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50422a1165
Introducting MDAL, QgsMeshLayer, mesh data providers (mesh_memory, mdal) to read and visualize raw meshes: vertices and faces. Support dragging 2dm files from browser on canvas to visualize 2dm meshes. Support for QgsMeshLayer in Python API.
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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MDAL - Mesh Data Abstraction Library (MIT License)
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Copyright (C) 2018 Peter Petrik (zilolv at gmail dot com)
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*/
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#ifndef MDAL_H
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#define MDAL_H
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#ifdef MDAL_STATIC
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# define MDAL_EXPORT
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#else
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# if defined _WIN32 || defined __CYGWIN__
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# ifdef mdal_EXPORTS
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# ifdef __GNUC__
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# define MDAL_EXPORT __attribute__ ((dllexport))
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# else
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# define MDAL_EXPORT __declspec(dllexport) // Note: actually gcc seems to also supports this syntax.
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# endif
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# else
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# ifdef __GNUC__
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# define MDAL_EXPORT __attribute__ ((dllimport))
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# else
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# define MDAL_EXPORT __declspec(dllimport) // Note: actually gcc seems to also supports this syntax.
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# endif
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# endif
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# else
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# if __GNUC__ >= 4
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# define MDAL_EXPORT __attribute__ ((visibility ("default")))
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# else
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# define MDAL_EXPORT
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# endif
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# endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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/* Statuses */
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enum Status
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{
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None,
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// Errors
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Err_NotEnoughMemory,
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Err_FileNotFound,
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Err_UnknownFormat,
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Err_IncompatibleMesh,
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Err_InvalidData,
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Err_MissingDriver,
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// Warnings
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Warn_UnsupportedElement,
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Warn_InvalidElements,
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Warn_ElementWithInvalidNode,
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Warn_ElementNotUnique,
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Warn_NodeNotUnique
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};
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/* Mesh */
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typedef void *MeshH;
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//! Return MDAL version
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MDAL_EXPORT const char *MDAL_Version();
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//! Return last status message
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MDAL_EXPORT Status MDAL_LastStatus();
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//! Load mesh file. On error see MDAL_LastStatus for error type This effectively loads whole mesh in-memory
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MDAL_EXPORT MeshH MDAL_LoadMesh( const char *meshFile );
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//! Close mesh, free the memory
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MDAL_EXPORT void MDAL_CloseMesh( MeshH mesh );
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//! Return vertex count for the mesh
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MDAL_EXPORT size_t MDAL_M_vertexCount( MeshH mesh );
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//! Return vertex X coord for the mesh
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MDAL_EXPORT double MDAL_M_vertexXCoordinatesAt( MeshH mesh, size_t index );
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//! Return vertex Y coord for the mesh
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MDAL_EXPORT double MDAL_M_vertexYCoordinatesAt( MeshH mesh, size_t index );
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//! Return face count for the mesh
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MDAL_EXPORT size_t MDAL_M_faceCount( MeshH mesh );
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//! Return number of vertices face consist of, e.g. 3 for triangle
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MDAL_EXPORT size_t MDAL_M_faceVerticesCountAt( MeshH mesh, size_t index );
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//! Return vertex index for face
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MDAL_EXPORT size_t MDAL_M_faceVerticesIndexAt( MeshH mesh, size_t face_index, size_t vertex_index );
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#ifdef __cplusplus
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}
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#endif
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#endif //MDAL_H
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