docs and cosmetics in fg_geometry, should be a finished product now,
except for more testing of the OGL2+ path git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1306 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
dcnieho
parent
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@ -30,10 +30,6 @@
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#include "fg_gl2.h"
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#include <math.h>
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/*
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* Need more types of polyhedra? See CPolyhedron in MRPT
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*/
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/* VC++6 in C mode doesn't have C99's sinf/cos/sqrtf */
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#ifndef HAVE_SINF
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#define sinf(x) (float)sin((double)(x))
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@ -45,17 +41,158 @@
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#define sqrtf(x) (float)sqrt((double)(x))
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#endif
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/* General functions for drawing geometry
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* Solids are drawn by glDrawArrays if composed of triangles, or by
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* glDrawElements if consisting of squares or pentagons that were
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* decomposed into triangles (some vertices are repeated in that case).
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* WireFrame drawing will have to be done per face, using GL_LINE_LOOP and
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* issuing one draw call per face. Always use glDrawArrays as no triangle
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* decomposition needed. We use the "first" parameter in glDrawArrays to go
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* from face to face.
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/* declare for drawing using the different OpenGL versions here so we can
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have a nice code order below */
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#ifndef GL_ES_VERSION_2_0
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static void fghDrawGeometryWire11(GLfloat *vertices, GLfloat *normals,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertPerPart, GLenum vertexMode,
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GLushort *vertIdxs2, GLsizei numParts2, GLsizei numVertPerPart2
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);
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static void fghDrawGeometrySolid11(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertIdxsPerPart);
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#endif
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static void fghDrawGeometryWire20(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertPerPart, GLenum vertexMode,
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GLushort *vertIdxs2, GLsizei numParts2, GLsizei numVertPerPart2,
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GLint attribute_v_coord, GLint attribute_v_normal
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);
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static void fghDrawGeometrySolid20(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertIdxsPerPart,
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GLint attribute_v_coord, GLint attribute_v_normal);
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/* Drawing geometry:
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* Explanation of the functions has to be separate for the polyhedra and
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* the non-polyhedra (objects with a circular cross-section).
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* Polyhedra:
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* - We have only implemented the five platonic solids and the rhomboid
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* dodecahedron. If you need more types of polyhedra, please see
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* CPolyhedron in MRPT
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* - Solids are drawn by glDrawArrays if composed of triangular faces
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* (the tetrahedron, octahedron, and icosahedron), or are first
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* decomposed into triangles and then drawn by glDrawElements if its
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* faces are squares or pentagons (cube, dodecahedron and rhombic
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* dodecahedron) as some vertices are repeated in that case.
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* - WireFrame drawing is done using a GL_LINE_LOOP per face, and thus
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* issuing one draw call per face. glDrawArrays is always used as no
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* triangle decomposition is needed to draw faces. We use the "first"
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* parameter in glDrawArrays to go from face to face.
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*
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* Non-polyhedra:
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* - We have implemented the sphere, cylinder, cone and torus.
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* - All shapes are characterized by two parameters: the number of
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* subdivisions along two axes used to construct the shape's vertices
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* (e.g. stacks and slices for the sphere).
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* As different subdivisions are most suitable for different shapes,
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* and are thus also named differently, I wont provide general comments
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* on them here.
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* - Solids are drawn using glDrawArrays and GL_TRIANGLE_STRIP. Each
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* strip covers one revolution around one of the two subdivision axes
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* of the shape.
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* - WireFrame drawing is done for the subdivisions along the two axes
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* separately, usually using GL_LINE_LOOP. Vertex index arrays are
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* built containing the vertices to be drawn for each loop, which are
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* then drawn using multiple calls to glDrawElements. As the number of
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* subdivisions along the two axes is not guaranteed to be equal, the
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* vertex indices for e.g. stacks and slices are stored in separate
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* arrays, which makes the input to the drawing function a bit clunky,
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* but allows for the same drawing function to be used for all shapes.
