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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| #include "export_3d_image.hpp" | ||
| #include "canvas3d/canvas3d_base.hpp" | ||
| #include "GL/osmesa.h" | ||
| #include <cairomm/cairomm.h> | ||
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| namespace horizon { | ||
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| Image3DExporter::Image3DExporter(const class Board &abrd, class Pool &apool, unsigned int awidth, unsigned int aheight) | ||
| : pool(apool) | ||
| { | ||
| width = awidth; | ||
| height = aheight; | ||
|
|
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| { | ||
| std::vector<int> attribs; | ||
| attribs.push_back(OSMESA_DEPTH_BITS); | ||
| attribs.push_back(16); | ||
|
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| attribs.push_back(OSMESA_PROFILE); | ||
| attribs.push_back(OSMESA_CORE_PROFILE); | ||
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| attribs.push_back(OSMESA_CONTEXT_MAJOR_VERSION); | ||
| attribs.push_back(3); | ||
|
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| attribs.push_back(0); | ||
| attribs.push_back(0); | ||
| ctx = OSMesaCreateContextAttribs(attribs.data(), NULL); | ||
| } | ||
| if (!ctx) { | ||
| throw std::runtime_error("couldn't create context"); | ||
| } | ||
| buffer.resize(width * height * 4); | ||
| if (!OSMesaMakeCurrent(static_cast<OSMesaContext>(ctx), buffer.data(), GL_UNSIGNED_BYTE, width, height)) { | ||
| throw std::runtime_error("couldn't make current"); | ||
| } | ||
| a_realize(); | ||
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| brd = &abrd; | ||
| ca.update(*brd); | ||
| prepare_packages(); | ||
| prepare(); | ||
| push(); | ||
| } | ||
|
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| void Image3DExporter::check_ctx() | ||
| { | ||
| if (ctx != OSMesaGetCurrentContext()) { | ||
| throw std::runtime_error("lost context"); | ||
| } | ||
| } | ||
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| void Image3DExporter::load_3d_models() | ||
| { | ||
| check_ctx(); | ||
| clear_3d_models(); | ||
| auto model_filenames = get_model_filenames(pool); | ||
| for (const auto &it : model_filenames) { | ||
| std::cout << "load " << it.first << std::endl; | ||
| load_3d_model(it.first, it.second); | ||
| } | ||
| package_height_max = 0; | ||
| for (const auto &it : face_vertex_buffer) { | ||
| package_height_max = std::max(it.z, package_height_max); | ||
| } | ||
| face_renderer.push(); | ||
| } | ||
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| Cairo::RefPtr<Cairo::Surface> Image3DExporter::render_to_surface() | ||
| { | ||
| check_ctx(); | ||
| render(render_background ? RenderBackground::YES : RenderBackground::NO); | ||
| glFinish(); | ||
|
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| auto buf = buffer.data(); | ||
| unsigned int iwidth = width; | ||
| unsigned int iheight = height; | ||
| auto surf = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, iwidth, iheight); | ||
| unsigned char *data = surf->get_data(); | ||
| for (size_t y = 0; y < iheight; y++) { | ||
| auto offset = (iheight - y - 1) * surf->get_stride(); | ||
| for (size_t x = 0; x < iwidth; x++) { | ||
| auto p = &data[x * 4 + offset]; | ||
| auto pb = &buf[(y * iwidth + x) * 4]; | ||
| p[0] = pb[2]; | ||
| p[1] = pb[1]; | ||
| p[2] = pb[0]; | ||
| p[3] = pb[3]; | ||
| } | ||
| } | ||
| surf->mark_dirty(); | ||
| return surf; | ||
| } | ||
|
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| Image3DExporter::~Image3DExporter() | ||
| { | ||
| OSMesaDestroyContext(static_cast<OSMesaContext>(ctx)); | ||
| } | ||
| } // namespace horizon |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| #pragma once | ||
| #include <string> | ||
| #include <vector> | ||
| #include "canvas3d/canvas3d_base.hpp" | ||
| #include <cairomm/cairomm.h> | ||
|
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| namespace horizon { | ||
|
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| class Image3DExporter : public Canvas3DBase { | ||
| public: | ||
| Image3DExporter(const class Board &brd, class Pool &pool, unsigned int width, unsigned int height); | ||
|
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| void load_3d_models(); | ||
| Cairo::RefPtr<Cairo::Surface> render_to_surface(); | ||
| virtual ~Image3DExporter(); | ||
| bool render_background = false; | ||
|
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| private: | ||
| class Pool &pool; | ||
| void *ctx = nullptr; // to get around including osmesa here | ||
| std::vector<unsigned char> buffer; | ||
| void check_ctx(); | ||
| }; | ||
|
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| } // namespace horizon |
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