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Added function to generated diamond shaped model

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enricoturri1966 2021-08-04 13:58:44 +02:00
parent 93db27f40c
commit c4ec355f41
2 changed files with 53 additions and 0 deletions
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48
src/slic3r/GUI/GLModel.cpp
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@ -597,5 +597,53 @@ GLModel::InitializationData straight_arrow(float tip_width, float tip_height, fl
return data; return data;
} }
GLModel::InitializationData diamond(int resolution)
{
resolution = std::max(4, resolution);
GLModel::InitializationData data;
GLModel::InitializationData::Entity entity;
entity.type = GLModel::PrimitiveType::Triangles;
const float step = 2.0f * float(PI) / float(resolution);
// positions
for (int i = 0; i < resolution; ++i) {
float ii = float(i) * step;
entity.positions.emplace_back(0.5f * ::cos(ii), 0.5f * ::sin(ii), 0.0f);
}
entity.positions.emplace_back(0.0f, 0.0f, 0.5f);
entity.positions.emplace_back(0.0f, 0.0f, -0.5f);
// normals
for (const Vec3f& v : entity.positions) {
entity.normals.emplace_back(v.normalized());
}
// triangles
// top
for (int i = 0; i < resolution; ++i) {
entity.indices.push_back(i + 0);
entity.indices.push_back(i + 1);
entity.indices.push_back(resolution);
}
entity.indices.push_back(resolution - 1);
entity.indices.push_back(0);
entity.indices.push_back(resolution);
// bottom
for (int i = 0; i < resolution; ++i) {
entity.indices.push_back(i + 0);
entity.indices.push_back(resolution + 1);
entity.indices.push_back(i + 1);
}
entity.indices.push_back(resolution - 1);
entity.indices.push_back(resolution + 1);
entity.indices.push_back(0);
data.entities.emplace_back(entity);
return data;
}
} // namespace GUI } // namespace GUI
} // namespace Slic3r } // namespace Slic3r

5
src/slic3r/GUI/GLModel.hpp
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@ -100,6 +100,11 @@ namespace GUI {
// used to render sidebar hints for position and scale // used to render sidebar hints for position and scale
GLModel::InitializationData straight_arrow(float tip_width, float tip_height, float stem_width, float stem_height, float thickness); GLModel::InitializationData straight_arrow(float tip_width, float tip_height, float stem_width, float stem_height, float thickness);
// create a diamond with the given resolution
// the origin of the diamond is in its center
// the diamond is contained into a box with size [1, 1, 1]
GLModel::InitializationData diamond(int resolution);
} // namespace GUI } // namespace GUI
} // namespace Slic3r } // namespace Slic3r