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*/
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/** See comment for fghDrawGeometryWire **/
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/**
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* Draw geometric shape in wire mode (only edges)
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*
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* Arguments:
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* GLfloat *vertices, GLfloat *normals, GLsizei numVertices
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* The vertex coordinate and normal buffers, and the number of entries in
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* those
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* GLushort *vertIdxs
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* a vertex indices buffer, optional (never passed for the polyhedra)
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* GLsizei numParts, GLsizei numVertPerPart
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* polyhedra: number of faces, and the number of vertices for drawing
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* each face
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* non-polyhedra: number of edges to draw for first subdivision (not
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* necessarily equal to number of subdivisions requested by user, e.g.
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* as each subdivision is enclosed by two edges), and number of
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* vertices for drawing each
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* numParts * numVertPerPart gives the number of entries in the vertex
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* array vertIdxs
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* GLenum vertexMode
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* vertex drawing mode (e.g. always GL_LINE_LOOP for polyhedra, varies
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* for others)
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* GLushort *vertIdxs2, GLsizei numParts2, GLsizei numVertPerPart2
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* non-polyhedra only: same as the above, but now for subdivisions along
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* the other axis. Always drawn as GL_LINE_LOOP.
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*
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* Feel free to contribute better naming ;)
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*/
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static void fghDrawGeometryWire(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertPerPart, GLenum vertexMode,
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GLushort *vertIdxs2, GLsizei numParts2, GLsizei numVertPerPart2
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)
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{
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GLint attribute_v_coord = fgStructure.CurrentWindow->Window.attribute_v_coord;
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GLint attribute_v_normal = fgStructure.CurrentWindow->Window.attribute_v_normal;
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if (fgState.HasOpenGL20 && (attribute_v_coord != -1 || attribute_v_normal != -1))
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/* User requested a 2.0 draw */
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fghDrawGeometryWire20(vertices, normals, numVertices,
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vertIdxs, numParts, numVertPerPart, vertexMode,
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vertIdxs2, numParts2, numVertPerPart2,
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attribute_v_coord, attribute_v_normal);
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#ifndef GL_ES_VERSION_2_0
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else
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fghDrawGeometryWire11(vertices, normals,
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vertIdxs, numParts, numVertPerPart, vertexMode,
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vertIdxs2, numParts2, numVertPerPart2);
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#endif
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}
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/* Draw the geometric shape with filled triangles
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*
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* Arguments:
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* GLfloat *vertices, GLfloat *normals, GLsizei numVertices
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* The vertex coordinate and normal buffers, and the number of entries in
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* those
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* GLushort *vertIdxs
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* a vertex indices buffer, optional (not passed for the polyhedra with
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* triangular faces)
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* GLsizei numParts, GLsizei numVertPerPart
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* polyhedra: not used for polyhedra with triangular faces
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(numEdgePerFace==3), as each vertex+normal pair is drawn only once,
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so no vertex indices are used.
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Else, the shape was triangulated (DECOMPOSE_TO_TRIANGLE), leading to
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reuse of some vertex+normal pairs, and thus the need to draw with
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glDrawElements. numParts is always 1 in this case (we can draw the
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whole object with one call to glDrawElements as the vertex index
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array contains separate triangles), and numVertPerPart indicates
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the number of vertex indices in the vertex array.
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* non-polyhedra: number of parts (GL_TRIANGLE_STRIPs) to be drawn
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separately (numParts calls to glDrawElements) to create the object.
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numVertPerPart indicates the number of vertex indices to be
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processed at each draw call.
