2a8ebc4906
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
#pragma once
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#include <mln/gfx/types.hpp>
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#include <cassert>
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#include <cstddef>
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#include <type_traits>
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namespace mln {
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namespace gfx {
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class DrawMode {
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protected:
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DrawMode(DrawModeType type_, float size_)
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: type(type_),
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size(size_) {}
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public:
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const DrawModeType type;
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const float size;
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};
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template <class>
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struct BufferGroupSizeOf;
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template <class>
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struct PrimitiveTypeOf;
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class Points : public DrawMode {
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public:
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explicit Points(float pointSize_)
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: DrawMode(DrawModeType::Points, pointSize_) {
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assert(size > 0);
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}
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};
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template <>
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struct BufferGroupSizeOf<Points> : std::integral_constant<std::size_t, 1> {};
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template <>
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struct PrimitiveTypeOf<Points> : std::integral_constant<PrimitiveType, PrimitiveType::Point> {};
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class Lines : public DrawMode {
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public:
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explicit Lines(float lineWidth_)
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: DrawMode(DrawModeType::Lines, lineWidth_) {
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assert(size > 0);
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}
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};
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template <>
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struct BufferGroupSizeOf<Lines> : std::integral_constant<std::size_t, 2> {};
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template <>
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struct PrimitiveTypeOf<Lines> : std::integral_constant<PrimitiveType, PrimitiveType::Line> {};
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// LineStrip is a form of "Line" rendering, but the element buffer
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// cannot be grouped into logical elements beyond a single Point.
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class LineStrip : public DrawMode {
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public:
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explicit LineStrip(float lineWidth_)
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: DrawMode(DrawModeType::LineStrip, lineWidth_) {
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assert(size > 0);
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}
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};
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template <>
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struct BufferGroupSizeOf<LineStrip> : std::integral_constant<std::size_t, 1> {};
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template <>
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struct PrimitiveTypeOf<LineStrip> : std::integral_constant<PrimitiveType, PrimitiveType::Line> {};
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class Triangles : public DrawMode {
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public:
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explicit Triangles()
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: DrawMode(DrawModeType::Triangles, 0) {}
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};
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template <>
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struct BufferGroupSizeOf<Triangles> : std::integral_constant<std::size_t, 3> {};
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template <>
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struct PrimitiveTypeOf<Triangles> : std::integral_constant<PrimitiveType, PrimitiveType::Triangle> {};
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// TriangleStrip is a form of "Triangle" rendering, but the element buffer
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// cannot be grouped into logical elements beyond a single Point.
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class TriangleStrip : public DrawMode {
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public:
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explicit TriangleStrip()
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: DrawMode(DrawModeType::TriangleStrip, 0) {}
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};
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template <>
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struct BufferGroupSizeOf<TriangleStrip> : std::integral_constant<std::size_t, 1> {};
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template <>
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struct PrimitiveTypeOf<TriangleStrip> : std::integral_constant<PrimitiveType, PrimitiveType::Triangle> {};
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} // namespace gfx
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} // namespace mln
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