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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
#include "drape_frontend/arrow3d.hpp"
#include "drape_frontend/color_constants.hpp"
#include "drape_frontend/visual_params.hpp"
#include "drape/glconstants.hpp"
#include "drape/glextensions_list.hpp"
#include "drape/glfunctions.hpp"
#include "drape/glsl_func.hpp"
#include "drape/glsl_types.hpp"
#include "drape/glstate.hpp"
#include "drape/gpu_program_manager.hpp"
#include "drape/shader_def.hpp"
#include "drape/texture_manager.hpp"
#include "drape/uniform_values_storage.hpp"
#include "indexer/map_style_reader.hpp"
#include "indexer/scales.hpp"
#include "geometry/screenbase.hpp"
namespace df
{
double const kArrowSize = 12.0;
double const kArrow3dScaleMin = 1.0;
double const kArrow3dScaleMax = 2.2;
double const kArrow3dMinZoom = 16;
int constexpr kComponentsInVertex = 4;
Arrow3d::Arrow3d()
: m_state(gpu::ARROW_3D_PROGRAM, dp::GLState::OverlayLayer)
{
m_vertices = {
0.0f, 0.0f, -1.0f, 1.0f, -1.2f, -1.0f, 0.0f, 1.0f, 0.0f, 2.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f, 1.0f, 0.0f, 2.0f, 0.0f, 1.0f, 1.2f, -1.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f, 1.0f, 0.0f, -0.5f, 0.0f, 1.0f, -1.2f, -1.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f, 1.0f, 1.2f, -1.0f, 0.0f, 1.0f, 0.0f, -0.5f, 0.0f, 1.0f,
0.0f, 2.27f, 0.0f, 0.0f, 1.4f, -1.17f, 0.0f, 0.0f, 0.0f, 2.0f, 0.0f, 1.0f,
0.0f, 2.0f, 0.0f, 1.0f, 1.4f, -1.17f, 0.0f, 0.0f, 1.2f, -1.0f, 0.0f, 1.0f,
0.0f, 2.27f, 0.0f, 0.0f, 0.0f, 2.0f, 0.0f, 1.0f, -1.4f, -1.17f, 0.0f, 0.0f,
0.0f, 2.0f, 0.0f, 1.0f, -1.2f, -1.0f, 0.0f, 1.0f, -1.4f, -1.17f, 0.0f, 0.0f,
1.2f, -1.0f, 0.0f, 1.0f, 1.4f, -1.17f, 0.0f, 0.0f, 0.0f, -0.67f, 0.0f, 0.0f,
0.0f, -0.5f, 0.0f, 1.0f, 1.2f, -1.0f, 0.0f, 1.0f, 0.0f, -0.67f, 0.0f, 0.0f,
-1.2f, -1.0f, 0.0f, 1.0f, 0.0f, -0.67f, 0.0f, 0.0f, -1.4f, -1.17f, 0.0f, 0.0f,
0.0f, -0.5f, 0.0f, 1.0f, 0.0f, -0.67f, 0.0f, 0.0f, -1.2f, -1.0f, 0.0f, 1.0f,
};
int constexpr kVerticesInRow = 12;
m_normals.reserve(m_vertices.size());
for (size_t triangle = 0; triangle < m_vertices.size() / kVerticesInRow; ++triangle)
{
glsl::vec4 v[3];
for (size_t vertex = 0; vertex < 3; ++vertex)
{
size_t const offset = triangle * kVerticesInRow + vertex * kComponentsInVertex;
v[vertex] = glsl::vec4(m_vertices[offset], m_vertices[offset + 1],
m_vertices[offset + 2], m_vertices[offset + 3]);
}
glsl::vec3 normal = glsl::cross(glsl::vec3(v[1].x - v[0].x, v[1].y - v[0].y, v[1].z - v[0].z),
glsl::vec3(v[2].x - v[0].x, v[2].y - v[0].y, v[2].z - v[0].z));
normal = glsl::normalize(normal);
for (size_t vertex = 0; vertex < 3; ++vertex)
{
m_normals.push_back(normal.x);
m_normals.push_back(normal.y);
m_normals.push_back(normal.z);
}
}
}
Arrow3d::~Arrow3d()
{
if (m_bufferId != 0)
GLFunctions::glDeleteBuffer(m_bufferId);
if (m_bufferNormalsId != 0)
GLFunctions::glDeleteBuffer(m_bufferNormalsId);
}
void Arrow3d::SetPosition(const m2::PointD & position)
{
m_position = position;
}
void Arrow3d::SetAzimuth(double azimuth)
{
m_azimuth = azimuth;
}
void Arrow3d::SetTexture(ref_ptr<dp::TextureManager> texMng)
{
m_state.SetColorTexture(texMng->GetSymbolsTexture());
}
void Arrow3d::Build()
{
m_bufferId = GLFunctions::glGenBuffer();
GLFunctions::glBindBuffer(m_bufferId, gl_const::GLArrayBuffer);
GLFunctions::glBufferData(gl_const::GLArrayBuffer, m_vertices.size() * sizeof(m_vertices[0]),
m_vertices.data(), gl_const::GLStaticDraw);
m_bufferNormalsId = GLFunctions::glGenBuffer();
GLFunctions::glBindBuffer(m_bufferNormalsId, gl_const::GLArrayBuffer);
GLFunctions::glBufferData(gl_const::GLArrayBuffer, m_normals.size() * sizeof(m_normals[0]),
m_normals.data(), gl_const::GLStaticDraw);
GLFunctions::glBindBuffer(0, gl_const::GLArrayBuffer);
}
void Arrow3d::SetPositionObsolete(bool obsolete)
{
m_obsoletePosition = obsolete;
}
void Arrow3d::Render(ScreenBase const & screen, int zoomLevel, ref_ptr<dp::GpuProgramManager> mng)
{
// Unbind current VAO, because glVertexAttributePointer and glEnableVertexAttribute can affect it.