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* numParts * numVertPerPart gives the number of entries in the vertex
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* array vertIdxs
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*/
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static void fghDrawGeometrySolid(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertIdxsPerPart)
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{
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GLint attribute_v_coord = fgStructure.CurrentWindow->Window.attribute_v_coord;
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GLint attribute_v_normal = fgStructure.CurrentWindow->Window.attribute_v_normal;
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if (fgState.HasOpenGL20 && (attribute_v_coord != -1 || attribute_v_normal != -1))
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/* User requested a 2.0 draw */
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fghDrawGeometrySolid20(vertices, normals, numVertices,
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vertIdxs, numParts, numVertIdxsPerPart,
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attribute_v_coord, attribute_v_normal);
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#ifndef GL_ES_VERSION_2_0
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else
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fghDrawGeometrySolid11(vertices, normals, numVertices,
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vertIdxs, numParts, numVertIdxsPerPart);
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#endif
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}
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/* Version for OpenGL (ES) 1.1 */
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#ifndef GL_ES_VERSION_2_0
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@ -88,6 +225,31 @@ static void fghDrawGeometryWire11(GLfloat *vertices, GLfloat *normals,
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glDisableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_NORMAL_ARRAY);
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}
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static void fghDrawGeometrySolid11(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertIdxsPerPart)
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{
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int i;
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_NORMAL_ARRAY);
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glVertexPointer(3, GL_FLOAT, 0, vertices);
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glNormalPointer(GL_FLOAT, 0, normals);
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if (!vertIdxs)
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glDrawArrays(GL_TRIANGLES, 0, numVertices);
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else
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if (numParts>1)
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for (i=0; i<numParts; i++)
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glDrawElements(GL_TRIANGLE_STRIP, numVertIdxsPerPart, GL_UNSIGNED_SHORT, vertIdxs+i*numVertIdxsPerPart);
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else
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glDrawElements(GL_TRIANGLES, numVertIdxsPerPart, GL_UNSIGNED_SHORT, vertIdxs);
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glDisableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_NORMAL_ARRAY);
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}
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#endif
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/* Version for OpenGL (ES) >= 2.0 */
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@ -200,72 +362,12 @@ static void fghDrawGeometryWire20(GLfloat *vertices, GLfloat *normals, GLsizei n
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fghDeleteBuffers(1, &ibo_elements2);
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}
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/**
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* Draw geometric shape in wire mode (only edges)
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*
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* Arguments: the sphere, in wire mode, consists of multiple line
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* loops for the stacks, and for the slices. The vertex indices for
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* all slices are thrown together. numParts is how many separate loops
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* are in the array, numVertIdxsPerPart is how many vertices there are
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* per loop. For those suffixed with 2, its exactly the same
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* principle, the number of stacks and slices is not the same.
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*
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* Feel free to contribute better naming ;)
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*
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* See comment for fghDrawGeometrySolid
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*/
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static void fghDrawGeometryWire(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertPerPart, GLenum vertexMode,
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GLushort *vertIdxs2, GLsizei numParts2, GLsizei numVertPerPart2
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)
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{
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GLint attribute_v_coord = fgStructure.CurrentWindow->Window.attribute_v_coord;
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GLint attribute_v_normal = fgStructure.CurrentWindow->Window.attribute_v_normal;
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if (fgState.HasOpenGL20 && (attribute_v_coord != -1 || attribute_v_normal != -1))
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/* User requested a 2.0 draw */
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fghDrawGeometryWire20(vertices, normals, numVertices,
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vertIdxs, numParts, numVertPerPart, vertexMode,
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vertIdxs2, numParts2, numVertPerPart2,
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attribute_v_coord, attribute_v_normal);
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#ifndef GL_ES_VERSION_2_0
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else
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fghDrawGeometryWire11(vertices, normals,
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vertIdxs, numParts, numVertPerPart, vertexMode,
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vertIdxs2, numParts2, numVertPerPart2);
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#endif
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}
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/* Version for OpenGL (ES) 1.1 */
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#ifndef GL_ES_VERSION_2_0
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static void fghDrawGeometrySolid11(GLfloat *vertices, GLfloat *normals, GLushort *vertIdxs,
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GLsizei numVertices, GLsizei numParts, GLsizei numVertIdxsPerPart)
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{
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int i;
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_NORMAL_ARRAY);
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glVertexPointer(3, GL_FLOAT, 0, vertices);
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glNormalPointer(GL_FLOAT, 0, normals);
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if (vertIdxs == NULL)
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glDrawArrays(GL_TRIANGLES, 0, numVertices);
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else
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if (numParts>1)
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for (i=0; i<numParts; i++)
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glDrawElements(GL_TRIANGLE_STRIP, numVertIdxsPerPart, GL_UNSIGNED_SHORT, vertIdxs+i*numVertIdxsPerPart);
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else
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glDrawElements(GL_TRIANGLES, numVertIdxsPerPart, GL_UNSIGNED_SHORT, vertIdxs);
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glDisableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_NORMAL_ARRAY);
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}
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#endif
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/* Version for OpenGL (ES) >= 2.0 */
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static void fghDrawGeometrySolid20(GLfloat *vertices, GLfloat *normals, GLushort *vertIdxs,
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GLsizei numVertices, GLsizei numParts, GLsizei numVertIdxsPerPart,
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static void fghDrawGeometrySolid20(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
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GLushort *vertIdxs, GLsizei numParts, GLsizei numVertIdxsPerPart,
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GLint attribute_v_coord, GLint attribute_v_normal)
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{
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GLuint vbo_coords = 0, vbo_normals = 0, ibo_elements = 0;
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@ -353,35 +455,11 @@ static void fghDrawGeometrySolid20(GLfloat *vertices, GLfloat *normals, GLushort
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fghDeleteBuffers(1, &ibo_elements);
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}
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/* Draw the geometric shape with filled triangles
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*
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* - If the shape is naturally triangulated (numEdgePerFace==3), each
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* vertex+normal pair is used only once, so no vertex indices.
