diff --git a/src/render_utils.c b/src/render_utils.c index 55dcf97..27f3765 100644 --- a/src/render_utils.c +++ b/src/render_utils.c @@ -15,10 +15,6 @@ inline void CameraState_Init(CameraState* camera_state) { } void CameraState_CalcFromMatrix(CameraState* camera_state, simd4x4f* mtx) { - camera_state->pos[0] = mtx->w[0]; - camera_state->pos[1] = mtx->w[1]; - camera_state->pos[2] = mtx->w[2]; - float right[3] = {mtx->x[0], mtx->y[0], mtx->z[0]}; float up[3] = {mtx->x[1], mtx->y[1], mtx->z[1]}; float forward[3] = {-mtx->x[2], -mtx->y[2], -mtx->z[2]}; @@ -27,6 +23,25 @@ void CameraState_CalcFromMatrix(CameraState* camera_state, simd4x4f* mtx) { camera_state->pitch = asin(-forward[1]); gLog("eye: %f %f %f", camera_state->pos[0], camera_state->pos[1], camera_state->pos[2]); + + simd4x4f rot_mat = *mtx; + rot_mat.w = simd4f_create(0.f, 0.f, 0.f, 1.f); + simd4x4f_transpose_inplace(&rot_mat); + + simd4f eye; + simd4x4f_matrix_point3_mul(&rot_mat, &mtx->w, &eye); + + gLog ("eye: %f, %f, %f", simd4f_get_y(eye), simd4f_get_z(eye)); + camera_state->pos[0] = -simd4f_get_x(eye); + camera_state->pos[1] = -simd4f_get_y(eye); + camera_state->pos[2] = -simd4f_get_z(eye); + + +// gLog ("ViewMat"); +// gLog ("%f, %f, %f, %f", mtx->x[0], mtx->x[1], mtx->x[2], mtx->x[3]); +// gLog ("%f, %f, %f, %f", mtx->y[0], mtx->y[1], mtx->y[2], mtx->y[3]); +// gLog ("%f, %f, %f, %f", mtx->z[0], mtx->z[1], mtx->z[2], mtx->z[3]); +// gLog ("%f, %f, %f, %f", mtx->w[0], mtx->w[1], mtx->w[2], mtx->w[3]); } void CameraState_CalcToMatrix(CameraState* camera_state, simd4x4f* mtx) { @@ -38,10 +53,10 @@ void CameraState_CalcToMatrix(CameraState* camera_state, simd4x4f* mtx) { const float d = 10.0f; simd4f eye = simd4f_create (camera_state->pos[0], camera_state->pos[1], camera_state->pos[2], 1.f); - simd4f forward = simd4f_create (-cp * ch * d, -sp * d, cp * sh * d, 1.f); + simd4f forward = simd4f_create (-cp * ch, -sp, cp * sh, 0.f); simd4f right = simd4f_cross3 (forward, simd4f_create (0.f, 1.f, 0.f, 1.f)); simd4f up = simd4f_cross3(right, forward); - simd4f center = simd4f_add(eye, forward); + simd4f center = simd4f_add(simd4f_mul(forward, simd4f_splat(d)), eye); simd4x4f_lookat(mtx, eye, center, up); } diff --git a/src/vissim.cc b/src/vissim.cc index e428a07..d18d8f7 100644 --- a/src/vissim.cc +++ b/src/vissim.cc @@ -589,7 +589,7 @@ int main(void) { changed = changed || ImGui::SliderFloat("Pitch", &gCameraState->pitch, -M_PI * 0.98, M_PI * 0.98); if (changed) { - //CameraState_CalcToMatrix(gCameraState, &gCameraState->mtxView); + CameraState_CalcToMatrix(gCameraState, &gCameraState->mtxView); } ImGui::End();