diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cpp')
-rw-r--r-- | source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cpp | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cpp b/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cpp new file mode 100644 index 00000000000..362d7f6d2d7 --- /dev/null +++ b/source/blender/compositor/operations/COM_PlaneDistortCommonOperation.cpp @@ -0,0 +1,194 @@ +/* + * Copyright 2013, Blender Foundation. + * + * 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. + * + * Contributor: + * Sergey Sharybin + * Lukas Toenne + */ + +#include "COM_PlaneDistortCommonOperation.h" + +#include "MEM_guardedalloc.h" + +extern "C" { +#include "BLI_listbase.h" +#include "BLI_math.h" +#include "BLI_math_color.h" +#include "BLI_jitter.h" + +#include "BKE_movieclip.h" +#include "BKE_node.h" +#include "BKE_tracking.h" +} + +/* ******** PlaneDistort WarpImage ******** */ + +BLI_INLINE void warpCoord(float x, float y, float matrix[3][3], float uv[2], float deriv[2][2]) +{ + float vec[3] = {x, y, 1.0f}; + mul_m3_v3(matrix, vec); + uv[0] = vec[0] / vec[2]; + uv[1] = vec[1] / vec[2]; + + deriv[0][0] = (matrix[0][0] - matrix[0][2] * uv[0]) / vec[2]; + deriv[1][0] = (matrix[0][1] - matrix[0][2] * uv[1]) / vec[2]; + deriv[0][1] = (matrix[1][0] - matrix[1][2] * uv[0]) / vec[2]; + deriv[1][1] = (matrix[1][1] - matrix[1][2] * uv[1]) / vec[2]; +} + +PlaneDistortWarpImageOperation::PlaneDistortWarpImageOperation() : + NodeOperation() +{ + this->addInputSocket(COM_DT_COLOR, COM_SC_NO_RESIZE); + this->addOutputSocket(COM_DT_COLOR); + this->m_pixelReader = NULL; + this->setComplex(true); +} + +void PlaneDistortWarpImageOperation::calculateCorners(const float corners[4][2], bool normalized) +{ + if (normalized) { + for (int i = 0; i < 4; i++) { + this->m_frameSpaceCorners[i][0] = corners[i][0] * this->getWidth(); + this->m_frameSpaceCorners[i][1] = corners[i][1] * this->getHeight(); + } + } + else { + for (int i = 0; i < 4; i++) { + this->m_frameSpaceCorners[i][0] = corners[i][0]; + this->m_frameSpaceCorners[i][1] = corners[i][1]; + } + } +} + +void PlaneDistortWarpImageOperation::calculatePerspectiveMatrix() +{ + const int width = this->m_pixelReader->getWidth(); + const int height = this->m_pixelReader->getHeight(); + float frame_corners[4][2] = {{0.0f, 0.0f}, + {(float) width, 0.0f}, + {(float) width, (float) height}, + {0.0f, (float) height}}; + BKE_tracking_homography_between_two_quads(this->m_frameSpaceCorners, + frame_corners, + this->m_perspectiveMatrix); +} + +void PlaneDistortWarpImageOperation::initExecution() +{ + this->m_pixelReader = this->getInputSocketReader(0); +} + +void PlaneDistortWarpImageOperation::deinitExecution() +{ + this->m_pixelReader = NULL; +} + +void PlaneDistortWarpImageOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler) +{ + float xy[2] = {x, y}; + float uv[2]; + float deriv[2][2]; + + pixelTransform(xy, uv, deriv); + + m_pixelReader->readFiltered(output, uv[0], uv[1], deriv[0], deriv[1], COM_PS_BILINEAR); +} + +void PlaneDistortWarpImageOperation::pixelTransform(const float xy[2], float r_uv[2], float r_deriv[2][2]) +{ + warpCoord(xy[0], xy[1], m_perspectiveMatrix, r_uv, r_deriv); +} + +bool PlaneDistortWarpImageOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output) +{ + float UVs[4][2]; + float deriv[2][2]; + + /* TODO(sergey): figure out proper way to do this. */ + warpCoord(input->xmin - 2, input->ymin - 2, this->m_perspectiveMatrix, UVs[0], deriv); + warpCoord(input->xmax + 2, input->ymin - 2, this->m_perspectiveMatrix, UVs[1], deriv); + warpCoord(input->xmax + 2, input->ymax + 2, this->m_perspectiveMatrix, UVs[2], deriv); + warpCoord(input->xmin - 2, input->ymax + 2, this->m_perspectiveMatrix, UVs[3], deriv); + + float min[2], max[2]; + INIT_MINMAX2(min, max); + for (int i = 0; i < 4; i++) { + minmax_v2v2_v2(min, max, UVs[i]); + } + + rcti newInput; + + newInput.xmin = min[0] - 1; + newInput.ymin = min[1] - 1; + newInput.xmax = max[0] + 1; + newInput.ymax = max[1] + 1; + + return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output); +} + + +/* ******** PlaneDistort Mask ******** */ + +PlaneDistortMaskOperation::PlaneDistortMaskOperation() : + NodeOperation() +{ + addOutputSocket(COM_DT_VALUE); + + /* Currently hardcoded to 8 samples. */ + m_osa = 8; +} + +void PlaneDistortMaskOperation::calculateCorners(const float corners[4][2], bool normalized) +{ + if (normalized) { + for (int i = 0; i < 4; i++) { + this->m_frameSpaceCorners[i][0] = corners[i][0] * this->getWidth(); + this->m_frameSpaceCorners[i][1] = corners[i][1] * this->getHeight(); + } + } + else { + for (int i = 0; i < 4; i++) { + this->m_frameSpaceCorners[i][0] = corners[i][0]; + this->m_frameSpaceCorners[i][1] = corners[i][1]; + } + } +} + +void PlaneDistortMaskOperation::initExecution() +{ + BLI_jitter_init(m_jitter[0], m_osa); +} + +void PlaneDistortMaskOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler) +{ + float point[2]; + + int inside_counter = 0; + for (int sample = 0; sample < this->m_osa; sample++) { + point[0] = x + this->m_jitter[sample][0]; + point[1] = y + this->m_jitter[sample][1]; + + if (isect_point_tri_v2(point, this->m_frameSpaceCorners[0], this->m_frameSpaceCorners[1], this->m_frameSpaceCorners[2]) || + isect_point_tri_v2(point, this->m_frameSpaceCorners[0], this->m_frameSpaceCorners[2], this->m_frameSpaceCorners[3])) + { + inside_counter++; + } + } + + output[0] = (float) inside_counter / this->m_osa; +} |