tavli: a0d30f6f20d4 src/board.cc

tavli

view src/board.cc @ 6:a0d30f6f20d4

- texture coordinate generation in class Mesh - wood texture

author	John Tsiombikas <nuclear@member.fsf.org>
date	Fri, 26 Jun 2015 04:22:06 +0300
parents	e48b40a3c82a
children	f1ecc2439802

line source

1 #include "opengl.h"

2 #include "board.h"

3 #include "meshgen.h"

4 #include "pnoise.h"

6 Board::Board()

7 {

8 puck_obj = 0;

9 clear();

10 }

12 Board::~Board()

13 {

14 destroy();

15 }

17 bool Board::init()

18 {

19 if(!generate_textures()) {

20 return false;

21 }

22 if(!generate()) {

23 return false;

24 }

26 return true;

27 }

29 void Board::destroy()

30 {

31 for(size_t i=0; i<obj.size(); i++) {

32 delete obj[i];

33 }

34 obj.clear();

36 delete puck_obj;

37 puck_obj = 0;

38 }

40 void Board::clear()

41 {

42 memset(slots, 0, sizeof slots);

43 }

45 void Board::draw() const

46 {

47 for(size_t i=0; i<obj.size(); i++) {

48 obj[i]->draw();

49 }

50 }

52 #define HSIZE 1.0

53 #define VSIZE (2.0 * HSIZE)

54 #define BOT_THICKNESS (HSIZE * 0.01)

55 #define WALL_THICKNESS (HSIZE * 0.05)

56 #define WALL_HEIGHT (HSIZE * 0.1)

57 #define GAP (HSIZE * 0.025)

58 #define HINGE_RAD (GAP * 0.5)

59 #define HINGE_HEIGHT (VSIZE * 0.075)

61 bool Board::generate()

62 {

63 Mesh tmp;

64 Matrix4x4 xform;

66 obj.clear();

68 for(int i=0; i<2; i++) {

69 int sign = i * 2 - 1;

71 // generate bottom

72 Mesh *bottom = new Mesh;

73 gen_box(bottom, HSIZE, BOT_THICKNESS, HSIZE * 2.0);

74 xform.set_translation(Vector3(0, -BOT_THICKNESS / 2.0, 0));

75 bottom->apply_xform(xform);

77 Object *obottom = new Object;

78 obottom->set_mesh(bottom);

79 obottom->xform().set_translation(Vector3(sign * (HSIZE / 2.0 + WALL_THICKNESS + HINGE_RAD * 0.25), 0, 0));

80 obottom->set_texture(img_field.texture());

81 obj.push_back(obottom);

84 // generate the 4 sides

85 Mesh *sides = new Mesh;

86 gen_box(sides, WALL_THICKNESS, WALL_HEIGHT, VSIZE + WALL_THICKNESS * 2);

87 xform.set_translation(Vector3(-(HSIZE + WALL_THICKNESS) / 2.0,

88 WALL_HEIGHT / 2.0 - BOT_THICKNESS, 0));

89 sides->apply_xform(xform);

91 gen_box(&tmp, WALL_THICKNESS, WALL_HEIGHT, VSIZE + WALL_THICKNESS * 2);

92 xform.set_translation(Vector3((HSIZE + WALL_THICKNESS) / 2.0,

93 WALL_HEIGHT / 2.0 - BOT_THICKNESS, 0));

94 tmp.apply_xform(xform);

95 sides->append(tmp);

96 tmp.clear();

98 gen_box(&tmp, HSIZE, WALL_HEIGHT, WALL_THICKNESS);

99 xform.set_translation(Vector3(0, WALL_HEIGHT / 2.0 - BOT_THICKNESS,

100 (VSIZE + WALL_THICKNESS) / 2.0));

101 tmp.apply_xform(xform);

102 sides->append(tmp);

103 tmp.clear();

104

105 gen_box(&tmp, HSIZE, WALL_HEIGHT, WALL_THICKNESS);

106 xform.set_translation(Vector3(0, WALL_HEIGHT / 2.0 - BOT_THICKNESS,

107 -(VSIZE + WALL_THICKNESS) / 2.0));

108 tmp.apply_xform(xform);

109 sides->append(tmp);

110 tmp.clear();

111

112 // generate texture coordinates

113 sides->texcoord_gen_box();

114

115 Object *osides = new Object;

116 osides->set_mesh(sides);

117 osides->xform() = obottom->xform();

118 osides->set_texture(img_wood.texture());

119 osides->tex_xform().set_scaling(Vector3(2, 2, 2));

120 osides->tex_xform().rotate(-Vector3(1, 0, 0.5), M_PI / 4.0);

121 obj.push_back(osides);

122

123 }

124

125

126 // generate the hinges

127 Mesh *hinges = new Mesh;

128 gen_cylinder(hinges, HINGE_RAD, HINGE_HEIGHT, 10, 1, 1);

129 xform.reset_identity();

130 xform.translate(Vector3(0, WALL_HEIGHT - HINGE_RAD * 0.5, VSIZE / 4.0));

131 xform.rotate(Vector3(M_PI / 2.0, 0, 0));

132 hinges->apply_xform(xform);

133

134 gen_cylinder(&tmp, HINGE_RAD, HINGE_HEIGHT, 10, 1, 1);

135 xform.reset_identity();

136 xform.translate(Vector3(0, WALL_HEIGHT - HINGE_RAD * 0.5, -VSIZE / 4.0));

137 xform.rotate(Vector3(M_PI / 2.0, 0, 0));

138 tmp.apply_xform(xform);

139

140 hinges->append(tmp);

141

142 Object *ohinges = new Object;

143 ohinges->set_mesh(hinges);