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*
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* - If the shape was triangulated (DECOMPOSE_TO_TRIANGLE), some
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* vertex+normal pairs are reused, so use vertex indices.
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*/
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static void fghDrawGeometrySolid(GLfloat *vertices, GLfloat *normals, GLushort *vertIdxs,
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GLsizei numVertices, GLsizei numParts, GLsizei numVertIdxsPerPart)
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{
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GLint attribute_v_coord = fgStructure.CurrentWindow->Window.attribute_v_coord;
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GLint attribute_v_normal = fgStructure.CurrentWindow->Window.attribute_v_normal;
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if (fgState.HasOpenGL20 && (attribute_v_coord != -1 || attribute_v_normal != -1))
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/* User requested a 2.0 draw */
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fghDrawGeometrySolid20(vertices, normals, vertIdxs,
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numVertices, numParts, numVertIdxsPerPart,
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attribute_v_coord, attribute_v_normal);
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#ifndef GL_ES_VERSION_2_0
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else
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fghDrawGeometrySolid11(vertices, normals, vertIdxs,
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numVertices, numParts, numVertIdxsPerPart);
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#endif
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}
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/* Shape decomposition to triangles
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/**
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* Generate all combinations of vertices and normals needed to draw object.
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* Optional shape decomposition to triangles:
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* We'll use glDrawElements to draw all shapes that are not naturally
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* composed of triangles, so generate an index vector here, using the
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* below sampling scheme.
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@ -455,8 +533,8 @@ static void fghGenerateGeometry(int numFaces, int numEdgePerFace, GLfloat *verti
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*/
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#define DECLARE_SHAPE_CACHE(name,nameICaps,nameCaps)\
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static GLboolean name##Cached = FALSE;\
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static GLfloat name##_verts[nameCaps##_VERT_ELEM_PER_OBJ];\
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static GLfloat name##_norms[nameCaps##_VERT_ELEM_PER_OBJ];\
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static GLfloat name##_verts[nameCaps##_VERT_ELEM_PER_OBJ];\
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static GLfloat name##_norms[nameCaps##_VERT_ELEM_PER_OBJ];\
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static void fgh##nameICaps##Generate()\
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{\
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fghGenerateGeometry(nameCaps##_NUM_FACES, nameCaps##_NUM_EDGE_PER_FACE,\
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@ -465,9 +543,9 @@ static void fghGenerateGeometry(int numFaces, int numEdgePerFace, GLfloat *verti
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}
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#define DECLARE_SHAPE_CACHE_DECOMPOSE_TO_TRIANGLE(name,nameICaps,nameCaps)\
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static GLboolean name##Cached = FALSE;\
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static GLfloat name##_verts[nameCaps##_VERT_ELEM_PER_OBJ];\
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static GLfloat name##_norms[nameCaps##_VERT_ELEM_PER_OBJ];\
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static GLushort name##_vertIdxs[nameCaps##_VERT_PER_OBJ_TRI];\
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static GLfloat name##_verts[nameCaps##_VERT_ELEM_PER_OBJ];\
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static GLfloat name##_norms[nameCaps##_VERT_ELEM_PER_OBJ];\
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static GLushort name##_vertIdxs[nameCaps##_VERT_PER_OBJ_TRI];\
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static void fgh##nameICaps##Generate()\
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{\
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fghGenerateGeometryWithIndexArray(nameCaps##_NUM_FACES, nameCaps##_NUM_EDGE_PER_FACE,\
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@ -870,7 +948,7 @@ static void fghSierpinskiSpongeGenerate ( int numLevels, double offset[3], GLflo
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}
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}
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/* -- Now the various shapes involving circles -- */
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/* -- Now the various non-polyhedra (shapes involving circles) -- */
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/*
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* Compute lookup table of cos and sin values forming a circle
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* (or half circle if halfCircle==TRUE)
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@ -945,7 +1023,12 @@ static void fghGenerateSphere(GLfloat radius, GLint slices, GLint stacks, GLfloa
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return;
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}
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*nVert = slices*(stacks-1)+2;
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if ((*nVert) > 65535) /* TODO: must have a better solution than this low limit, at least for architectures where gluint is available */
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if ((*nVert) > 65535)
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/*
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* limit of glushort, thats 256*256 subdivisions, should be enough in practice.
