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#include "wireframe-mesh.hpp"
#include "shaders/tile-shader.hpp"
#include <Corrade/Containers/Array.h>
#include <Magnum/ImageView.h>
#include <Magnum/GL/TextureFormat.h>
#include <Magnum/PixelFormat.h>
#include <Magnum/Trade/ImageData.h>
namespace Magnum::Examples::wireframe_traits {
GL::RectangleTexture wireframe_traits::null::make_constant_texture()
{
Trade::ImageData2D img{PixelFormat::RGBA8UI, {1, 1}, // NOLINT(misc-const-correctness)
Containers::Array<char>{Corrade::DirectInit, 4, (char)(unsigned char)255}};
GL::RectangleTexture tex;
tex.setWrapping(GL::SamplerWrapping::Repeat)
.setMagnificationFilter(GL::SamplerFilter::Nearest)
.setMinificationFilter(GL::SamplerFilter::Nearest)
.setMaxAnisotropy(0)
.setStorage(GL::textureFormat(img.format()), img.size())
.setSubImage({}, std::move(img));
return tex;
}
quad::vertex_array quad::make_vertex_positions_array() const
{
constexpr auto X = TILE_SIZE[0], Y = TILE_SIZE[1];
constexpr float Z = 0;
return {{
{ -X + center[0], -Y + center[1], Z + center[2] },
{ X + center[0], -Y + center[1], Z + center[2] },
{ X + center[0], Y + center[1], Z + center[2] },
{ -X + center[0], Y + center[1], Z + center[2] },
}};
}
quad::quad(Vector3 center, Vector2 size) : center(center), size(size) {}
} // namespace Magnum::Examples::wireframe_traits
namespace Magnum::Examples {
using wireframe_traits::traits;
template <traits T> wireframe_mesh<T>::wireframe_mesh()
{
_mesh.setCount((int)T::num_vertices)
.addVertexBuffer(_texcoords_buffer, 0, tile_shader::TextureCoordinates{})
.addVertexBuffer(_positions_buffer, 0, tile_shader::Position{});
if constexpr(T::num_indices > 0)
_mesh.setIndexBuffer(_index_buffer, 0, GL::MeshIndexType::UnsignedShort);
CORRADE_INTERNAL_ASSERT(T::num_indices > 0 == _mesh.isIndexed());
};
template <traits T> void wireframe_mesh<T>::draw(tile_shader& shader, T x)
{
_positions_buffer.setData(x.make_vertex_positions_array(), GL::BufferUsage::DynamicDraw);
if constexpr(T::num_indices > 0)
_index_buffer.setData(x.make_index_array(), GL::BufferUsage::DynamicDraw);
shader.draw(_mesh);
}
template struct wireframe_mesh<wireframe_traits::null>;
template struct wireframe_mesh<wireframe_traits::quad>;
} // namespace Magnum::Examples
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