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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __BLI_FLOAT4X4_H__
#define __BLI_FLOAT4X4_H__
#include "BLI_array_ref.h"
#include "BLI_float3.h"
#include "BLI_math_matrix.h"
namespace BLI {
struct float4x4 {
float values[4][4];
float4x4() = default;
float4x4(float *matrix)
{
memcpy(values, matrix, sizeof(float) * 16);
}
float4x4(float matrix[4][4]) : float4x4((float *)matrix)
{
}
operator float *()
{
return (float *)this;
}
float4x4 inverted() const
{
float result[4][4];
invert_m4_m4(result, values);
return result;
}
float4x4 inverted__LocRotScale() const
{
return this->inverted();
}
float3 transform_position(float3 position) const
{
mul_m4_v3(values, position);
return position;
}
float3 transform_direction(float3 direction) const
{
mul_mat3_m4_v3(values, direction);
return direction;
}
static void transform_positions(ArrayRef<float4x4> matrices,
ArrayRef<float3> positions,
MutableArrayRef<float3> r_results)
{
uint amount = matrices.size();
BLI_assert(amount == positions.size());
BLI_assert(amount == r_results.size());
for (uint i = 0; i < amount; i++) {
r_results[i] = matrices[i].transform_position(positions[i]);
}
}
static void transform_directions(ArrayRef<float4x4> matrices,
ArrayRef<float3> directions,
MutableArrayRef<float3> r_results)
{
uint amount = matrices.size();
BLI_assert(amount == directions.size());
BLI_assert(amount == r_results.size());
for (uint i = 0; i < amount; i++) {
r_results[i] = matrices[i].transform_direction(directions[i]);
}
}
static float4x4 interpolate(float4x4 a, float4x4 b, float t)
{
float result[4][4];
interp_m4_m4m4(result, a.values, b.values, t);
return result;
}
};
} // namespace BLI
#endif /* __BLI_FLOAT4X4_H__ */
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