#include <cmath>
#include <limits>
+#include "base/debug/trace_event_argument.h"
#include "base/values.h"
#include "ui/gfx/quad_f.h"
#include "ui/gfx/rect.h"
return result;
}
+static HomogeneousCoordinate ProjectHomogeneousPoint(
+ const gfx::Transform& transform,
+ const gfx::PointF& p,
+ bool* clipped) {
+ HomogeneousCoordinate h = ProjectHomogeneousPoint(transform, p);
+ *clipped = h.w() <= 0;
+ return h;
+}
+
static HomogeneousCoordinate MapHomogeneousPoint(
const gfx::Transform& transform,
const gfx::Point3F& p) {
(*num_vertices_in_clipped_quad)++;
}
-gfx::Rect MathUtil::MapClippedRect(const gfx::Transform& transform,
- const gfx::Rect& src_rect) {
+static inline void AddVertexToClippedQuad3d(const gfx::Point3F& new_vertex,
+ gfx::Point3F clipped_quad[8],
+ int* num_vertices_in_clipped_quad) {
+ clipped_quad[*num_vertices_in_clipped_quad] = new_vertex;
+ (*num_vertices_in_clipped_quad)++;
+}
+
+gfx::Rect MathUtil::MapEnclosingClippedRect(const gfx::Transform& transform,
+ const gfx::Rect& src_rect) {
+ if (transform.IsIdentityOrIntegerTranslation()) {
+ return src_rect +
+ gfx::Vector2d(
+ static_cast<int>(SkMScalarToFloat(transform.matrix().get(0, 3))),
+ static_cast<int>(
+ SkMScalarToFloat(transform.matrix().get(1, 3))));
+ }
return gfx::ToEnclosingRect(MapClippedRect(transform, gfx::RectF(src_rect)));
}
return ComputeEnclosingClippedRect(hc0, hc1, hc2, hc3);
}
+gfx::Rect MathUtil::ProjectEnclosingClippedRect(const gfx::Transform& transform,
+ const gfx::Rect& src_rect) {
+ if (transform.IsIdentityOrIntegerTranslation()) {
+ return src_rect +
+ gfx::Vector2d(
+ static_cast<int>(SkMScalarToFloat(transform.matrix().get(0, 3))),
+ static_cast<int>(
+ SkMScalarToFloat(transform.matrix().get(1, 3))));
+ }
+ return gfx::ToEnclosingRect(
+ ProjectClippedRect(transform, gfx::RectF(src_rect)));
+}
+
gfx::RectF MathUtil::ProjectClippedRect(const gfx::Transform& transform,
const gfx::RectF& src_rect) {
if (transform.IsIdentityOrTranslation()) {
DCHECK_LE(*num_vertices_in_clipped_quad, 8);
}
+bool MathUtil::MapClippedQuad3d(const gfx::Transform& transform,
+ const gfx::QuadF& src_quad,
+ gfx::Point3F clipped_quad[8],
+ int* num_vertices_in_clipped_quad) {
+ HomogeneousCoordinate h1 =
+ MapHomogeneousPoint(transform, gfx::Point3F(src_quad.p1()));
+ HomogeneousCoordinate h2 =
+ MapHomogeneousPoint(transform, gfx::Point3F(src_quad.p2()));
+ HomogeneousCoordinate h3 =
+ MapHomogeneousPoint(transform, gfx::Point3F(src_quad.p3()));
+ HomogeneousCoordinate h4 =
+ MapHomogeneousPoint(transform, gfx::Point3F(src_quad.p4()));
+
+ // The order of adding the vertices to the array is chosen so that
+ // clockwise / counter-clockwise orientation is retained.
