1 files changed, 55 insertions, 0 deletions
diff --git a/vcl/inc/opengl/LineRenderUtils.hxx b/vcl/inc/opengl/LineRenderUtils.hxx
new file mode 100644
index 000000000..8d97fa3ee
--- /dev/null
+++ b/vcl/inc/opengl/LineRenderUtils.hxx
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#ifndef INCLUDED_VCL_INC_OPENGL_LINERENDERUTILS_H
+#define INCLUDED_VCL_INC_OPENGL_LINERENDERUTILS_H
+
+#include <opengl/RenderList.hxx>
+
+namespace vcl
+{
+class LineBuilder
+{
+private:
+    std::vector<Vertex>& mrVertices;
+    std::vector<GLuint>& mrIndices;
+    GLubyte mR, mG, mB, mA;
+    GLfloat mfLineWidth;
+    GLfloat mfLineWidthAndAA;
+    size_t mnInitialIndexSize;
+    bool mbIncomplete;
+
+public:
+    LineBuilder(std::vector<Vertex>& rVertices, std::vector<GLuint>& rIndices,
+                Color nColor, GLfloat fTransparency,
+                GLfloat fLineWidth, bool bUseAA);
+
+    void appendLineSegment(const glm::vec2& rPoint1, const glm::vec2& rNormal1, GLfloat aExtrusion1,
+                           const glm::vec2& rPoint2, const glm::vec2& rNormal2, GLfloat aExtrusion2);
+
+    void appendLine(const glm::vec2& rPoint1, const glm::vec2& rPoint2);
+
+    void appendAndConnectLinePoint(const glm::vec2& rPoint, const glm::vec2& aNormal, GLfloat aExtrusion);
+
+    void appendMiterJoint(glm::vec2 const& point, const glm::vec2& prevLineVector,
+                          glm::vec2 const& nextLineVector);
+    void appendBevelJoint(glm::vec2 const& point, const glm::vec2& prevLineVector,
+                          const glm::vec2& nextLineVector);
+    void appendRoundJoint(glm::vec2 const& point, const glm::vec2& prevLineVector,
+                          const glm::vec2& nextLineVector);
+    void appendRoundLineCapVertices(const glm::vec2& rPoint1, const glm::vec2& rPoint2);
+    void appendSquareLineCapVertices(const glm::vec2& rPoint1, const glm::vec2& rPoint2);
+};
+
+} // end vcl
+
+#endif // INCLUDED_VCL_INC_OPENGL_LINERENDERUTILS_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */