octahedron also done
another pass at making all variable types consistent added some direct mode drawing code for debugging git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1153 7f0cb862-5218-0410-a997-914c9d46530a
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dcnieho
parent
5bb67c1c82
commit
4f9c00faa7
@ -67,7 +67,7 @@
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* useWireMode controls the drawing of solids (false) or wire frame
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* versions (TRUE) of the geometry you pass
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*/
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static void fghDrawGeometry(GLenum vertexMode, double* vertices, double* normals, GLsizei numVertices, GLboolean useWireMode)
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static void fghDrawGeometry(GLenum vertexMode, GLdouble* vertices, GLdouble* normals, GLsizei numVertices, GLboolean useWireMode)
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{
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if (useWireMode)
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{
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@ -75,15 +75,31 @@ static void fghDrawGeometry(GLenum vertexMode, double* vertices, double* normals
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glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
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}
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if (1)
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{
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_NORMAL_ARRAY);
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glVertexPointer(3, GL_DOUBLE, 0, vertices);
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glNormalPointer(GL_DOUBLE, 0, normals);
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glDrawArrays(vertexMode,0,numVertices);
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glDrawArrays(vertexMode, 0, numVertices);
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glDisableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_NORMAL_ARRAY);
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}
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else
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{
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int i;
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glBegin(vertexMode);
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for(i=0; i<numVertices; i++)
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{
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glNormal3dv(normals+i*3);
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printf("n(%i) = (%1.4f,%1.4f,%1.4f)\n",i,*(normals+i*3),*(normals+i*3+1),*(normals+i*3+2));
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glVertex3dv(vertices+i*3);
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printf("v(%i) = (%1.4f,%1.4f,%1.4f)\n",i,*(vertices+i*3),*(vertices+i*3+1),*(vertices+i*3+2));
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}
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glEnd();
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}
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if (useWireMode)
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{
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@ -164,7 +180,7 @@ static GLdouble cube_n[CUBE_NUM_FACES*3] =
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};
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/* Vertex indices */
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static GLubyte cube_vi[CUBE_NUM_FACES*CUBE_NUM_VERT_PER_FACE] =
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static GLubyte cube_vi[CUBE_VERT_PER_CUBE] =
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{
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0,1,2,3,
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0,3,4,5,
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@ -176,14 +192,69 @@ static GLubyte cube_vi[CUBE_NUM_FACES*CUBE_NUM_VERT_PER_FACE] =
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/* Cache of input to glDrawArrays */
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static GLboolean cubeCached = FALSE;
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static double cube_verts[CUBE_VERT_ELEM_PER_CUBE];
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static double cube_norms[CUBE_VERT_ELEM_PER_CUBE];
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static GLdouble cube_verts[CUBE_VERT_ELEM_PER_CUBE];
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static GLdouble cube_norms[CUBE_VERT_ELEM_PER_CUBE];
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static void fghCubeGenerate()
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{
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fghGenerateGeometry(CUBE_NUM_FACES, CUBE_NUM_VERT_PER_FACE, cube_v, cube_vi, cube_n, cube_verts, cube_norms);
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}
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/* -- Octahedron -- */
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#define OCTAHEDRON_NUM_VERT 6
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#define OCTAHEDRON_NUM_FACES 8
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#define OCTAHEDRON_NUM_VERT_PER_FACE 3
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#define OCTAHEDRON_VERT_PER_OCTA OCTAHEDRON_NUM_FACES*OCTAHEDRON_NUM_VERT_PER_FACE
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#define OCTAHEDRON_VERT_ELEM_PER_OCTA OCTAHEDRON_VERT_PER_OCTA*3
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/* Vertex Coordinates */
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static GLdouble octahedron_v[OCTAHEDRON_NUM_VERT*3] =
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{
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1., 0., 0.,
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0., 1., 0.,
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0., 0., 1.,
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-1., 0., 0.,
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0., -1., 0.,
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0., 0., -1.,
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};
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/* Normal Vectors */
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static GLdouble octahedron_n[OCTAHEDRON_NUM_FACES*3] =
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{
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0.577350269189, 0.577350269189, 0.577350269189, /* sqrt(1/3) */
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0.577350269189, 0.577350269189,-0.577350269189,
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0.577350269189,-0.577350269189, 0.577350269189,
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0.577350269189,-0.577350269189,-0.577350269189,
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-0.577350269189, 0.577350269189, 0.577350269189,
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-0.577350269189, 0.577350269189,-0.577350269189,
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-0.577350269189,-0.577350269189, 0.577350269189,
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-0.577350269189,-0.577350269189,-0.577350269189
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};