+
+ *num_vertices_in_clipped_quad = 0;
+
+ if (!h1.ShouldBeClipped()) {
+ AddVertexToClippedQuad3d(
+ h1.CartesianPoint3d(), clipped_quad, num_vertices_in_clipped_quad);
+ }
+
+ if (h1.ShouldBeClipped() ^ h2.ShouldBeClipped()) {
+ AddVertexToClippedQuad3d(
+ ComputeClippedPointForEdge(h1, h2).CartesianPoint3d(),
+ clipped_quad,
+ num_vertices_in_clipped_quad);
+ }
+
+ if (!h2.ShouldBeClipped()) {
+ AddVertexToClippedQuad3d(
+ h2.CartesianPoint3d(), clipped_quad, num_vertices_in_clipped_quad);
+ }
+
+ if (h2.ShouldBeClipped() ^ h3.ShouldBeClipped()) {
+ AddVertexToClippedQuad3d(
+ ComputeClippedPointForEdge(h2, h3).CartesianPoint3d(),
+ clipped_quad,
+ num_vertices_in_clipped_quad);
+ }
+
+ if (!h3.ShouldBeClipped()) {
+ AddVertexToClippedQuad3d(
+ h3.CartesianPoint3d(), clipped_quad, num_vertices_in_clipped_quad);
+ }
+
+ if (h3.ShouldBeClipped() ^ h4.ShouldBeClipped()) {
+ AddVertexToClippedQuad3d(
+ ComputeClippedPointForEdge(h3, h4).CartesianPoint3d(),
+ clipped_quad,
+ num_vertices_in_clipped_quad);
+ }
+
+ if (!h4.ShouldBeClipped()) {
+ AddVertexToClippedQuad3d(
+ h4.CartesianPoint3d(), clipped_quad, num_vertices_in_clipped_quad);
+ }
+
+ if (h4.ShouldBeClipped() ^ h1.ShouldBeClipped()) {
+ AddVertexToClippedQuad3d(
+ ComputeClippedPointForEdge(h4, h1).CartesianPoint3d(),
+ clipped_quad,
+ num_vertices_in_clipped_quad);
+ }
+
+ DCHECK_LE(*num_vertices_in_clipped_quad, 8);
+ return (*num_vertices_in_clipped_quad >= 4);
+}
+
gfx::RectF MathUtil::ComputeEnclosingRectOfVertices(
const gfx::PointF vertices[],
int num_vertices) {
h4.CartesianPoint2d());
}
+gfx::QuadF MathUtil::MapQuad3d(const gfx::Transform& transform,
+ const gfx::QuadF& q,
+ gfx::Point3F* p,
+ bool* clipped) {
+ if (transform.IsIdentityOrTranslation()) {
+ gfx::QuadF mapped_quad(q);
+ mapped_quad +=
+ gfx::Vector2dF(SkMScalarToFloat(transform.matrix().get(0, 3)),
+ SkMScalarToFloat(transform.matrix().get(1, 3)));
+ *clipped = false;
+ p[0] = gfx::Point3F(mapped_quad.p1().x(), mapped_quad.p1().y(), 0.0f);
+ p[1] = gfx::Point3F(mapped_quad.p2().x(), mapped_quad.p2().y(), 0.0f);
+ p[2] = gfx::Point3F(mapped_quad.p3().x(), mapped_quad.p3().y(), 0.0f);
+ p[3] = gfx::Point3F(mapped_quad.p4().x(), mapped_quad.p4().y(), 0.0f);
+ return mapped_quad;
+ }
+
+ HomogeneousCoordinate h1 =
+ MapHomogeneousPoint(transform, gfx::Point3F(q.p1()));
+ HomogeneousCoordinate h2 =
+ MapHomogeneousPoint(transform, gfx::Point3F(q.p2()));
+ HomogeneousCoordinate h3 =
+ MapHomogeneousPoint(transform, gfx::Point3F(q.p3()));
+ HomogeneousCoordinate h4 =
+ MapHomogeneousPoint(transform, gfx::Point3F(q.p4()));
+
+ *clipped = h1.ShouldBeClipped() || h2.ShouldBeClipped() ||
+ h3.ShouldBeClipped() || h4.ShouldBeClipped();
+
+ // Result will be invalid if clipped == true. But, compute it anyway just in
+ // case, to emulate existing behavior.
