3 This file is part of libmspgl
4 Copyright © 2007 Mikko Rasa, Mikkosoft Productions
5 Distributed under the LGPL
8 #ifndef MSP_GL_VERTEXBUILDER_H_
9 #define MSP_GL_VERTEXBUILDER_H_
17 Base class for classes that build vertices from a series of function calls.
18 The operating model closely follows that of OpenGL immediate mode: vertex
19 attributes can be specified at any time, and when a vertex() function is
20 called, a vertex is created with the active attribute values.
22 A derived class must overload the 4-argument vertex_() function to process the
23 data. Attributes can be read from protected member variables.
35 virtual ~VertexBuilder() { }
37 void vertex(float x, float y) { vertex(x, y, 0, 1); }
38 void vertex(float x, float y, float z) { vertex(x, y, z, 1); }
39 void vertex(float x, float y, float z, float w) { vertex_(x, y, z, w); }
40 void normal(float x, float y, float z) { nx=x; ny=y; nz=z; }
41 void texcoord(float s) { texcoord(s, 0, 0, 1); }
42 void texcoord(float s, float t) { texcoord(s, t, 0, 1); }
43 void texcoord(float s, float t, float r) { texcoord(s, t, r, 1); }
44 void texcoord(float s, float t, float r, float q) { ts=s; tt=t; tr=r; tq=q; }
45 void color(unsigned char r, unsigned char g, unsigned char b) { color(r, g, b, 255); }
46 void color(unsigned char r, unsigned char g, unsigned char b, unsigned char a) { color(r/255.f, g/255.f, b/255.f, a/255.f); }
47 void color(float r, float g, float b) { color(r, g, b, 1); }
48 void color(float r, float g, float b, float a) { cr=r; cg=g; cb=b; ca=a; }
49 void attrib(unsigned i, float x) { attrib(i, x, 0, 0, 1); }
50 void attrib(unsigned i, float x, float y) { attrib(i, x, y, 0, 1); }
51 void attrib(unsigned i, float x, float y, float z) { attrib(i, x, y, z, 1); }
52 void attrib(unsigned i, float x, float y, float z, float w);
54 float cr, cg, cb, ca; // Color
55 float ts, tt, tr, tq; // TexCoord
56 float nx, ny, nz; // Normal
57 std::map<unsigned, Attrib> av;
59 virtual void vertex_(float, float, float, float) =0;