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/* Vertex indices */
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static GLubyte octahedron_vi[OCTAHEDRON_VERT_PER_OCTA] =
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{
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0, 1, 2,
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0, 5, 1,
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0, 2, 4,
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0, 4, 5,
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3, 2, 1,
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3, 1, 5,
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3, 4, 2,
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3, 5, 4
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};
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/* Cache of input to glDrawArrays */
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static GLboolean octahedronCached = FALSE;
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static GLdouble octahedron_verts[OCTAHEDRON_VERT_ELEM_PER_OCTA];
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static GLdouble octahedron_norms[OCTAHEDRON_VERT_ELEM_PER_OCTA];
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static void fghOctahedronGenerate()
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{
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fghGenerateGeometry(OCTAHEDRON_NUM_FACES, OCTAHEDRON_NUM_VERT_PER_FACE, octahedron_v, octahedron_vi, octahedron_n, octahedron_verts, octahedron_norms);
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}
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/* -- Tetrahedron -- */
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/* Magic Numbers: r0 = ( 1, 0, 0 )
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* r1 = ( -1/3, 2 sqrt(2) / 3, 0 )
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@ -218,7 +289,7 @@ static GLdouble tetr_n[CUBE_NUM_FACES*3] =
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};
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/* Vertex indices */
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static GLubyte tetr_vi[TETR_NUM_FACES*TETR_NUM_VERT_PER_FACE] =
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static GLubyte tetr_vi[TETR_VERT_PER_TETR] =
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{
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1, 3, 2,
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0, 2, 3,
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@ -228,8 +299,8 @@ static GLubyte tetr_vi[TETR_NUM_FACES*TETR_NUM_VERT_PER_FACE] =
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/* Cache of input to glDrawArrays */
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static GLboolean tetrCached = FALSE;
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static double tetr_verts[TETR_VERT_ELEM_PER_TETR];
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static double tetr_norms[TETR_VERT_ELEM_PER_TETR];
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static GLdouble tetr_verts[TETR_VERT_ELEM_PER_TETR];
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static GLdouble tetr_norms[TETR_VERT_ELEM_PER_TETR];
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static void fghTetrahedronGenerate()
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{
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@ -237,7 +308,7 @@ static void fghTetrahedronGenerate()
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}
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/* -- Sierpinski Sponge -- */
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static void fghSierpinskiSpongeGenerate ( int numLevels, GLdouble offset[3], GLdouble scale, double* vertices, double* normals )
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static void fghSierpinskiSpongeGenerate ( int numLevels, GLdouble offset[3], GLdouble scale, GLdouble* vertices, GLdouble* normals )
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{
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int i, j;
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if ( numLevels == 0 )
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@ -346,7 +417,7 @@ static void fghCube( GLdouble dSize, GLboolean useWireMode )
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int i;
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/* Need to build new vertex list containing vertices for cube of different size */
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GLdouble *vertices = malloc(CUBE_VERT_ELEM_PER_CUBE * sizeof(double));
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GLdouble *vertices = malloc(CUBE_VERT_ELEM_PER_CUBE * sizeof(GLdouble));
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for (i=0; i<CUBE_VERT_ELEM_PER_CUBE; i++)
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vertices[i] = dSize*cube_verts[i];
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@ -356,6 +427,17 @@ static void fghCube( GLdouble dSize, GLboolean useWireMode )
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fghDrawGeometry(GL_QUADS,cube_verts,cube_norms,CUBE_VERT_PER_CUBE,useWireMode);
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}
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static void fghOctahedron( GLboolean useWireMode )
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{
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if (!octahedronCached)
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{
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fghOctahedronGenerate();
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octahedronCached = TRUE;
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}
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fghDrawGeometry(GL_TRIANGLES,octahedron_verts,octahedron_norms,OCTAHEDRON_VERT_PER_OCTA,useWireMode);
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}
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static void fghTetrahedron( GLboolean useWireMode )
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{
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if (!tetrCached)
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@ -377,8 +459,8 @@ static void fghSierpinskiSponge ( int numLevels, GLdouble offset[3], GLdouble sc
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if (numTetr)
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{
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/* Allocate memory */
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vertices = malloc(numVert*3 * sizeof(double));
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normals = malloc(numVert*3 * sizeof(double));
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vertices = malloc(numVert*3 * sizeof(GLdouble));
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normals = malloc(numVert*3 * sizeof(GLdouble));
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/* Generate elements */
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fghSierpinskiSpongeGenerate ( numLevels, offset, scale, vertices, normals );
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@ -1093,48 +1175,6 @@ void FGAPIENTRY glutSolidDodecahedron( void )
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glEnd () ;
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}
