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#include "drape_frontend/area_shape.hpp"
#include "drape_frontend/shader_def.hpp"
#include "drape/attribute_provider.hpp"
#include "drape/batcher.hpp"
#include "drape/glstate.hpp"
#include "drape/texture_manager.hpp"
#include "drape/utils/vertex_decl.hpp"
#include "indexer/map_style_reader.hpp"
#include "base/buffer_vector.hpp"
#include "base/logging.hpp"
#include "std/algorithm.hpp"
namespace df
{
AreaShape::AreaShape(vector<m2::PointD> && triangleList, BuildingOutline && buildingOutline,
AreaViewParams const & params)
: m_vertexes(move(triangleList))
, m_buildingOutline(move(buildingOutline))
, m_params(params)
{}
void AreaShape::Draw(ref_ptr<dp::Batcher> batcher, ref_ptr<dp::TextureManager> textures) const
{
dp::TextureManager::ColorRegion region;
textures->GetColorRegion(m_params.m_color, region);
m2::PointD const colorUv = region.GetTexRect().Center();
m2::PointD outlineUv(0.0, 0.0);
if (m_buildingOutline.m_generateOutline)
{
dp::TextureManager::ColorRegion outlineRegion;
textures->GetColorRegion(m_params.m_outlineColor, outlineRegion);
ASSERT_EQUAL(region.GetTexture(), outlineRegion.GetTexture(), ());
outlineUv = outlineRegion.GetTexRect().Center();
}
if (m_params.m_is3D)
DrawArea3D(batcher, colorUv, outlineUv, region.GetTexture());
else if (m_params.m_hatching)
DrawHatchingArea(batcher, colorUv, region.GetTexture(), textures->GetHatchingTexture());
else
DrawArea(batcher, colorUv, outlineUv, region.GetTexture());
}
void AreaShape::DrawArea(ref_ptr<dp::Batcher> batcher, m2::PointD const & colorUv, m2::PointD const & outlineUv,
ref_ptr<dp::Texture> texture) const
{
glsl::vec2 const uv = glsl::ToVec2(colorUv);
buffer_vector<gpu::AreaVertex, 128> vertexes;
vertexes.resize(m_vertexes.size());
transform(m_vertexes.begin(), m_vertexes.end(), vertexes.begin(), [&uv, this](m2::PointF const & vertex)
{
return gpu::AreaVertex(glsl::vec3(glsl::ToVec2(ConvertToLocal(vertex, m_params.m_tileCenter, kShapeCoordScalar)),
m_params.m_depth), uv);
});
dp::GLState state(gpu::AREA_PROGRAM, dp::GLState::GeometryLayer);
state.SetColorTexture(texture);
dp::AttributeProvider provider(1, static_cast<uint32_t>(vertexes.size()));
provider.InitStream(0, gpu::AreaVertex::GetBindingInfo(), make_ref(vertexes.data()));
batcher->InsertTriangleList(state, make_ref(&provider));
// Generate outline.
if (m_buildingOutline.m_generateOutline && !m_buildingOutline.m_indices.empty())
{
glsl::vec2 const ouv = glsl::ToVec2(outlineUv);
vector<gpu::AreaVertex> vertices;
vertices.reserve(m_buildingOutline.m_vertices.size());
for (size_t i = 0; i < m_buildingOutline.m_vertices.size(); i++)
{
glsl::vec2 const pos = glsl::ToVec2(ConvertToLocal(m_buildingOutline.m_vertices[i],
m_params.m_tileCenter, kShapeCoordScalar));
vertices.emplace_back(gpu::AreaVertex(glsl::vec3(pos, m_params.m_depth), ouv));
}
dp::GLState outlineState(gpu::AREA_OUTLINE_PROGRAM, dp::GLState::GeometryLayer);
outlineState.SetColorTexture(texture);
outlineState.SetDrawAsLine(true);
dp::AttributeProvider outlineProvider(1, static_cast<uint32_t>(vertices.size()));
outlineProvider.InitStream(0, gpu::AreaVertex::GetBindingInfo(), make_ref(vertices.data()));
batcher->InsertLineRaw(outlineState, make_ref(&outlineProvider), m_buildingOutline.m_indices);
}
}
void AreaShape::DrawHatchingArea(ref_ptr<dp::Batcher> batcher, m2::PointD const & colorUv,
ref_ptr<dp::Texture> texture, ref_ptr<dp::Texture> hatchingTexture) const
{
glsl::vec2 const uv = glsl::ToVec2(colorUv);
m2::RectD bbox;
for (auto const & v : m_vertexes)
bbox.Add(v);
double const maxU = bbox.SizeX() * m_params.m_baseGtoPScale / hatchingTexture->GetWidth();
double const maxV = bbox.SizeY() * m_params.m_baseGtoPScale / hatchingTexture->GetHeight();
buffer_vector<gpu::HatchingAreaVertex, 128> vertexes;
vertexes.resize(m_vertexes.size());
for (size_t i = 0; i < m_vertexes.size(); ++i)
{
vertexes[i].m_position = glsl::vec3(glsl::ToVec2(ConvertToLocal(m_vertexes[i], m_params.m_tileCenter,