if (dp::GLExtensionsList::Instance().IsSupported(dp::GLExtensionsList::VertexArrayObject))
GLFunctions::glBindVertexArray(0);
if (!m_isInitialized)
{
Build();
m_isInitialized = true;
}
// Render shadow.
if (screen.isPerspective())
{
ref_ptr<dp::GpuProgram> shadowProgram = mng->GetProgram(gpu::ARROW_3D_SHADOW_PROGRAM);
RenderArrow(screen, shadowProgram, dp::Color(60, 60, 60, 60), 0.05f, false /* hasNormals */);
}
// Render arrow.
ref_ptr<dp::GpuProgram> arrowProgram = mng->GetProgram(gpu::ARROW_3D_PROGRAM);
dp::Color const color = df::GetColorConstant(GetStyleReader().GetCurrentStyle(),
m_obsoletePosition ? df::Arrow3DObsolete : df::Arrow3D);
RenderArrow(screen, arrowProgram, color, 0.0f, true /* hasNormals */);
arrowProgram->Unbind();
GLFunctions::glBindBuffer(0, gl_const::GLArrayBuffer);
}
void Arrow3d::RenderArrow(ScreenBase const & screen, ref_ptr<dp::GpuProgram> program,
dp::Color const & color, float dz, bool hasNormals)
{
program->Bind();
GLFunctions::glBindBuffer(m_bufferId, gl_const::GLArrayBuffer);
uint32_t const attributePosition = program->GetAttributeLocation("a_pos");
ASSERT_NOT_EQUAL(attributePosition, -1, ());
GLFunctions::glEnableVertexAttribute(attributePosition);
GLFunctions::glVertexAttributePointer(attributePosition, kComponentsInVertex,
gl_const::GLFloatType, false, 0, 0);
if (hasNormals)
{
GLFunctions::glBindBuffer(m_bufferNormalsId, gl_const::GLArrayBuffer);
uint32_t const attributeNormal = program->GetAttributeLocation("a_normal");
ASSERT_NOT_EQUAL(attributeNormal, -1, ());
GLFunctions::glEnableVertexAttribute(attributeNormal);
GLFunctions::glVertexAttributePointer(attributeNormal, 3, gl_const::GLFloatType, false, 0, 0);
}
dp::UniformValuesStorage uniforms;
math::Matrix<float, 4, 4> const modelTransform = CalculateTransform(screen, dz);
uniforms.SetMatrix4x4Value("u_transform", modelTransform.m_data);
glsl::vec4 const c = glsl::ToVec4(color);
uniforms.SetFloatValue("u_color", c.r, c.g, c.b, c.a);
dp::ApplyState(m_state, program);
dp::ApplyUniforms(uniforms, program);
GLFunctions::glDrawArrays(gl_const::GLTriangles, 0, m_vertices.size() / kComponentsInVertex);
}
math::Matrix<float, 4, 4> Arrow3d::CalculateTransform(ScreenBase const & screen, float dz) const
{
double arrowScale = VisualParams::Instance().GetVisualScale() * kArrowSize;
if (screen.isPerspective())
{
double const t = GetNormalizedZoomLevel(screen.GetScale(), kArrow3dMinZoom);
arrowScale *= (kArrow3dScaleMin * (1.0 - t) + kArrow3dScaleMax * t);
}
double const scaleX = arrowScale * 2.0 / screen.PixelRect().SizeX();
double const scaleY = arrowScale * 2.0 / screen.PixelRect().SizeY();
double const scaleZ = screen.isPerspective() ? (0.002 * screen.GetDepth3d()) : 1.0;
m2::PointD const pos = screen.GtoP(m_position);
double const dX = 2.0 * pos.x / screen.PixelRect().SizeX() - 1.0;
double const dY = 2.0 * pos.y / screen.PixelRect().SizeY() - 1.0;
math::Matrix<float, 4, 4> scaleM = math::Identity<float, 4>();
scaleM(0, 0) = scaleX;
scaleM(1, 1) = scaleY;
scaleM(2, 2) = scaleZ;
math::Matrix<float, 4, 4> rotateM = math::Identity<float, 4>();
rotateM(0, 0) = cos(m_azimuth + screen.GetAngle());
rotateM(0, 1) = -sin(m_azimuth + screen.GetAngle());
rotateM(1, 0) = -rotateM(0, 1);
rotateM(1, 1) = rotateM(0, 0);
math::Matrix<float, 4, 4> translateM = math::Identity<float, 4>();
translateM(3, 0) = dX;
translateM(3, 1) = -dY;
translateM(3, 2) = dz;
math::Matrix<float, 4, 4> modelTransform = rotateM * scaleM * translateM;
if (screen.isPerspective())
return modelTransform * math::Matrix<float, 4, 4>(screen.Pto3dMatrix());
return modelTransform;
}
} // namespace df
|
