bool PlaneDistortWarpImageOperation::determineDependingAreaOfInterest( rcti *input, ReadBufferOperation *readOperation, rcti *output) { float min[2], max[2]; INIT_MINMAX2(min, max); for (int sample = 0; sample < this->m_motion_blur_samples; ++sample) { float UVs[4][2]; float deriv[2][2]; MotionSample *sample_data = &this->m_samples[sample]; /* TODO(sergey): figure out proper way to do this. */ warpCoord(input->xmin - 2, input->ymin - 2, sample_data->perspectiveMatrix, UVs[0], deriv); warpCoord(input->xmax + 2, input->ymin - 2, sample_data->perspectiveMatrix, UVs[1], deriv); warpCoord(input->xmax + 2, input->ymax + 2, sample_data->perspectiveMatrix, UVs[2], deriv); warpCoord(input->xmin - 2, input->ymax + 2, sample_data->perspectiveMatrix, UVs[3], deriv); 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); }
void PlaneDistortWarpImageOperation::executePixelSampled(float output[4], float x, float y, PixelSampler /*sampler*/) { float uv[2]; float deriv[2][2]; if (this->m_motion_blur_samples == 1) { warpCoord(x, y, this->m_samples[0].perspectiveMatrix, uv, deriv); m_pixelReader->readFiltered(output, uv[0], uv[1], deriv[0], deriv[1]); } else { zero_v4(output); for (int sample = 0; sample < this->m_motion_blur_samples; ++sample) { float color[4]; warpCoord(x, y, this->m_samples[sample].perspectiveMatrix, uv, deriv); m_pixelReader->readFiltered(color, uv[0], uv[1], deriv[0], deriv[1]); add_v4_v4(output, color); } mul_v4_fl(output, 1.0f / (float)this->m_motion_blur_samples); } }
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); }