35 ScissorEffect(
bool screen,
const LVecBase4 &frame,
36 const PointDef *points,
int num_points,
bool clip) :
37 _screen(screen), _frame(frame), _clip(clip)
39 _points.reserve(num_points);
40 for (
int i = 0; i < num_points; ++i) {
41 _points.push_back(points[i]);
50 _screen(copy._screen),
52 _points(copy._points),
63 make_screen(
const LVecBase4 &frame,
bool clip) {
65 return return_new(effect);
74 make_node(
bool clip) {
76 return return_new(effect);
86 make_node(
const LPoint3 &a,
const LPoint3 &b,
const NodePath &node) {
89 points[0]._node = node;
91 points[1]._node = node;
93 return return_new(effect);
103 make_node(
const LPoint3 &a,
const LPoint3 &b,
const LPoint3 &c,
const LPoint3 &d,
const NodePath &node) {
106 points[0]._node = node;
108 points[1]._node = node;
110 points[2]._node = node;
112 points[3]._node = node;
114 return return_new(effect);
126 add_point(
const LPoint3 &p,
const NodePath &node)
const {
132 effect->_points.push_back(point);
133 return return_new(effect);
140 xform(
const LMatrix4 &mat)
const {
146 for (pi = effect->_points.begin();
147 pi != effect->_points.end();
149 PointDef &point = (*pi);
150 if (point._node.is_empty()) {
151 point._p = point._p * mat;
154 return return_new(effect);
161 output(std::ostream &out)
const {
162 out << get_type() <<
":";
164 out <<
"screen [" << _frame <<
"]";
167 Points::const_iterator pi;
168 for (pi = _points.begin(); pi != _points.end(); ++pi) {
169 const PointDef &point = (*pi);
170 if (point._node.is_empty()) {
171 out <<
" (" << point._p <<
")";
173 out <<
" (" << point._node <<
":" << point._p <<
")";
188 has_cull_callback()
const {
210 CPT(
TransformState) modelview_transform = data.get_modelview_transform(trav);
211 CPT(
TransformState) net_transform = modelview_transform->compose(node_transform);
212 if (net_transform->is_singular()) {
221 LMatrix4 net_mat = net_transform->get_mat() * proj_mat;
223 bool any_points =
false;
225 Points::const_iterator pi;
226 for (pi = _points.begin(); pi != _points.end(); ++pi) {
227 const PointDef &point = (*pi);
228 LVecBase4 pv(point._p[0], point._p[1], point._p[2], 1.0f);
229 if (point._node.is_empty()) {
235 LMatrix4 other_mat = point._node.get_net_transform()->get_mat() * proj_mat;
242 LPoint3 pr(pv[0] / pv[3], pv[1] / pv[3], pv[2] / pv[3]);
250 frame[0] = min(frame[0], pr[0]);
251 frame[1] = max(frame[1], pr[0]);
252 frame[2] = min(frame[2], pr[1]);
253 frame[3] = max(frame[3], pr[1]);
258 frame[0] = (frame[0] + 1.0f) * 0.5f;
259 frame[1] = (frame[1] + 1.0f) * 0.5f;
260 frame[2] = (frame[2] + 1.0f) * 0.5f;
261 frame[3] = (frame[3] + 1.0f) * 0.5f;
265 frame[0] = max(min(frame[0], (PN_stdfloat)1.0), (PN_stdfloat)0.0);
266 frame[1] = max(min(frame[1], (PN_stdfloat)1.0), frame[0]);
267 frame[2] = max(min(frame[2], (PN_stdfloat)1.0), (PN_stdfloat)0.0);
268 frame[3] = max(min(frame[3], (PN_stdfloat)1.0), frame[2]);
271 CPT(
RenderAttrib) scissor_attrib = ScissorAttrib::make(frame);
272 CPT(
RenderState) state = RenderState::make(scissor_attrib);
273 node_state = node_state->compose(state);
279 if (frustum !=
nullptr) {
280 frustum->xform(modelview_transform->get_inverse()->get_mat());
281 data._view_frustum = frustum;
300 DCAST_INTO_R(ta, other, 0);
302 if (_screen != ta->_screen) {
303 return (
int)_screen - (int)ta->_screen;
305 if (_clip != ta->_clip) {
306 return (
int)_clip - (int)ta->_clip;
309 int compare = _frame.compare_to(ta->_frame);
314 int compare = (int)_points.size() - (int)ta->_points.size();
318 for (
size_t i = 0; i < _points.size(); ++i) {
319 compare = _points[i]._p.compare_to(ta->_points[i]._p);
323 compare = _points[i]._node.compare_to(ta->_points[i]._node);
336 register_with_read_factory() {
350 _frame.write_datagram(dg);
353 Points::const_iterator pi;
354 for (pi = _points.begin(); pi != _points.end(); ++pi) {
355 (*pi)._p.write_datagram(dg);
373 effect->fillin(scan, manager);
384 RenderEffect::fillin(scan, manager);
388 _frame.read_datagram(scan);
391 _points.reserve(num_points);
392 for (
int i = 0; i < num_points; ++i) {
394 point._p.read_datagram(scan);
395 _points.push_back(point);
406 make_frustum(
const Lens *lens,
const LVecBase4 &frame)
const{
408 LVecBase4 f2(frame[0] * 2.0f - 1.0f,
409 frame[1] * 2.0f - 1.0f,
410 frame[2] * 2.0f - 1.0f,
411 frame[3] * 2.0f - 1.0f);
413 LPoint3 fll, flr, ful, fur;
414 LPoint3 nll, nlr, nul, nur;
417 corner[0] = f2[0]; corner[1] = f2[3];
420 if (!lens->
extrude(corner, nul, ful)) {
424 corner[0] = f2[1]; corner[1] = f2[3];
427 if (!lens->
extrude(corner, nur, fur)) {
431 corner[0] = f2[1]; corner[1] = f2[2];
434 if (!lens->
extrude(corner, nlr, flr)) {
438 corner[0] = f2[0]; corner[1] = f2[2];
441 if (!lens->
extrude(corner, nll, fll)) {