kShapeCoordScalar)), m_params.m_depth);
vertexes[i].m_colorTexCoord = uv;
vertexes[i].m_maskTexCoord.x = static_cast<float>(maxU * (m_vertexes[i].x - bbox.minX()) / bbox.SizeX());
vertexes[i].m_maskTexCoord.y = static_cast<float>(maxV * (m_vertexes[i].y - bbox.minY()) / bbox.SizeY());
}
dp::GLState state(gpu::HATCHING_AREA_PROGRAM, dp::GLState::GeometryLayer);
state.SetColorTexture(texture);
state.SetMaskTexture(hatchingTexture);
state.SetTextureFilter(gl_const::GLLinear);
dp::AttributeProvider provider(1, static_cast<uint32_t>(vertexes.size()));
provider.InitStream(0, gpu::HatchingAreaVertex::GetBindingInfo(), make_ref(vertexes.data()));
batcher->InsertTriangleList(state, make_ref(&provider));
}
void AreaShape::DrawArea3D(ref_ptr<dp::Batcher> batcher, m2::PointD const & colorUv, m2::PointD const & outlineUv,
ref_ptr<dp::Texture> texture) const
{
ASSERT(!m_buildingOutline.m_indices.empty(), ());
ASSERT(!m_buildingOutline.m_normals.empty(), ());
glsl::vec2 const uv = glsl::ToVec2(colorUv);
vector<gpu::Area3dVertex> vertexes;
vertexes.reserve(m_vertexes.size() + m_buildingOutline.m_normals.size() * 6);
for (size_t i = 0; i < m_buildingOutline.m_normals.size(); i++)
{
int const startIndex = m_buildingOutline.m_indices[i * 2];
int const endIndex = m_buildingOutline.m_indices[i * 2 + 1];
glsl::vec2 const startPt = glsl::ToVec2(ConvertToLocal(m_buildingOutline.m_vertices[startIndex],
m_params.m_tileCenter, kShapeCoordScalar));
glsl::vec2 const endPt = glsl::ToVec2(ConvertToLocal(m_buildingOutline.m_vertices[endIndex],
m_params.m_tileCenter, kShapeCoordScalar));
glsl::vec3 normal(glsl::ToVec2(m_buildingOutline.m_normals[i]), 0.0f);
vertexes.emplace_back(gpu::Area3dVertex(glsl::vec3(startPt, -m_params.m_minPosZ), normal, uv));
vertexes.emplace_back(gpu::Area3dVertex(glsl::vec3(endPt, -m_params.m_minPosZ), normal, uv));
vertexes.emplace_back(gpu::Area3dVertex(glsl::vec3(startPt, -m_params.m_posZ), normal, uv));
vertexes.emplace_back(gpu::Area3dVertex(glsl::vec3(startPt, -m_params.m_posZ), normal, uv));
vertexes.emplace_back(gpu::Area3dVertex(glsl::vec3(endPt, -m_params.m_minPosZ), normal, uv));
vertexes.emplace_back(gpu::Area3dVertex(glsl::vec3(endPt, -m_params.m_posZ), normal, uv));
}
glsl::vec3 const normal(0.0f, 0.0f, -1.0f);
for (auto const & vertex : m_vertexes)
{
glsl::vec2 const pt = glsl::ToVec2(ConvertToLocal(vertex, m_params.m_tileCenter, kShapeCoordScalar));
vertexes.emplace_back(gpu::Area3dVertex(glsl::vec3(pt, -m_params.m_posZ), normal, uv));
}
dp::GLState state(gpu::AREA_3D_PROGRAM, dp::GLState::GeometryLayer);
state.SetColorTexture(texture);
state.SetBlending(dp::Blending(false /* isEnabled */));
dp::AttributeProvider provider(1, static_cast<uint32_t>(vertexes.size()));
provider.InitStream(0, gpu::Area3dVertex::GetBindingInfo(), make_ref(vertexes.data()));
batcher->InsertTriangleList(state, make_ref(&provider));
// Generate outline.
if (m_buildingOutline.m_generateOutline)
{
glsl::vec2 const ouv = glsl::ToVec2(outlineUv);
dp::GLState outlineState(gpu::AREA_3D_OUTLINE_PROGRAM, dp::GLState::GeometryLayer);
outlineState.SetColorTexture(texture);
outlineState.SetBlending(dp::Blending(false /* isEnabled */));
outlineState.SetDrawAsLine(true);
vector<gpu::AreaVertex> vertices;
vertices.reserve(m_buildingOutline.m_vertices.size());
for (size_t i = 0; i < m_buildingOutline.m_vertices.size(); i++)
{
glsl::vec2 const pos = glsl::ToVec2(ConvertToLocal(m_buildingOutline.m_vertices[i],
m_params.m_tileCenter, kShapeCoordScalar));
vertices.emplace_back(gpu::AreaVertex(glsl::vec3(pos, -m_params.m_posZ), ouv));
}
dp::AttributeProvider outlineProvider(1, static_cast<uint32_t>(vertices.size()));
outlineProvider.InitStream(0, gpu::AreaVertex::GetBindingInfo(), make_ref(vertices.data()));
batcher->InsertLineRaw(outlineState, make_ref(&outlineProvider), m_buildingOutline.m_indices);
}
}
} // namespace df
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