+ p[0] = h1.CartesianPoint3d();
+ p[1] = h2.CartesianPoint3d();
+ p[2] = h3.CartesianPoint3d();
+ p[3] = h4.CartesianPoint3d();
+
+ return gfx::QuadF(h1.CartesianPoint2d(),
+ h2.CartesianPoint2d(),
+ h3.CartesianPoint2d(),
+ h4.CartesianPoint2d());
+}
+
gfx::PointF MathUtil::MapPoint(const gfx::Transform& transform,
const gfx::PointF& p,
bool* clipped) {
gfx::PointF MathUtil::ProjectPoint(const gfx::Transform& transform,
const gfx::PointF& p,
bool* clipped) {
- HomogeneousCoordinate h = ProjectHomogeneousPoint(transform, p);
-
- if (h.w() > 0) {
- // The cartesian coordinates will be valid in this case.
- *clipped = false;
- return h.CartesianPoint2d();
- }
-
- // The cartesian coordinates will be invalid after dividing by w.
- *clipped = true;
-
+ HomogeneousCoordinate h = ProjectHomogeneousPoint(transform, p, clipped);
// Avoid dividing by w if w == 0.
if (!h.w())
return gfx::PointF();
- // This return value will be invalid because clipped == true, but (1) users of
+ // This return value will be invalid if clipped == true, but (1) users of
// this code should be ignoring the return value when clipped == true anyway,
// and (2) this behavior is more consistent with existing behavior of WebKit
// transforms if the user really does not ignore the return value.
return h.CartesianPoint2d();
}
+gfx::Point3F MathUtil::ProjectPoint3D(const gfx::Transform& transform,
+ const gfx::PointF& p,
+ bool* clipped) {
+ HomogeneousCoordinate h = ProjectHomogeneousPoint(transform, p, clipped);
+ if (!h.w())
+ return gfx::Point3F();
+ return h.CartesianPoint3d();
+}
+
gfx::RectF MathUtil::ScaleRectProportional(const gfx::RectF& input_outer_rect,
const gfx::RectF& scale_outer_rect,
const gfx::RectF& scale_inner_rect) {
return output_inner_rect;
}
+static inline bool NearlyZero(double value) {
+ return std::abs(value) < std::numeric_limits<double>::epsilon();
+}
+
static inline float ScaleOnAxis(double a, double b, double c) {
- if (!b && !c)
- return a;
- if (!a && !c)
- return b;
- if (!a && !b)
- return c;
+ if (NearlyZero(b) && NearlyZero(c))
+ return std::abs(a);
+ if (NearlyZero(a) && NearlyZero(c))
+ return std::abs(b);
+ if (NearlyZero(a) && NearlyZero(b))
+ return std::abs(c);
// Do the sqrt as a double to not lose precision.
return static_cast<float>(std::sqrt(a * a + b * b + c * c));
projected_length * destination.y());
}
-scoped_ptr<base::Value> MathUtil::AsValue(gfx::Size s) {
- scoped_ptr<base::DictionaryValue> res(new base::DictionaryValue());
- res->SetDouble("width", s.width());
- res->SetDouble("height", s.height());
- return res.PassAs<base::Value>();
-}
-
-scoped_ptr<base::Value> MathUtil::AsValue(const gfx::SizeF& s) {
+scoped_ptr<base::Value> MathUtil::AsValue(const gfx::Size& s) {
scoped_ptr<base::DictionaryValue> res(new base::DictionaryValue());
res->SetDouble("width", s.width());
res->SetDouble("height", s.height());
return res.PassAs<base::Value>();
}
-scoped_ptr<base::Value> MathUtil::AsValue(const gfx::QuadF& q) {
- scoped_ptr<base::ListValue> res(new base::ListValue());
+void MathUtil::AddToTracedValue(const gfx::Size& s,
+ base::debug::TracedValue* res) {
+ res->SetDouble("width", s.width());
+ res->SetDouble("height", s.height());
+}
+
+void MathUtil::AddToTracedValue(const gfx::SizeF& s,
