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20 TypeHandle BulletHeightfieldShape::_type_handle;
27 BulletHeightfieldShape::
28 BulletHeightfieldShape(
const PNMImage &image, PN_stdfloat max_height, BulletUpAxis up) :
29 _max_height(max_height), _up(up) {
34 _data =
new btScalar[_num_rows * _num_cols];
36 for (
int row=0; row < _num_rows; row++) {
37 for (
int column=0; column < _num_cols; column++) {
39 _data[_num_rows * column + row] =
41 max_height * image.
get_bright(row, _num_cols - column - 1);
45 _shape =
new btHeightfieldTerrainShape(_num_rows,
51 _shape->setUserPointer(
this);
57 btCollisionShape *BulletHeightfieldShape::
66 void BulletHeightfieldShape::
67 set_use_diamond_subdivision(
bool flag) {
70 return _shape->setUseDiamondSubdivision(flag);
79 BulletHeightfieldShape::
80 BulletHeightfieldShape(
Texture *tex, PN_stdfloat max_height, BulletUpAxis up) :
81 _max_height(max_height), _up(up) {
85 _data =
new btScalar[_num_rows * _num_cols];
87 btScalar step_x = 1.0 / (btScalar)tex->
get_x_size();
88 btScalar step_y = 1.0 / (btScalar)tex->
get_y_size();
93 for (
int row=0; row < _num_rows; row++) {
94 for (
int column=0; column < _num_cols; column++) {
95 if (!peeker->lookup_bilinear(sample, row * step_x, column * step_y)) {
96 bullet_cat.error() <<
"Could not sample texture." << std::endl;
99 _data[_num_rows * column + row] = max_height * sample.get_x();
103 _shape =
new btHeightfieldTerrainShape(_num_rows,
109 _shape->setUserPointer(
this);
115 BulletHeightfieldShape::
119 _num_rows = copy._num_rows;
120 _num_cols = copy._num_cols;
121 _max_height = copy._max_height;
124 size_t size = (size_t)_num_rows * (
size_t)_num_cols;
125 _data =
new btScalar[size];
126 memcpy(_data, copy._data, size *
sizeof(btScalar));
128 _shape =
new btHeightfieldTerrainShape(_num_rows,
134 _shape->setUserPointer(
this);
160 size_t size = (size_t)_num_rows * (
size_t)_num_cols;
161 for (
size_t i = 0; i < size; ++i) {
179 param->fillin(scan, manager);
188 void BulletHeightfieldShape::
191 nassertv(_shape ==
nullptr);
196 _up = (BulletUpAxis) scan.
get_int8();
201 size_t size = (size_t)_num_rows * (
size_t)_num_cols;
203 _data =
new btScalar[size];
205 for (
size_t i = 0; i < size; ++i) {
209 _shape =
new btHeightfieldTerrainShape(_num_rows,
215 _shape->setUserPointer(
this);
216 _shape->setMargin(margin);
Similar to MutexHolder, but for a light mutex.
static void register_with_read_factory()
Tells the BamReader how to create objects of type BulletShape.
int32_t get_int32()
Extracts a signed 32-bit integer.
float get_bright(int x, int y) const
Returns the linear brightness of the given xel, as a linearized float in the range 0....
A class to retrieve the individual data elements previously stored in a Datagram.
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
static WritableFactory * get_factory()
Returns the global WritableFactory for generating TypedWritable objects.
Represents a texture object, which is typically a single 2-d image but may also represent a 1-d or 3-...
get_x_size
Returns the width of the texture image in texels.
Base class for objects that can be written to and read from Bam files.
The name of this class derives from the fact that we originally implemented it as a layer on top of t...
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
PN_stdfloat get_stdfloat()
Extracts either a 32-bit or a 64-bit floating-point number, according to Datagram::set_stdfloat_doubl...
void add_stdfloat(PN_stdfloat value)
Adds either a 32-bit or a 64-bit floating-point number, according to set_stdfloat_double().
TypeHandle is the identifier used to differentiate C++ class types.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
An instance of this class is passed to the Factory when requesting it to do its business and construc...
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
int8_t get_int8()
Extracts a signed 8-bit integer.
void register_factory(TypeHandle handle, CreateFunc *func, void *user_data=nullptr)
Registers a new kind of thing the Factory will be able to create.
void add_int32(int32_t value)
Adds a signed 32-bit integer to the datagram.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
An instance of this object is returned by Texture::peek().
void add_int8(int8_t value)
Adds a signed 8-bit integer to the datagram.
virtual void fillin(DatagramIterator &scan, BamReader *manager)
This internal function is intended to be called by each class's make_from_bam() method to read in all...
get_y_size
Returns the height of the texture image in texels.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void parse_params(const FactoryParams ¶ms, DatagramIterator &scan, BamReader *&manager)
Takes in a FactoryParams, passed from a WritableFactory into any TypedWritable's make function,...