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Fr4nz D13trich 2025-11-22 13:58:55 +01:00
parent 4af19165ec
commit 68073add76
12458 changed files with 12350765 additions and 2 deletions
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69
libs/drape_frontend/path_symbol_shape.cpp Normal file
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#include "drape_frontend/path_symbol_shape.hpp"
#include "drape_frontend/render_state_extension.hpp"
#include "drape_frontend/visual_params.hpp"
#include "shaders/programs.hpp"
#include "drape/attribute_provider.hpp"
#include "drape/batcher.hpp"
#include "drape/glsl_func.hpp"
#include "drape/glsl_types.hpp"
#include "drape/overlay_handle.hpp"
#include "drape/texture_manager.hpp"
#include "drape/utils/vertex_decl.hpp"
namespace df
{
PathSymbolShape::PathSymbolShape(m2::SharedSpline const & spline, PathSymbolViewParams const & params)
: m_params(params)
, m_spline(spline)
{}
void PathSymbolShape::Draw(ref_ptr<dp::GraphicsContext> context, ref_ptr<dp::Batcher> batcher,
ref_ptr<dp::TextureManager> textures) const
{
dp::TextureManager::SymbolRegion region;
textures->GetSymbolRegion(m_params.m_symbolName, region);
m2::RectF const & rect = region.GetTexRect();
auto const lt = glsl::ToVec2(rect.LeftTop());
auto const lb = glsl::ToVec2(rect.LeftBottom());
auto const rt = glsl::ToVec2(rect.RightTop());
auto const rb = glsl::ToVec2(rect.RightBottom());
m2::PointF const halfPxSize = region.GetPixelSize() * 0.5f;
gpu::VBUnknownSizeT<gpu::SolidTexturingVertex> buffer;
m2::Spline::iterator splineIter = m_spline.CreateIterator();
double pToGScale = 1.0 / m_params.m_baseGtoPScale;
splineIter.Advance(m_params.m_offset * pToGScale);
auto const step = static_cast<float>(m_params.m_step * pToGScale);
while (!splineIter.BeginAgain())
{
glsl::vec4 const pivot(glsl::ToVec2(ConvertToLocal(splineIter.m_pos, m_params.m_tileCenter, kShapeCoordScalar)),
m_params.m_depth, 0.0f);
glsl::vec2 const n = halfPxSize.y * glsl::normalize(glsl::vec2(-splineIter.m_dir.y, splineIter.m_dir.x));
glsl::vec2 const d = halfPxSize.x * glsl::normalize(glsl::vec2(splineIter.m_dir.x, splineIter.m_dir.y));
buffer.emplace_back(pivot, -d - n, lt);
buffer.emplace_back(pivot, -d + n, lb);
buffer.emplace_back(pivot, d - n, rt);
buffer.emplace_back(pivot, d + n, rb);
splineIter.Advance(step);
}
if (buffer.empty())
return;
auto state = CreateRenderState(gpu::Program::PathSymbol, DepthLayer::GeometryLayer);
state.SetColorTexture(region.GetTexture());
state.SetDepthTestEnabled(m_params.m_depthTestEnabled);
state.SetTextureIndex(region.GetTextureIndex());
dp::AttributeProvider provider(1, static_cast<uint32_t>(buffer.size()));
provider.InitStream(0, gpu::SolidTexturingVertex::GetBindingInfo(), make_ref(buffer.data()));
batcher->InsertListOfStrip(context, state, make_ref(&provider), 4);
}
} // namespace df