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* But still:
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* TODO: must have a better solution than this low limit, at least for architectures where gluint is available
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*/
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fgWarning("fghGenerateSphere: too many slices or stacks requested, indices will wrap");
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/* precompute values on unit circle */
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@ -1038,6 +1121,11 @@ void fghGenerateCone(
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*nVert = slices*(stacks+2)+1; /* need an extra stack for closing off bottom with correct normals */
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if ((*nVert) > 65535)
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/*
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* limit of glushort, thats 256*256 subdivisions, should be enough in practice.
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* But still:
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* TODO: must have a better solution than this low limit, at least for architectures where gluint is available
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*/
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fgWarning("fghGenerateCone: too many slices or stacks requested, indices will wrap");
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/* Pre-computed circle */
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@ -1050,7 +1138,7 @@ void fghGenerateCone(
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{
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||||
free(*vertices);
|
||||
free(*normals);
|
||||
fgError("Failed to allocate memory in fghGenerateSphere");
|
||||
fgError("Failed to allocate memory in fghGenerateCone");
|
||||
}
|
||||
|
||||
/* bottom */
|
||||
@ -1120,6 +1208,11 @@ void fghGenerateCylinder(
|
||||
*nVert = slices*(stacks+3)+2; /* need two extra stacks for closing off top and bottom with correct normals */
|
||||
|
||||
if ((*nVert) > 65535)
|
||||
/*
|
||||
* limit of glushort, thats 256*256 subdivisions, should be enough in practice.
|
||||
* But still:
|
||||
* TODO: must have a better solution than this low limit, at least for architectures where gluint is available
|
||||
*/
|
||||
fgWarning("fghGenerateCylinder: too many slices or stacks requested, indices will wrap");
|
||||
|
||||
/* Pre-computed circle */
|
||||
@ -1219,6 +1312,11 @@ void fghGenerateTorus(
|
||||
*nVert = nSides * nRings;
|
||||
|
||||
if ((*nVert) > 65535)
|
||||
/*
|
||||
* limit of glushort, thats 256*256 subdivisions, should be enough in practice.
