Panda3D

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meshDrawer2D.cxx
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file meshDrawer2D.cxx
10 * @author treeform
11 * @date 2008-12-19
12 */
13
14#include "meshDrawer2D.h"
15
16#include "geomVertexFormat.h"
17#include "geomVertexArrayFormat.h"
18#include "geomVertexData.h"
19#include "geomVertexWriter.h"
20#include "geomVertexRewriter.h"
21#include "camera.h"
22#include "boundingSphere.h"
23#include "geomTristrips.h"
24#include "geomTriangles.h"
25#include "geom.h"
26#include "geomNode.h"
27#include "pnmPainter.h"
28#include "pnmBrush.h"
29#include "lvecBase4.h"
30#include "lvector3.h"
31#include "pandaNode.h"
32
33 TypeHandle MeshDrawer2D::_type_handle;
34
35
36#define RANDF ((PN_stdfloat) rand() / (PN_stdfloat) 0x7fffffff)
37
38
39/**
40 * Creates a system with a given budget.
41 */
42 void MeshDrawer2D::generator(int budget) {
43 // create enough triangles for budget:
44 _vdata = new GeomVertexData(_root.get_name(), GeomVertexFormat::get_v3c4t2(), Geom::UH_static);//UH_dynamic);
45 GeomVertexWriter *tvertex = new GeomVertexWriter(_vdata, "vertex");
46 GeomVertexWriter *tuv = new GeomVertexWriter(_vdata, "texcoord");
47 GeomVertexWriter *tcolor = new GeomVertexWriter(_vdata, "color");
48 _prim = new GeomTriangles(Geom::UH_static);
49
50 // iterate and fill _up a geom with random data so that it will not be
51 // optimized out by panda3d system
52 for(int i = 0; i < budget; i++) {
53 for( int vert = 0; vert < 4; vert++) {
54
55 LVector3 vec3 = LVector3(RANDF+10000,RANDF,RANDF);
56 LVector4 vec4 = LVector4(RANDF,RANDF,RANDF,0);
57 LVector2 vec2 = LVector2(RANDF,RANDF);
58
59 tvertex->add_data3(vec3);
60 tcolor->add_data4(vec4);
61 tuv->add_data2(vec2);
62
63 }
64
65 _prim->add_vertices(i*4+0, i*4+1, i*4+2);
66 _prim->close_primitive();
67
68 _prim->add_vertices(i*4+1, i*4+2, i*4+3);
69 _prim->close_primitive();
70
71 }
72 // create our node and attach it to this node path
73 _geom = new Geom(_vdata);
74 _geom->add_primitive(_prim);
75 _geomnode = new GeomNode("__MeshDrawer_GeomNode");
76 _geomnode->add_geom(_geom);
77 _root.attach_new_node(_geomnode);
78 _last_clear_index = budget;
79
80 delete tvertex;
81 delete tuv;
82 delete tcolor;
83}
84
85/**
86 * Opens up the geom for drawing, don't forget to call MeshDrawer2D::end()
87 */
88 void MeshDrawer2D::begin() {
89
90 // recreate our rewriters
91 if (_vertex != nullptr) delete _vertex;
92 if (_uv != nullptr) delete _uv;
93 if (_color != nullptr) delete _color;
94
95 _vertex = new GeomVertexRewriter(_vdata, "vertex");
96 _uv = new GeomVertexRewriter(_vdata, "texcoord");
97 _color = new GeomVertexRewriter(_vdata, "color");
98 _dprim = _prim->decompose();
99
100 // reseta our clearning indexes
101 _start_clear_index = 0;
102 _end_clear_index = _budget;
103 _clear_index = _start_clear_index;
104
105}
106
107/**
108 * Finish the drawing and clearing off the remaining vertexes.