144 obj.push_back(ohinges);

145

146 // debug object

147 /*Mesh *dbgmesh = new Mesh;

148 gen_box(dbgmesh, 0.5, 0.5, 0.5);

149 xform.set_translation(Vector3(0, 0.4, 0));

150 xform.set_scaling(Vector3(4, 1, 4));

151 dbgmesh->apply_xform(xform);

152 Object *dbgobj = new Object;

153 dbgobj->set_mesh(dbgmesh);

154 dbgobj->set_texture(img_wood.texture());

155 dbgobj->tex_xform().set_scaling(Vector3(3, 3, 3));

156 obj.push_back(dbgobj);*/

157

158 return true;

159 }

160

161 static float wood(float x, float y)

162 {

163 float u = x;

164 float v = y;

165 x += 1.0;

166 x *= 10.0;

167 y *= 20.0;

168

169 float len = sqrt(x * x + y * y) + turbulence2(u * 6.0, v * 12.0, 2) * 1.2 +

170 turbulence2(u * 0.5, v, 2) * 15.0;

171 float val = fmod(len, 1.0);

172

173 //val = val * 0.5 + 0.5;

174 return val < 0.0 ? 0.0 : (val > 1.0 ? 1.0 : val);

175 }

176

177 static float wood_tile(float x, float y)

178 {

179 float u = x;

180 float v = y;

181 x *= 10.0;

182 y *= 10.0;

183

184 float val = x + pnoise2(u * 6.0, v, 6, 1) * 3.0 +

185 pturbulence2(u * 4, v * 2, 4, 2, 2) * 1.5 + pturbulence2(u * 8, v * 8, 8, 8, 2) * 0.5;

186

187 val = fmod(val, 1.0);

188 return val < 0.0 ? 0.0 : (val > 1.0 ? 1.0 : val);

189 }

190

191 static bool spike(float x, float y)

192 {

193 x = fmod(x * 5.0, 1.0);

194 return y < (x < 0.5 ? 2.0 * x : 2.0 - 2.0 * x);

195 }

196

197 static bool circle(float x, float y, float rad)

198 {

199 x = fmod(x * 5.0, 1.0) - 0.5;

200 y = (y - 0.65) * 5.0;

201 float len = sqrt(x * x + y * y);

202 return len < rad;

203 }

204

205 static bool diamond(float x, float y)

206 {

207 return y >= (1.0 - (x < 0.5 ? 2.0 * x : 2.0 - 2.0 * x)) * 0.3333333 + 0.88;

208 }

209

210 static bool center_circle(float x, float y, float rad)

211 {

212 x = x - 0.5;

213 y = 1.0 - y;

214 return sqrt(x * x + y * y) < rad;

215 }

216

217 bool Board::generate_textures()

218 {

219 // ---- board field texture ----

220 static const Vector3 wcol1 = Vector3(0.6, 0.4, 0.2);

221 static const Vector3 wcol2 = Vector3(0.53, 0.32, 0.1);

222 static const Vector3 wcol3 = Vector3(0.38, 0.25, 0.08);

223

224 img_field.create(512, 1024);

225 unsigned char *pptr = img_field.pixels;

226 for(int i=0; i<img_field.height; i++) {

227 float v = (float)i / (float)img_field.height;

228

229 for(int j=0; j<img_field.width; j++) {

230 float u = (float)j / (float)img_field.width;

231

232 int r = 0, g = 0, b = 0;

233

234 float wood_val = wood(u, v);

235

236 // pattern mask

237 float x = u;

238 float y = v < 0.5 ? v * 2.0 : 2.0 - v * 2.0;

239 bool inside = false;

240

241 inside |= (spike(x, y + 0.33333) && !spike(x, y + 0.4)) ||

242 (spike(x, y + 0.5) && !spike(x, y + 0.68));

243 inside |= (circle(x, y, 0.12) && !circle(x, y, 0.1)) || circle(x, y, 0.06);

244 inside |= (diamond(x, y) && !diamond(x, y - 0.015)) ||

245 (diamond(x, y - 0.023) && !diamond(x, y - 0.028));

246 inside |= center_circle(x, y, 0.03);

247

248 Vector3 wood_color = lerp(wcol1, wcol2, wood_val) * 0.9;

249 if(inside) {

250 wood_color = lerp(wcol1, wcol2, 1.0 - wood_val) * 2.0;

251 }

252

253 r = (int)(wood_color.x * 255.0);

254 g = (int)(wood_color.y * 255.0);

255 b = (int)(wood_color.z * 255.0);

256

257 pptr[0] = r > 255 ? 255 : r;

258 pptr[1] = g > 255 ? 255 : g;

259 pptr[2] = b > 255 ? 255 : b;

260 pptr += 3;

261 }

262 }

263 img_field.texture();

264

265 // ---- generic wood texture ----

266 img_wood.create(256, 256);

267 pptr = img_wood.pixels;

268 for(int i=0; i<img_wood.height; i++) {

269 float v = (float)i / (float)img_wood.height;

270 for(int j=0; j<img_wood.width; j++) {

271 float u = (float)j / (float)img_wood.width;

272

273 float wood_val = wood_tile(u, v);

274 Vector3 wood_color = lerp(wcol2, wcol3, wood_val) * 0.7;

275

276 int r = (int)(wood_color.x * 255.0);

277 int g = (int)(wood_color.y * 255.0);

278 int b = (int)(wood_color.z * 255.0);

279

280 pptr[0] = r > 255 ? 255 : r;

281 pptr[1] = g > 255 ? 255 : g;

282 pptr[2] = b > 255 ? 255 : b;

283 pptr += 3;

284 }

285 }

286 img_wood.texture();

287 return true;

288 }