|
||||
* But still:
|
||||
* TODO: must have a better solution than this low limit, at least for architectures where gluint is available
|
||||
*/
|
||||
fgWarning("fghGenerateTorus: too many slices or stacks requested, indices will wrap");
|
||||
|
||||
/* precompute values on unit circle */
|
||||
@ -1275,8 +1373,8 @@ void fghGenerateTorus(
|
||||
}\
|
||||
else\
|
||||
{\
|
||||
fghDrawGeometrySolid(name##_verts,name##_norms,vertIdxs,\
|
||||
nameCaps##_VERT_PER_OBJ, 1, nameCaps##_VERT_PER_OBJ_TRI); \
|
||||
fghDrawGeometrySolid(name##_verts,name##_norms,nameCaps##_VERT_PER_OBJ,\
|
||||
vertIdxs, 1, nameCaps##_VERT_PER_OBJ_TRI); \
|
||||
}\
|
||||
}
|
||||
#define DECLARE_INTERNAL_DRAW(name,nameICaps,nameCaps) _DECLARE_INTERNAL_DRAW_DO_DECLARE(name,nameICaps,nameCaps,NULL)
|
||||
@ -1317,8 +1415,8 @@ static void fghCube( GLfloat dSize, GLboolean useWireMode )
|
||||
NULL,CUBE_NUM_FACES, CUBE_NUM_EDGE_PER_FACE,GL_LINE_LOOP,
|
||||
NULL,0,0);
|
||||
else
|
||||
fghDrawGeometrySolid(vertices, cube_norms, cube_vertIdxs,
|
||||
CUBE_VERT_PER_OBJ, 1, CUBE_VERT_PER_OBJ_TRI);
|
||||
fghDrawGeometrySolid(vertices, cube_norms, CUBE_VERT_PER_OBJ,
|
||||
cube_vertIdxs, 1, CUBE_VERT_PER_OBJ_TRI);
|
||||
|
||||
if (dSize!=1.f)
|
||||
/* cleanup allocated memory */
|
||||
@ -1361,7 +1459,7 @@ static void fghSierpinskiSponge ( int numLevels, double offset[3], GLfloat scale
|
||||
NULL,numFace,TETRAHEDRON_NUM_EDGE_PER_FACE,GL_LINE_LOOP,
|
||||
NULL,0,0);
|
||||
else
|
||||
fghDrawGeometrySolid(vertices,normals,NULL,numVert,1,0);
|
||||
fghDrawGeometrySolid(vertices,normals,numVert,NULL,1,0);
|
||||
|
||||
free(vertices);
|
||||
free(normals );
|
||||
@ -1369,13 +1467,13 @@ static void fghSierpinskiSponge ( int numLevels, double offset[3], GLfloat scale
|
||||
}
|
||||
|
||||
|
||||
static void fghSphere( double radius, GLint slices, GLint stacks, GLboolean useWireMode )
|
||||
static void fghSphere( GLfloat radius, GLint slices, GLint stacks, GLboolean useWireMode )
|
||||
{
|
||||
int i,j,idx, nVert;
|
||||
GLfloat *vertices, *normals;
|
||||
|
||||
/* Generate vertices and normals */
|
||||
fghGenerateSphere((GLfloat)radius,slices,stacks,&vertices,&normals,&nVert);
|
||||
fghGenerateSphere(radius,slices,stacks,&vertices,&normals,&nVert);
|
||||
|
||||
if (nVert==0)
|
||||
/* nothing to draw */
|
||||
@ -1483,7 +1581,7 @@ static void fghSphere( double radius, GLint slices, GLint stacks, GLboolean useW
|
||||
|
||||
|
||||
/* draw */
|
||||
fghDrawGeometrySolid(vertices,normals,stripIdx,nVert,stacks,(slices+1)*2);
|
||||
fghDrawGeometrySolid(vertices,normals,nVert,stripIdx,stacks,(slices+1)*2);
|
||||
|
||||
/* cleanup allocated memory */
|
||||
free(stripIdx);
|
||||
@ -1494,14 +1592,14 @@ static void fghSphere( double radius, GLint slices, GLint stacks, GLboolean useW
|
||||
free(normals);
|
||||
}
|
||||
|
||||
static void fghCone( double base, double height, GLint slices, GLint stacks, GLboolean useWireMode )
|
||||
static void fghCone( GLfloat base, GLfloat height, GLint slices, GLint stacks, GLboolean useWireMode )
|
||||
{
|
||||
int i,j,idx, nVert;
|
||||
GLfloat *vertices, *normals;
|
||||
|
||||
/* Generate vertices and normals */
|
||||
/* Note, (stacks+1)*slices vertices for side of object, slices+1 for top and bottom closures */
|
||||
