1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
// Copyright 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/resources/layer_quad.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/geometry/quad_f.h"
namespace cc {
namespace {
TEST(LayerQuadTest, QuadFConversion) {
gfx::PointF p1(-0.5f, -0.5f);
gfx::PointF p2(0.5f, -0.5f);
gfx::PointF p3(0.5f, 0.5f);
gfx::PointF p4(-0.5f, 0.5f);
gfx::QuadF quad_cw(p1, p2, p3, p4);
LayerQuad layer_quad_cw(quad_cw);
EXPECT_EQ(layer_quad_cw.ToQuadF(), quad_cw);
gfx::QuadF quad_ccw(p1, p4, p3, p2);
LayerQuad layer_quad_ccw(quad_ccw);
EXPECT_EQ(layer_quad_ccw.ToQuadF(), quad_ccw);
}
TEST(LayerQuadTest, Inflate) {
gfx::PointF p1(-0.5f, -0.5f);
gfx::PointF p2(0.5f, -0.5f);
gfx::PointF p3(0.5f, 0.5f);
gfx::PointF p4(-0.5f, 0.5f);
gfx::QuadF quad(p1, p2, p3, p4);
LayerQuad layer_quad(quad);
quad.Scale(2.f, 2.f);
layer_quad.Inflate(0.5f);
EXPECT_EQ(layer_quad.ToQuadF(), quad);
}
TEST(LayerQuadTest, Degenerate) {
gfx::QuadF quad;
gfx::PointF p1(1.0f, 1.0f);
gfx::PointF p2(0.0f, 1.0f);
gfx::PointF p3(1.0f, 0.0f);
gfx::QuadF triangle(p1, p2, p3, p1);
LayerQuad::Edge e1d(p1, p1);
LayerQuad::Edge e2d(p2, p2);
LayerQuad::Edge e2(p1, p2);
LayerQuad::Edge e3(p2, p3);
LayerQuad::Edge e4(p3, p1);
EXPECT_TRUE(e1d.degenerate());
EXPECT_TRUE(e2d.degenerate());
EXPECT_FALSE(e2.degenerate());
EXPECT_FALSE(e3.degenerate());
EXPECT_FALSE(e4.degenerate());
LayerQuad degenerate_quad(e1d, e2d, e2, e3);
// With more than one degenerate edge, we expect the quad to be zero.
EXPECT_EQ(quad, degenerate_quad.ToQuadF());
LayerQuad triangle_quad(e1d, e2, e3, e4);
// With only one degenerate edge, we expect the quad to be a triangle.
EXPECT_EQ(triangle, triangle_quad.ToQuadF());
}
} // namespace
} // namespace cc
|
