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396 jab 1 
#include <GL/glew.h>
2 
 
299 jrf 3 
#include "CGLA/Mat4x4f.h"
362 jab 4 
#include "CGLA/Vec3d.h"
167 jab 5 
#include "draw.h"
331 jab 6 
#include "HMesh/FaceCirculator.h"
167 jab 7 
 
396 jab 8 
#include "SinglePassWireframeRenderer.h"
9 
#include "IDBufferWireFrameRenderer.h"
10 
 
167 jab 11 
using namespace CGLA;
331 jab 12 
using namespace HMesh;
167 jab 13 
using namespace std;
14 
 
15 
namespace
16 
{
339 jab 17 
	void set_material(const Geometry::Material& material)
396 jab 18 
	{
368 jrf 19 
		if(material.has_texture && material.tex_id >=0)
339 jab 20 
		{
21 
			glEnable(GL_TEXTURE_2D);
22 
			glBindTexture(GL_TEXTURE_2D, material.tex_id);
23 
			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
24 
		}
25 
		else
26 
			glDisable(GL_TEXTURE_2D);
27 
 
28 
		glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, material.ambient);
29 
		glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, material.diffuse);
30 
		glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, material.specular);
31 
		glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, material.shininess);
396 jab 32 
	}
33 
 
167 jab 34 
}
35 
 
299 jrf 36 
namespace GLGraphics
37 
{
396 jab 38 
 
39 
	void draw(Manifold& m, bool per_vertex_norms)
339 jab 40 
	{
331 jab 41 
		for(FaceIter f=m.faces_begin(); f != m.faces_end(); ++f)
42 
		{
339 jab 43 
			FaceCirculator fc(f);
44 
			if(!per_vertex_norms)
45 
				glNormal3fv(normal(f).get());
362 jab 46 
			if(no_edges(f)== 3)
47 
				glBegin(GL_TRIANGLES);
48 
			else
49 
				glBegin(GL_POLYGON);
339 jab 50 
			while(!fc.end())
51 
			{
52 
				Vec3f n = normal(fc.get_vertex());
362 jab 53 
				if(per_vertex_norms)
54 
					glNormal3fv(n.get());
339 jab 55 
				glVertex3fv(fc.get_vertex()->pos.get());
56 
				++fc;
57 
			}
58 
			glEnd();
59 
		}
60 
	}
432 jab 61 
 
62 
	void draw(const Geometry::IndexedFaceSet& geometry)
63 
	{
64 
		glBegin(GL_TRIANGLES);
65 
		for(int i=0;i<geometry.no_faces();i++)
66 
		{
67 
				Vec3i g_face = geometry.face(i);
68 
				Vec3f vert0 = geometry.vertex(g_face[0]);
69 
				Vec3f vert1 = geometry.vertex(g_face[1]);
70 
				Vec3f vert2 = geometry.vertex(g_face[2]);
71 
				Vec3f norm = normalize(cross(vert1-vert0, vert2-vert0));
72 
				glNormal3fv(norm.get());
73 
				glVertex3fv(vert0.get());
74 
				glVertex3fv(vert1.get());
75 
				glVertex3fv(vert2.get());
76 
		}
77 
		glEnd();
78 
	}
339 jab 79 
 
80 
	void draw(const Geometry::TriMesh& tm, bool per_vertex_norms)
81 
	{
82 
		int old_mat_idx = -1;
83 
		glBegin(GL_TRIANGLES);
84 
		for(int i=0;i<tm.geometry.no_faces();i++)
85 
		{
373 jrf 86 
			int new_mat_idx = i<static_cast<int>(tm.mat_idx.size()) ? tm.mat_idx[i] : -1;
362 jab 87 
			if(new_mat_idx != old_mat_idx)
339 jab 88 
			{
89 
				glEnd();
90 
				set_material(tm.materials[tm.mat_idx[i]]);
91 
				glBegin(GL_TRIANGLES);
362 jab 92 
				old_mat_idx = new_mat_idx;
339 jab 93 
			}
94 
			Vec3i n_face = tm.normals.face(i);
95 
			Vec3i g_face = tm.geometry.face(i);
96 
			Vec3i t_face = tm.texcoords.face(i);
97 
 
98 
			if(!per_vertex_norms)
99 
			{
100 
				Vec3f vert0 = tm.geometry.vertex(g_face[0]);
101 
				Vec3f vert1 = tm.geometry.vertex(g_face[1]);
102 
				Vec3f vert2 = tm.geometry.vertex(g_face[2]);
103 
				Vec3f norm = normalize(cross(vert1-vert0, vert2-vert0));
104 
				glNormal3fv(norm.get());
105 
			}
106 
			for(int j=0;j<3;j++)
107 
			{
108 
				if(per_vertex_norms && n_face != Geometry::NULL_FACE)
331 jab 109 
				{
339 jab 110 
					Vec3f norm = tm.normals.vertex(n_face[j]);
111 
					glNormal3fv(norm.get());
331 jab 112 
				}
339 jab 113 
				if(t_face != Geometry::NULL_FACE)
331 jab 114 
				{
339 jab 115 
					Vec3f texc = tm.texcoords.vertex(t_face[j]);
116 
					glTexCoord2fv(texc.get());
331 jab 117 
				}
339 jab 118 
				Vec3f vert = tm.geometry.vertex(g_face[j]);
119 
				glVertex3fv(vert.get());
120 
			}
121 
		}
122 
		glEnd();
123 
		glDisable(GL_TEXTURE_2D);
124 
	}
125 
 