fghGenerateCone((GLfloat)base,(GLfloat)height,slices,stacks,&vertices,&normals,&nVert);
|
||||
fghGenerateCone(base,height,slices,stacks,&vertices,&normals,&nVert);
|
||||
|
||||
if (nVert==0)
|
||||
/* nothing to draw */
|
||||
@ -1594,7 +1692,7 @@ static void fghCone( double base, double height, GLint slices, GLint stacks, GLb
|
||||
}
|
||||
|
||||
/* draw */
|
||||
fghDrawGeometrySolid(vertices,normals,stripIdx,nVert,stacks+1,(slices+1)*2);
|
||||
fghDrawGeometrySolid(vertices,normals,nVert,stripIdx,stacks+1,(slices+1)*2);
|
||||
|
||||
/* cleanup allocated memory */
|
||||
free(stripIdx);
|
||||
@ -1605,14 +1703,14 @@ static void fghCone( double base, double height, GLint slices, GLint stacks, GLb
|
||||
free(normals);
|
||||
}
|
||||
|
||||
static void fghCylinder( double radius, double height, GLint slices, GLint stacks, GLboolean useWireMode )
|
||||
static void fghCylinder( GLfloat radius, GLfloat height, GLint slices, GLint stacks, GLboolean useWireMode )
|
||||
{
|
||||
int i,j,idx, nVert;
|
||||
GLfloat *vertices, *normals;
|
||||
|
||||
/* Generate vertices and normals */
|
||||
/* Note, (stacks+1)*slices vertices for side of object, 2*slices+2 for top and bottom closures */
|
||||
fghGenerateCylinder((GLfloat)radius,(GLfloat)height,slices,stacks,&vertices,&normals,&nVert);
|
||||
fghGenerateCylinder(radius,height,slices,stacks,&vertices,&normals,&nVert);
|
||||
|
||||
if (nVert==0)
|
||||
/* nothing to draw */
|
||||
@ -1715,7 +1813,7 @@ static void fghCylinder( double radius, double height, GLint slices, GLint stack
|
||||
stripIdx[idx+1] = nVert-1; /* repeat first slice's idx for closing off shape */
|
||||
|
||||
/* draw */
|
||||
fghDrawGeometrySolid(vertices,normals,stripIdx,nVert,stacks+2,(slices+1)*2);
|
||||
fghDrawGeometrySolid(vertices,normals,nVert,stripIdx,stacks+2,(slices+1)*2);
|
||||
|
||||
/* cleanup allocated memory */
|
||||
free(stripIdx);
|
||||
@ -1726,13 +1824,13 @@ static void fghCylinder( double radius, double height, GLint slices, GLint stack
|
||||
free(normals);
|
||||
}
|
||||
|
||||
static void fghTorus( double dInnerRadius, double dOuterRadius, GLint nSides, GLint nRings, GLboolean useWireMode )
|
||||
static void fghTorus( GLfloat dInnerRadius, GLfloat dOuterRadius, GLint nSides, GLint nRings, GLboolean useWireMode )
|
||||
{
|
||||
int i,j,idx, nVert;
|
||||
GLfloat *vertices, *normals;
|
||||
|
||||
/* Generate vertices and normals */
|
||||
fghGenerateTorus((GLfloat)dInnerRadius,(GLfloat)dOuterRadius,nSides,nRings, &vertices,&normals,&nVert);
|
||||
fghGenerateTorus(dInnerRadius,dOuterRadius,nSides,nRings, &vertices,&normals,&nVert);
|
||||
|
||||
if (nVert==0)
|
||||
/* nothing to draw */
|
||||
@ -1809,7 +1907,7 @@ static void fghTorus( double dInnerRadius, double dOuterRadius, GLint nSides, GL
|
||||
}
|
||||
|
||||
/* draw */
|
||||
fghDrawGeometrySolid(vertices,normals,stripIdx,nVert,nSides,(nRings+1)*2);
|
||||
fghDrawGeometrySolid(vertices,normals,nVert,stripIdx,nSides,(nRings+1)*2);
|
||||
|
||||
/* cleanup allocated memory */
|
||||
free(stripIdx);
|
||||
@ -1830,8 +1928,7 @@ static void fghTorus( double dInnerRadius, double dOuterRadius, GLint nSides, GL
|
||||
void FGAPIENTRY glutSolidSphere(double radius, GLint slices, GLint stacks)
|
||||
{
|
||||
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidSphere" );
|
||||
|
||||
fghSphere( radius, slices, stacks, FALSE );