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/*
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*
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*/
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void FGAPIENTRY glutWireOctahedron( void )
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{
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FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireOctahedron" );
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#define RADIUS 1.0f
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glBegin( GL_LINE_LOOP );
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glNormal3d( 0.577350269189, 0.577350269189, 0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, RADIUS, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS );
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glNormal3d( 0.577350269189, 0.577350269189,-0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS, 0.0 );
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glNormal3d( 0.577350269189,-0.577350269189, 0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, 0.0 );
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glNormal3d( 0.577350269189,-0.577350269189,-0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS );
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glNormal3d(-0.577350269189, 0.577350269189, 0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, 0.0 );
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glNormal3d(-0.577350269189, 0.577350269189,-0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS );
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glNormal3d(-0.577350269189,-0.577350269189, 0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS );
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glNormal3d(-0.577350269189,-0.577350269189,-0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS, 0.0 );
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glEnd();
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#undef RADIUS
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}
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/*
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*
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*/
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void FGAPIENTRY glutSolidOctahedron( void )
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{
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FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidOctahedron" );
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#define RADIUS 1.0f
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glBegin( GL_TRIANGLES );
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glNormal3d( 0.577350269189, 0.577350269189, 0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, RADIUS, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS );
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glNormal3d( 0.577350269189, 0.577350269189,-0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS, 0.0 );
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glNormal3d( 0.577350269189,-0.577350269189, 0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, 0.0 );
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glNormal3d( 0.577350269189,-0.577350269189,-0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS );
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glNormal3d(-0.577350269189, 0.577350269189, 0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, 0.0 );
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glNormal3d(-0.577350269189, 0.577350269189,-0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS );
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glNormal3d(-0.577350269189,-0.577350269189, 0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS );
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glNormal3d(-0.577350269189,-0.577350269189,-0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS, 0.0 );
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glEnd();
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#undef RADIUS
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}
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/*
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*
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*/
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@ -1329,15 +1369,15 @@ void FGAPIENTRY glutSolidCube( GLdouble dSize )
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fghCube( dSize, FALSE );
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}
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void FGAPIENTRY glutWireTetrahedron( void )
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void FGAPIENTRY glutWireOctahedron( void )
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{
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FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireTetrahedron" );
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fghTetrahedron( TRUE );
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FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireOctahedron" );
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fghOctahedron( TRUE );
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}
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void FGAPIENTRY glutSolidTetrahedron( void )
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void FGAPIENTRY glutSolidOctahedron( void )
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{
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FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidTetrahedron" );
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fghTetrahedron( FALSE );
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FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidOctahedron" );
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fghOctahedron( FALSE );
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}
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void FGAPIENTRY glutWireSierpinskiSponge ( int num_levels, GLdouble offset[3], GLdouble scale )
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@ -1351,5 +1391,16 @@ void FGAPIENTRY glutSolidSierpinskiSponge ( int num_levels, GLdouble offset[3],
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fghSierpinskiSponge ( num_levels, offset, scale, FALSE );
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}
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void FGAPIENTRY glutWireTetrahedron( void )
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{
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FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireTetrahedron" );
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fghTetrahedron( TRUE );
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}
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void FGAPIENTRY glutSolidTetrahedron( void )
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{
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FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidTetrahedron" );
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fghTetrahedron( FALSE );
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}
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/*** END OF FILE ***/
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