+ base::debug::TracedValue* res) {
+ res->SetDouble("width", s.width());
+ res->SetDouble("height", s.height());
+}
+
+void MathUtil::AddToTracedValue(const gfx::Rect& r,
+ base::debug::TracedValue* res) {
+ res->AppendInteger(r.x());
+ res->AppendInteger(r.y());
+ res->AppendInteger(r.width());
+ res->AppendInteger(r.height());
+}
+
+void MathUtil::AddToTracedValue(const gfx::PointF& pt,
+ base::debug::TracedValue* res) {
+ res->AppendDouble(pt.x());
+ res->AppendDouble(pt.y());
+}
+
+void MathUtil::AddToTracedValue(const gfx::Point3F& pt,
+ base::debug::TracedValue* res) {
+ res->AppendDouble(pt.x());
+ res->AppendDouble(pt.y());
+ res->AppendDouble(pt.z());
+}
+
+void MathUtil::AddToTracedValue(const gfx::Vector2d& v,
+ base::debug::TracedValue* res) {
+ res->AppendInteger(v.x());
+ res->AppendInteger(v.y());
+}
+
+void MathUtil::AddToTracedValue(const gfx::Vector2dF& v,
+ base::debug::TracedValue* res) {
+ res->AppendDouble(v.x());
+ res->AppendDouble(v.y());
+}
+
+void MathUtil::AddToTracedValue(const gfx::QuadF& q,
+ base::debug::TracedValue* res) {
res->AppendDouble(q.p1().x());
res->AppendDouble(q.p1().y());
res->AppendDouble(q.p2().x());
res->AppendDouble(q.p3().y());
res->AppendDouble(q.p4().x());
res->AppendDouble(q.p4().y());
- return res.PassAs<base::Value>();
}
-scoped_ptr<base::Value> MathUtil::AsValue(const gfx::RectF& rect) {
- scoped_ptr<base::ListValue> res(new base::ListValue());
+void MathUtil::AddToTracedValue(const gfx::RectF& rect,
+ base::debug::TracedValue* res) {
res->AppendDouble(rect.x());
res->AppendDouble(rect.y());
res->AppendDouble(rect.width());
res->AppendDouble(rect.height());
- return res.PassAs<base::Value>();
}
-scoped_ptr<base::Value> MathUtil::AsValue(const gfx::Transform& transform) {
- scoped_ptr<base::ListValue> res(new base::ListValue());
+void MathUtil::AddToTracedValue(const gfx::Transform& transform,
+ base::debug::TracedValue* res) {
const SkMatrix44& m = transform.matrix();
for (int row = 0; row < 4; ++row) {
for (int col = 0; col < 4; ++col)
res->AppendDouble(m.getDouble(row, col));
}
- return res.PassAs<base::Value>();
}
-scoped_ptr<base::Value> MathUtil::AsValue(const gfx::BoxF& box) {
- scoped_ptr<base::ListValue> res(new base::ListValue());
+void MathUtil::AddToTracedValue(const gfx::BoxF& box,
+ base::debug::TracedValue* res) {
res->AppendInteger(box.x());
res->AppendInteger(box.y());
res->AppendInteger(box.z());
res->AppendInteger(box.width());
res->AppendInteger(box.height());
res->AppendInteger(box.depth());
- return res.PassAs<base::Value>();
}
-scoped_ptr<base::Value> MathUtil::AsValueSafely(double value) {
- return scoped_ptr<base::Value>(base::Value::CreateDoubleValue(
- std::min(value, std::numeric_limits<double>::max())));
+double MathUtil::AsDoubleSafely(double value) {
+ return std::min(value, std::numeric_limits<double>::max());
}
-scoped_ptr<base::Value> MathUtil::AsValueSafely(float value) {
- return scoped_ptr<base::Value>(base::Value::CreateDoubleValue(
- std::min(value, std::numeric_limits<float>::max())));
+float MathUtil::AsFloatSafely(float value) {
+ return std::min(value, std::numeric_limits<float>::max());
}
} // namespace cc
projects / platform / framework / web / crosswalk.git / blobdiff