|
||||
fghSphere((GLfloat)radius, slices, stacks, FALSE );
|
||||
}
|
||||
|
||||
/*
|
||||
@ -1840,8 +1937,7 @@ void FGAPIENTRY glutSolidSphere(double radius, GLint slices, GLint stacks)
|
||||
void FGAPIENTRY glutWireSphere(double radius, GLint slices, GLint stacks)
|
||||
{
|
||||
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireSphere" );
|
||||
|
||||
fghSphere( radius, slices, stacks, TRUE );
|
||||
fghSphere((GLfloat)radius, slices, stacks, TRUE );
|
||||
|
||||
}
|
||||
|
||||
@ -1851,8 +1947,7 @@ void FGAPIENTRY glutWireSphere(double radius, GLint slices, GLint stacks)
|
||||
void FGAPIENTRY glutSolidCone( double base, double height, GLint slices, GLint stacks )
|
||||
{
|
||||
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidCone" );
|
||||
|
||||
fghCone( base, height, slices, stacks, FALSE );
|
||||
fghCone((GLfloat)base, (GLfloat)height, slices, stacks, FALSE );
|
||||
}
|
||||
|
||||
/*
|
||||
@ -1861,8 +1956,7 @@ void FGAPIENTRY glutSolidCone( double base, double height, GLint slices, GLint s
|
||||
void FGAPIENTRY glutWireCone( double base, double height, GLint slices, GLint stacks)
|
||||
{
|
||||
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireCone" );
|
||||
|
||||
fghCone( base, height, slices, stacks, TRUE );
|
||||
fghCone((GLfloat)base, (GLfloat)height, slices, stacks, TRUE );
|
||||
}
|
||||
|
||||
|
||||
@ -1872,8 +1966,7 @@ void FGAPIENTRY glutWireCone( double base, double height, GLint slices, GLint st
|
||||
void FGAPIENTRY glutSolidCylinder(double radius, double height, GLint slices, GLint stacks)
|
||||
{
|
||||
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidCylinder" );
|
||||
|
||||
fghCylinder( radius, height, slices, stacks, FALSE );
|
||||
fghCylinder((GLfloat)radius, (GLfloat)height, slices, stacks, FALSE );
|
||||
}
|
||||
|
||||
/*
|
||||
@ -1882,8 +1975,7 @@ void FGAPIENTRY glutSolidCylinder(double radius, double height, GLint slices, GL
|
||||
void FGAPIENTRY glutWireCylinder(double radius, double height, GLint slices, GLint stacks)
|
||||
{
|
||||
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireCylinder" );
|
||||
|
||||
fghCylinder( radius, height, slices, stacks, TRUE );
|
||||
fghCylinder((GLfloat)radius, (GLfloat)height, slices, stacks, TRUE );
|
||||
}
|
||||
|
||||
/*
|
||||
@ -1892,8 +1984,7 @@ void FGAPIENTRY glutWireCylinder(double radius, double height, GLint slices, GLi
|
||||
void FGAPIENTRY glutWireTorus( double dInnerRadius, double dOuterRadius, GLint nSides, GLint nRings )
|
||||
{
|
||||
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireTorus" );
|
||||
|
||||
fghTorus(dInnerRadius, dOuterRadius, nSides, nRings, TRUE);
|
||||
fghTorus((GLfloat)dInnerRadius, (GLfloat)dOuterRadius, nSides, nRings, TRUE);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -1902,8 +1993,7 @@ void FGAPIENTRY glutWireTorus( double dInnerRadius, double dOuterRadius, GLint n
|
||||
void FGAPIENTRY glutSolidTorus( double dInnerRadius, double dOuterRadius, GLint nSides, GLint nRings )
|
||||
{
|
||||
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidTorus" );
|
||||
|
||||
fghTorus(dInnerRadius, dOuterRadius, nSides, nRings, FALSE);
|
||||
fghTorus((GLfloat)dInnerRadius, (GLfloat)dOuterRadius, nSides, nRings, FALSE);
|
||||
}
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user