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move matrix computation

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This commit is contained in:
David Rose 2005-01-13 05:54:01 +00:00
parent d7d049375c
commit 63ee254de2
3 changed files with 35 additions and 5 deletions
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31
panda/src/parametrics/nurbsCurveEvaluator.cxx
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@ -173,6 +173,37 @@ evaluate(const NodePath &rel_to) const {
(int)_vertices.size());
}
////////////////////////////////////////////////////////////////////
// Function: NurbsCurveEvaluator::evaluate
// Access: Published
// Description: Returns a NurbsCurveResult object that represents the
// result of applying the knots to all of the current
// values of the vertices, transformed into the
// indicated coordinate space, and then further
// transformed by the indicated matrix.
////////////////////////////////////////////////////////////////////
PT(NurbsCurveResult) NurbsCurveEvaluator::
evaluate(const NodePath &rel_to, const LMatrix4f &mat) const {
if (_basis_dirty) {
((NurbsCurveEvaluator *)this)->recompute_basis();
}
// First, transform the vertices as appropriate.
pvector<LVecBase4f> vecs;
get_vertices(vecs, rel_to);
// And then apply the indicated matrix.
pvector<LVecBase4f>::iterator vi;
for (vi = vecs.begin(); vi != vecs.end(); ++vi) {
(*vi) = (*vi) * mat;
}
// And apply those transformed vertices to the basis matrices to
// derive the result.
return new NurbsCurveResult(_basis, &vecs[0], &_vertices[0],
(int)_vertices.size());
}
////////////////////////////////////////////////////////////////////
// Function: NurbsCurveEvaluator::output
// Access: Published

2
panda/src/parametrics/nurbsCurveEvaluator.h
View File

@ -78,6 +78,8 @@ PUBLISHED:
INLINE int get_num_segments() const;
PT(NurbsCurveResult) evaluate(const NodePath &rel_to = NodePath()) const;
PT(NurbsCurveResult) evaluate(const NodePath &rel_to,
const LMatrix4f &mat) const;
void output(ostream &out) const;

7
panda/src/parametrics/ropeNode.cxx
View File

@ -154,7 +154,8 @@ cull_callback(CullTraverser *trav, CullTraverserData &data) {
if (get_num_subdiv() > 0) {
NurbsCurveEvaluator *curve = get_curve();
if (curve != (NurbsCurveEvaluator *)NULL) {
PT(NurbsCurveResult) result = curve->evaluate(data._node_path.get_node_path());
PT(NurbsCurveResult) result =
curve->evaluate(data._node_path.get_node_path(), get_matrix());
if (result->get_num_segments() > 0) {
switch (get_render_mode()) {
@ -555,12 +556,9 @@ get_connected_segments(RopeNode::CurveSegments &curve_segments,
CurveSegment *curve_segment = NULL;
LPoint3f last_point;
const LMatrix4f &matrix = get_matrix();
for (int segment = 0; segment < num_segments; ++segment) {
LPoint3f point;
result->eval_segment_point(segment, 0.0f, point);
point = point * matrix;
if (curve_segment == (CurveSegment *)NULL ||
!point.almost_equal(last_point)) {
@ -586,7 +584,6 @@ get_connected_segments(RopeNode::CurveSegments &curve_segments,
CurveVertex vtx;
result->eval_segment_point(segment, t, vtx._p);
vtx._p = vtx._p * matrix;
vtx._t = result->get_segment_t(segment, t);
if (use_vertex_color) {
result->eval_segment_extended_points(segment, t, 0, &vtx._c[0], 4);