diff options
Diffstat (limited to 'polyset.cc')
| -rw-r--r-- | polyset.cc | 79 |
1 files changed, 61 insertions, 18 deletions
@@ -41,43 +41,86 @@ void PolySet::insert_vertex(double x, double y, double z) polygons.last().insert(0, Point(x, y, z)); } +static void gl_draw_triangle(GLint *shaderinfo, const PolySet::Point *p0, const PolySet::Point *p1, const PolySet::Point *p2, bool e0, bool e1, bool e2) +{ +#ifdef ENABLE_OPENCSG + if (shaderinfo) { + double e0f = e0 ? 2.0 : -1.0; + double e1f = e1 ? 2.0 : -1.0; + double e2f = e2 ? 2.0 : -1.0; + glVertexAttrib3d(shaderinfo[3], e0f, e1f, e2f); + glVertexAttrib3d(shaderinfo[4], p1->x, p1->y, p1->z); + glVertexAttrib3d(shaderinfo[5], p2->x, p2->y, p2->z); + glVertexAttrib3d(shaderinfo[6], 0.0, 1.0, 0.0); + glVertex3d(p0->x, p0->y, p0->z); + glVertexAttrib3d(shaderinfo[3], e0f, e1f, e2f); + glVertexAttrib3d(shaderinfo[4], p0->x, p0->y, p0->z); + glVertexAttrib3d(shaderinfo[5], p2->x, p2->y, p2->z); + glVertexAttrib3d(shaderinfo[6], 0.0, 0.0, 1.0); + glVertex3d(p1->x, p1->y, p1->z); + glVertexAttrib3d(shaderinfo[3], e0f, e1f, e2f); + glVertexAttrib3d(shaderinfo[4], p0->x, p0->y, p0->z); + glVertexAttrib3d(shaderinfo[5], p1->x, p1->y, p1->z); + glVertexAttrib3d(shaderinfo[6], 1.0, 0.0, 0.0); + glVertex3d(p2->x, p2->y, p2->z); + } + else +#endif + { + glVertex3d(p0->x, p0->y, p0->z); + glVertex3d(p1->x, p1->y, p1->z); + glVertex3d(p2->x, p2->y, p2->z); + } +} + void PolySet::render_surface(colormode_e colormode, GLint *shaderinfo) const { if (colormode == COLOR_MATERIAL) { glColor3ub(249, 215, 44); +#ifdef ENABLE_OPENCSG if (shaderinfo) { glUniform4f(shaderinfo[1], 249 / 255.0, 215 / 255.0, 44 / 255.0, 1.0); glUniform4f(shaderinfo[2], 255 / 255.0, 236 / 255.0, 94 / 255.0, 1.0); } +#endif /* ENABLE_OPENCSG */ } if (colormode == COLOR_CUTOUT) { glColor3ub(157, 203, 81); +#ifdef ENABLE_OPENCSG if (shaderinfo) { glUniform4f(shaderinfo[1], 157 / 255.0, 203 / 255.0, 81 / 255.0, 1.0); glUniform4f(shaderinfo[2], 171 / 255.0, 216 / 255.0, 86 / 255.0, 1.0); } +#endif /* ENABLE_OPENCSG */ + } +#ifdef ENABLE_OPENCSG + if (shaderinfo) { + glUniform1f(shaderinfo[7], shaderinfo[9]); + glUniform1f(shaderinfo[8], shaderinfo[10]); } +#endif /* ENABLE_OPENCSG */ for (int i = 0; i < polygons.size(); i++) { const Polygon *poly = &polygons[i]; - glBegin(GL_TRIANGLES); - for (int j = 2; j < poly->size(); j++) { - const Point *p0 = &poly->at(0); - const Point *p1 = &poly->at(j-1); - const Point *p2 = &poly->at(j); - if (shaderinfo) { - double e0 = j == 2 ? 1.0 : 0.0; - double e2 = j == poly->size()-1 ? 1.0 : 0.0; - glVertexAttrib3d(shaderinfo[3], e0, 0.0, e2); - glVertex3d(p0->x, p0->y, p0->z); - glVertexAttrib3d(shaderinfo[3], e0, 1.0, 0.0); - glVertex3d(p1->x, p1->y, p1->z); - glVertexAttrib3d(shaderinfo[3], 0.0, 1.0, e2); - glVertex3d(p2->x, p2->y, p2->z); - } else { - glVertex3d(p0->x, p0->y, p0->z); - glVertex3d(p1->x, p1->y, p1->z); - glVertex3d(p2->x, p2->y, p2->z); + if (poly->size() == 3) { + gl_draw_triangle(shaderinfo, &poly->at(0), &poly->at(1), &poly->at(2), true, true, true); + } + else if (poly->size() == 4) { + gl_draw_triangle(shaderinfo, &poly->at(0), &poly->at(1), &poly->at(3), true, false, true); + gl_draw_triangle(shaderinfo, &poly->at(2), &poly->at(3), &poly->at(1), true, false, true); + } + else { + Point center; + for (int j = 0; j < poly->size(); j++) { + center.x += poly->at(j).x; + center.y += poly->at(j).y; + center.z += poly->at(j).z; + } + center.x /= poly->size(); + center.y /= poly->size(); + center.z /= poly->size(); + for (int j = 1; j <= poly->size(); j++) { + gl_draw_triangle(shaderinfo, ¢er, &poly->at(j - 1), &poly->at(j % poly->size()), false, true, false); } } glEnd(); |