109 */
110 void MeshDrawer2D::end() {
111
112 // clear the unused triangles at the end of the buffer
113 for(int i = _clear_index ; i < _last_clear_index; i ++ ) {
114 _vertex->add_data3(0,0,0);
115 _vertex->add_data3(0,0,0);
116 _vertex->add_data3(0,0,0);
117 _vertex->add_data3(0,0,0);
118 }
119 // don't clear more then you have too
120 _last_clear_index = _clear_index;
121
122 // delete the re writers
123 delete _vertex; _vertex = nullptr;
124 delete _uv; _uv = nullptr;
125 delete _color; _color = nullptr;
126
127}
128
129
130
131/**
132 * Draws a tiled rectangle, size of tiles is in us and vs
133 */
134 void MeshDrawer2D::
135 rectangle_tiled(PN_stdfloat x, PN_stdfloat y, PN_stdfloat w, PN_stdfloat h,
136 PN_stdfloat u, PN_stdfloat v, PN_stdfloat us, PN_stdfloat vs,
137 const LVector4 &color
138) {
139
140 PN_stdfloat x_fit = w/us;
141 PN_stdfloat y_fit = h/vs;
142 PN_stdfloat x_pos = x;
143
144 while (x_fit > 0){
145 PN_stdfloat y_pos = y;
146 y_fit = h/vs;
147 while (y_fit > 0){
148
149 PN_stdfloat fixed_us = us;
150 PN_stdfloat fixed_vs = vs;
151
152 // we are cuttin in the middle of a tile x direction
153 if (x_fit < 1){
154 fixed_us = w;
155 while (fixed_us > us){
156 fixed_us -= us;
157 }
158 }
159
160 // we are cuttin in the middel of a tile y directon
161 if (y_fit < 1){
162 fixed_vs = h;
163 while (fixed_vs > vs){
164 fixed_vs -= vs;
165 }
166 }
167
168 rectangle(x_pos,y_pos,fixed_us,fixed_vs,u,v,fixed_us,fixed_vs,color);
169
170 y_pos += vs;
171 y_fit -= 1;
172 }
173 x_pos += us;
174 x_fit -= 1;
175 }
176
177
178}
179
180
181/**
182 * Draws a 2d rectangle, with borders and corders, taken from the surrounding
183 * texture
184 */
185 void MeshDrawer2D::
186 rectangle_border(
187 PN_stdfloat x, PN_stdfloat y, PN_stdfloat w, PN_stdfloat h,
188 PN_stdfloat r, PN_stdfloat t, PN_stdfloat l, PN_stdfloat b,
189 PN_stdfloat tr, PN_stdfloat tt, PN_stdfloat tl, PN_stdfloat tb,
190 PN_stdfloat u, PN_stdfloat v, PN_stdfloat us, PN_stdfloat vs,
191 const LVector4 &color){
192
193 rectangle(x,y,w,h,u,v,us,vs,color); // center
194
195 // -------------- ----------------- ------
196 rectangle(x, y+h, w, t, u, v+vs, us, tt, color); // N
197 rectangle(x, y-b, w, b, u, v-tb, us, tb, color); // S
198
199
200 rectangle(x-l, y, l, h, u-tl, v, tl, vs, color); // W
201 rectangle(x+w, y, r, h, r, v, tr, vs, color); // E
202
203/*
204 rectangle(x-l, y+h, l, t, u-tl, v, tl, tt, color); // NW
205 rectangle(x-l, y-b, l, b, u-tl, v-tb, tl, tb, color); // SW
206 rectangle(x+w, y+h, r, t, u, v, tr, tt, color); // NE
207 rectangle(x+w, y-b, r, b, u, v-tb, tr, tb, color); // SE
208*/
209}
210
211/**
212 * Draws a 2d rectangle, with borders and corders, taken from the surrounding
213 * texture
214 */
215 void MeshDrawer2D::
216 rectangle_border_tiled(
217 PN_stdfloat x, PN_stdfloat y, PN_stdfloat w, PN_stdfloat h,
218 PN_stdfloat r, PN_stdfloat t, PN_stdfloat l, PN_stdfloat b,
219 PN_stdfloat tr, PN_stdfloat tt, PN_stdfloat tl, PN_stdfloat tb,
220 PN_stdfloat u, PN_stdfloat v, PN_stdfloat us, PN_stdfloat vs,
221 const LVector4 &color){
222
223 rectangle_tiled(x,y,w,h,u,v,us,vs,color); // center
224
225 rectangle_tiled(x, y+h, w, t, u, v+t, us, t, color); // N
226 rectangle_tiled(x, y-b, w, b, u, v-b, us, b, color); // S
227 rectangle_tiled(x-l, y, l, h, u-l, v, l, vs, color); // W
228 rectangle_tiled(x+w, y, r, h, r, v, r, vs, color); // E
229
230 rectangle_tiled(x-l, y+h, l, t, u-l, v, l, t, color); // NW
231 rectangle_tiled(x-l, y-b, l, b, u-l, v-b, l, b, color); // SW
232 rectangle_tiled(x+w, y+h, r, t, u, v, r, t, color); // NE
233 rectangle_tiled(x+w, y-b, r, b, u, v-b, r, b, color); // SE
234}
boundingSphere.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
camera.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
GeomVertexFormat::get_v3c4t2
static const GeomVertexFormat * get_v3c4t2()
Returns a standard vertex format with a 2-component texture coordinate pair, a 4-component color,...
