar scale);
|
||||
|
||||
static void CreateBevelJoin(VertexWriter& vtx_builder,
|
||||
const Point& position,
|
||||
const Point& start_offset,
|
||||
const Point& end_offset,
|
||||
Scalar miter_limit,
|
||||
Scalar scale);
|
||||
|
||||
Path path_;
|
||||
Scalar stroke_width_;
|
||||
Scalar miter_limit_;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user