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Thirdparty/Pangolin/include/pangolin/geometry/glgeometry.h

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+/* This file is part of the Pangolin Project.
+ * http://github.com/stevenlovegrove/Pangolin
+ *
+ * Copyright (c) 2014 Steven Lovegrove
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+#include <pangolin/geometry/geometry.h>
+#include <pangolin/gl/gl.h>
+#include <pangolin/gl/glsl.h>
+
+namespace pangolin {
+
+struct GlGeometry
+{
+    GlGeometry() = default;
+    GlGeometry(GlGeometry&&) = default;
+    GlGeometry& operator=(GlGeometry&&) = default;
+
+    struct Element : public GlBufferData
+    {
+        Element() = default;
+        Element(Element&&) = default;
+        Element& operator=(Element&&) = default;
+
+        Element(GlBufferType buffer_type, size_t size_bytes, GLenum gluse, uint8_t* data)
+            : GlBufferData(buffer_type, size_bytes, gluse, data)
+        {}
+
+        inline bool HasAttribute(const std::string& name) const {
+            return attributes.find(name) != attributes.end();
+        }
+
+        struct Attribute {
+            // Stuff needed by glVertexAttribPointer
+            GLenum gltype;
+            size_t count_per_element;
+            size_t num_elements;
+            size_t offset;
+            size_t stride_bytes;
+        };
+        std::map<std::string, Attribute> attributes;
+    };
+
+    inline bool HasAttribute(const std::string& name) const
+    {
+        for(const auto& b : buffers) if(b.second.HasAttribute(name)) return true;
+        return false;
+    }
+
+    // Store vertices and attributes
+    std::map<std::string, Element> buffers;
+    // Stores index buffers for each sub-object
+    std::multimap<std::string, Element> objects;
+    // Stores pixmaps
+    std::map<std::string, GlTexture> textures;
+};
+
+GlGeometry::Element ToGlGeometry(const Geometry::Element& el, GlBufferType buffertype);
+
+GlGeometry ToGlGeometry(const Geometry& geom);
+
+void GlDraw(GlSlProgram& prog, const GlGeometry& geom, const GlTexture *matcap);
+
+}