voxcity.simulator_gpu.solar.raytracing.RayTracer
================================================

.. py:class:: voxcity.simulator_gpu.solar.raytracing.RayTracer(domain)

   GPU-accelerated ray tracer for radiation calculations.

   Traces rays through the voxel domain to compute:
   - Shadow factors (direct sunlight blocking)
   - Sky view factors (visible sky fraction)
   - Canopy sink factors (absorption by vegetation)


   .. py:attribute:: domain


   .. py:attribute:: nx


   .. py:attribute:: ny


   .. py:attribute:: nz


   .. py:attribute:: dx


   .. py:attribute:: dy


   .. py:attribute:: dz


   .. py:attribute:: max_dist


   .. py:attribute:: ext_coef
      :value: 0.6



   .. py:method:: compute_direct_shadows(surf_pos: ti.template(), surf_dir: ti.template(), sun_dir: ti.types.vector(3, ti.f32), is_solid: ti.template(), n_surf: taichi.i32, shadow_factor: ti.template())

      Compute shadow factors for all surfaces.

      shadow_factor = 0 means fully sunlit
      shadow_factor = 1 means fully shaded



   .. py:method:: compute_direct_with_canopy(surf_pos: ti.template(), surf_dir: ti.template(), sun_dir: ti.types.vector(3, ti.f32), is_solid: ti.template(), lad: ti.template(), n_surf: taichi.i32, shadow_factor: ti.template(), canopy_transmissivity: ti.template())

      Compute shadow factors including canopy absorption.