396 jab 126 
 
127 
 
128 
	template<class T>
129 
	void draw_wireframe_oldfashioned(T& m, bool per_vertex_norms, const Vec3f& line_color)
130 
	{
131 
		// Store state that we change
132 
		glPushAttrib(GL_POLYGON_BIT);
133 
		GLboolean lights_on;
134 
		glGetBooleanv(GL_LIGHTING, &lights_on);
135 
		Vec4f current_color;
136 
		glGetFloatv(GL_CURRENT_COLOR, &current_color[0]);
137 
 
138 
		// Draw filled
139 
		glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
140 
		draw(m, per_vertex_norms);
141 
 
142 
		// Draw lines
143 
		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
144 
		glDisable(GL_LIGHTING);
145 
		glEnable(GL_POLYGON_OFFSET_LINE);
146 
		glPolygonOffset(0,-5);
147 
		glColor3fv(line_color.get());
148 
		draw(m, per_vertex_norms);
149 
 
150 
		// Put back old state
151 
		glColor3fv(current_color.get());
152 
		if(lights_on) glEnable(GL_LIGHTING);
153 
		glPopAttrib();
154 
	}
155 
 
156 
	template
157 
	void draw_wireframe_oldfashioned<HMesh::Manifold>(HMesh::Manifold& m, bool per_vertex_norms, const Vec3f& line_color);
158 
 
159 
	template
160 
	void draw_wireframe_oldfashioned(Geometry::TriMesh& m, bool per_vertex_norms, const Vec3f& line_color);
161 
 
162 
 
339 jab 163 
	void draw(const Geometry::AABox& box)
164 
	{
165 
		glBegin(GL_QUADS);
166 
		Vec3f norm_neg[] = {Vec3f(0,0,-1), Vec3f(-1,0,0), Vec3f(0,-1,0)};
167 
		Vec3f norm_pos[] = {Vec3f(0,0, 1), Vec3f( 1,0,0), Vec3f(0, 1,0)};
168 
		for(int j=0;j<3;++j)
299 jrf 169 
		{
170 
			glNormal3fv(norm_neg[j].get());
171 
			Vec3f p = box.get_pmin();
172 
			glVertex3f(p[0], p[1], p[2]);
173 
			p[(j+1)%3] = box.get_pmax()[(j+1)%3];
174 
			glVertex3f(p[0], p[1], p[2]);
175 
			p[j] = box.get_pmax()[j];
176 
			glVertex3f(p[0], p[1], p[2]);
177 
			p[(j+1)%3] = box.get_pmin()[(j+1)%3];
178 
			glVertex3f(p[0], p[1], p[2]);
179 
		}
339 jab 180 
		glEnd();
181 
		glBegin(GL_QUADS);
182 
		for(int j=0;j<3;++j)
299 jrf 183 
		{
184 
			glNormal3fv(norm_pos[j].get());
185 
			Vec3f p = box.get_pmax();
186 
			glVertex3f(p[0], p[1], p[2]);
187 
			p[j] = box.get_pmin()[j];
188 
			glVertex3f(p[0], p[1], p[2]);
189 
			p[(j+1)%3] = box.get_pmin()[(j+1)%3];
190 
			glVertex3f(p[0], p[1], p[2]);
191 
			p[j] = box.get_pmax()[j];
192 
			glVertex3f(p[0], p[1], p[2]);
193 
		}
339 jab 194 
		glEnd();
195 
	}
196 
 
197 
	void draw(const Geometry::OBox& box)
198 
	{
199 
		Mat4x4f m = identity_Mat4x4f();
200 
		copy_matrix(box.get_rotation(), m);
201 
		glPushMatrix();
202 
		glMultMatrixf(m.get());
203 
		draw(box.get_aabox());
204 
		glPopMatrix();
205 
	}
206 
 
207 
	/** Draw the tree. The first argument is the level counter, the second
396 jab 208 
	 argument is the level at which to stop drawing. */
339 jab 209 
	template <class BoxType>
210 
	void draw(const Geometry::BoundingINode<BoxType>& node, int level, int max_level)
211 
	{
212 
		if(level == max_level)
213 
		{
214 
			draw(node);
215 
			return;
216 
		}
217 
		node->left->draw(level + 1, max_level);
218 
		node->right->draw(level + 1, max_level);
219 
	}
220 
 
221 
	template <class BoxType>
222 
	void draw(const Geometry::BoundingLNode<BoxType>& node, int level, int max_level)
223 
	{
299 jrf 224 
#if USE_LEAF_BOXES
339 jab 225 
		draw(node);
299 jrf 226 
#endif
339 jab 227 
	}
228 
 
229 
	template <class BoxType>
230 
	void draw(const Geometry::BoundingTree<BoxType>& tree, int max_level)
231 
	{
232 
		draw(*tree.root, 0, max_level);
233 
	}
299 jrf 234 
}