Definition geomVertexFormat.I:342
GeomVertexRewriter
This object provides the functionality of both a GeomVertexReader and a GeomVertexWriter,...
Definition geomVertexRewriter.h:33
GeomVertexWriter::add_data4
void add_data4(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z, PN_stdfloat w)
Sets the write row to a particular 4-component value, and advances the write row.
Definition geomVertexWriter.I:1164
GeomVertexWriter::add_data2
void add_data2(PN_stdfloat x, PN_stdfloat y)
Sets the write row to a particular 2-component value, and advances the write row.
Definition geomVertexWriter.I:1100
GeomVertexWriter::add_data3
void add_data3(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z)
Sets the write row to a particular 3-component value, and advances the write row.
Definition geomVertexWriter.I:1132
MeshDrawer2D::rectangle
void rectangle(PN_stdfloat x, PN_stdfloat y, PN_stdfloat w, PN_stdfloat h, PN_stdfloat u, PN_stdfloat v, PN_stdfloat us, PN_stdfloat vs, const LVector4 &color)
Draws a 2D rectangle which can be clipped.
Definition meshDrawer2D.I:131
MeshDrawer2D::rectangle_tiled
void rectangle_tiled(PN_stdfloat x, PN_stdfloat y, PN_stdfloat w, PN_stdfloat h, PN_stdfloat u, PN_stdfloat v, PN_stdfloat us, PN_stdfloat vs, const LVector4 &color)
Draws a tiled rectangle, size of tiles is in us and vs.
Definition meshDrawer2D.cxx:135
MeshDrawer2D::rectangle_border
void rectangle_border(PN_stdfloat x, PN_stdfloat y, PN_stdfloat w, PN_stdfloat h, PN_stdfloat r, PN_stdfloat t, PN_stdfloat l, PN_stdfloat b, PN_stdfloat tr, PN_stdfloat tt, PN_stdfloat tl, PN_stdfloat tb, PN_stdfloat u, PN_stdfloat v, PN_stdfloat us, PN_stdfloat vs, const LVector4 &color)
Draws a 2d rectangle, with borders and corders, taken from the surrounding texture.
Definition meshDrawer2D.cxx:186
MeshDrawer2D::end
void end()
Finish the drawing and clearing off the remaining vertexes.
Definition meshDrawer2D.cxx:110
MeshDrawer2D::begin
void begin()
Opens up the geom for drawing, don't forget to call MeshDrawer2D::end()
Definition meshDrawer2D.cxx:88
MeshDrawer2D::rectangle_border_tiled
void rectangle_border_tiled(PN_stdfloat x, PN_stdfloat y, PN_stdfloat w, PN_stdfloat h, PN_stdfloat r, PN_stdfloat t, PN_stdfloat l, PN_stdfloat b, PN_stdfloat tr, PN_stdfloat tt, PN_stdfloat tl, PN_stdfloat tb, PN_stdfloat u, PN_stdfloat v, PN_stdfloat us, PN_stdfloat vs, const LVector4 &color)
Draws a 2d rectangle, with borders and corders, taken from the surrounding texture.
Definition meshDrawer2D.cxx:216
TypeHandle
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
geomNode.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geomTriangles.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geomTristrips.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geomVertexArrayFormat.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geomVertexData.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geomVertexFormat.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geomVertexRewriter.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geomVertexWriter.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geom.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
lvecBase4.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
lvector3.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
meshDrawer2D.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pandaNode.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pnmBrush.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pnmPainter.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.