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Code Issues 123 Wiki Activity

basic indexed geometry support, geometry data packing

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This commit is contained in:
tmj-fstate
2020-10-18 03:08:59 +02:00
parent af3a724ede
commit 5d252745bd
17 changed files with 975 additions and 512 deletions
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43
sn_utils.cpp
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@@ -38,6 +38,18 @@ int32_t sn_utils::ld_int32(std::istream &s)
return reinterpret_cast<int32_t&>(v);
}
// deserialize little endian uint64
uint64_t sn_utils::ld_uint64(std::istream &s)
{
uint8_t buf[8];
s.read((char*)buf, 8);
uint64_t v = ((uint64_t)buf[7] << 56) | ((uint64_t)buf[6] << 48) |
((uint64_t)buf[5] << 40) | ((uint64_t)buf[4] << 32) |
((uint64_t)buf[3] << 24) | ((uint64_t)buf[2] << 16) |
((uint64_t)buf[1] << 8) | (uint64_t)buf[0];
return reinterpret_cast<uint64_t&>(v);
}
// deserialize little endian int64
int64_t sn_utils::ld_int64(std::istream &s)
{
@@ -100,7 +112,7 @@ glm::dvec3 sn_utils::d_dvec3(std::istream& s)
ld_float64(s) };
}
glm::vec3 sn_utils::d_vec3( std::istream& s)
glm::vec3 sn_utils::d_vec3( std::istream& s )
{
return {
ld_float32(s),
@@ -108,7 +120,7 @@ glm::vec3 sn_utils::d_vec3( std::istream& s)
ld_float32(s) };
}
glm::vec4 sn_utils::d_vec4( std::istream& s)
glm::vec4 sn_utils::d_vec4( std::istream& s )
{
return {
ld_float32(s),
@@ -117,6 +129,14 @@ glm::vec4 sn_utils::d_vec4( std::istream& s)
ld_float32(s) };
}
uint8_t sn_utils::d_uint8( std::istream& s ) {
uint8_t buf;
s.read((char*)buf, 1);
return buf;
}
void sn_utils::ls_uint16(std::ostream &s, uint16_t v)
{
uint8_t buf[2];
@@ -145,6 +165,20 @@ void sn_utils::ls_int32(std::ostream &s, int32_t v)
s.write((char*)buf, 4);
}
void sn_utils::ls_uint64(std::ostream &s, uint64_t v)
{
uint8_t buf[8];
buf[0] = v;
buf[1] = v >> 8;
buf[2] = v >> 16;
buf[3] = v >> 24;
buf[4] = v >> 32;
buf[5] = v >> 40;
buf[6] = v >> 48;
buf[7] = v >> 56;
s.write((char*)buf, 8);
}
void sn_utils::ls_int64(std::ostream &s, int64_t v)
{
uint8_t buf[8];
@@ -185,6 +219,11 @@ void sn_utils::ls_float64(std::ostream &s, double t)
s.write((char*)buf, 8);
}
void sn_utils::s_uint8(std::ostream &s, uint8_t v)
{
s.write((char*)v, 1);
}
void sn_utils::s_str(std::ostream &s, std::string v)
{
const char* buf = v.c_str();