Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
path: root/source/blender/blenlib/intern/uvproject.c
diff options
context:
space:
mode:
Diffstat (limited to 'source/blender/blenlib/intern/uvproject.c')
-rw-r--r--source/blender/blenlib/intern/uvproject.c287
1 files changed, 146 insertions, 141 deletions
diff --git a/source/blender/blenlib/intern/uvproject.c b/source/blender/blenlib/intern/uvproject.c
index c08f0d5e32b..a34c551767a 100644
--- a/source/blender/blenlib/intern/uvproject.c
+++ b/source/blender/blenlib/intern/uvproject.c
@@ -29,168 +29,173 @@
#include "BLI_uvproject.h"
typedef struct ProjCameraInfo {
- float camangle;
- float camsize;
- float xasp, yasp;
- float shiftx, shifty;
- float rotmat[4][4];
- float caminv[4][4];
- bool do_persp, do_pano, do_rotmat;
+ float camangle;
+ float camsize;
+ float xasp, yasp;
+ float shiftx, shifty;
+ float rotmat[4][4];
+ float caminv[4][4];
+ bool do_persp, do_pano, do_rotmat;
} ProjCameraInfo;
void BLI_uvproject_from_camera(float target[2], float source[3], ProjCameraInfo *uci)
{
- float pv4[4];
-
- copy_v3_v3(pv4, source);
- pv4[3] = 1.0;
-
- /* rotmat is the object matrix in this case */
- if (uci->do_rotmat) {
- mul_m4_v4(uci->rotmat, pv4);
- }
-
- /* caminv is the inverse camera matrix */
- mul_m4_v4(uci->caminv, pv4);
-
- if (uci->do_pano) {
- float angle = atan2f(pv4[0], -pv4[2]) / ((float)M_PI * 2.0f); /* angle around the camera */
- if (uci->do_persp == false) {
- target[0] = angle; /* no correct method here, just map to 0-1 */
- target[1] = pv4[1] / uci->camsize;
- }
- else {
- float vec2d[2]; /* 2D position from the camera */
- vec2d[0] = pv4[0];
- vec2d[1] = pv4[2];
- target[0] = angle * ((float)M_PI / uci->camangle);
- target[1] = pv4[1] / (len_v2(vec2d) * (uci->camsize * 2.0f));
- }
- }
- else {
- if (pv4[2] == 0.0f) {
- pv4[2] = 0.00001f; /* don't allow div by 0 */
- }
-
- if (uci->do_persp == false) {
- target[0] = (pv4[0] / uci->camsize);
- target[1] = (pv4[1] / uci->camsize);
- }
- else {
- target[0] = (-pv4[0] * ((1.0f / uci->camsize) / pv4[2])) / 2.0f;
- target[1] = (-pv4[1] * ((1.0f / uci->camsize) / pv4[2])) / 2.0f;
- }
- }
-
- target[0] *= uci->xasp;
- target[1] *= uci->yasp;
-
- /* adds camera shift + 0.5 */
- target[0] += uci->shiftx;
- target[1] += uci->shifty;
+ float pv4[4];
+
+ copy_v3_v3(pv4, source);
+ pv4[3] = 1.0;
+
+ /* rotmat is the object matrix in this case */
+ if (uci->do_rotmat) {
+ mul_m4_v4(uci->rotmat, pv4);
+ }
+
+ /* caminv is the inverse camera matrix */
+ mul_m4_v4(uci->caminv, pv4);
+
+ if (uci->do_pano) {
+ float angle = atan2f(pv4[0], -pv4[2]) / ((float)M_PI * 2.0f); /* angle around the camera */
+ if (uci->do_persp == false) {
+ target[0] = angle; /* no correct method here, just map to 0-1 */
+ target[1] = pv4[1] / uci->camsize;
+ }
+ else {
+ float vec2d[2]; /* 2D position from the camera */
+ vec2d[0] = pv4[0];
+ vec2d[1] = pv4[2];
+ target[0] = angle * ((float)M_PI / uci->camangle);
+ target[1] = pv4[1] / (len_v2(vec2d) * (uci->camsize * 2.0f));
+ }
+ }
+ else {
+ if (pv4[2] == 0.0f) {
+ pv4[2] = 0.00001f; /* don't allow div by 0 */
+ }
+
+ if (uci->do_persp == false) {
+ target[0] = (pv4[0] / uci->camsize);
+ target[1] = (pv4[1] / uci->camsize);
+ }
+ else {
+ target[0] = (-pv4[0] * ((1.0f / uci->camsize) / pv4[2])) / 2.0f;
+ target[1] = (-pv4[1] * ((1.0f / uci->camsize) / pv4[2])) / 2.0f;
+ }
+ }
+
+ target[0] *= uci->xasp;
+ target[1] *= uci->yasp;
+
+ /* adds camera shift + 0.5 */
+ target[0] += uci->shiftx;
+ target[1] += uci->shifty;
}
/* could rv3d->persmat */
-void BLI_uvproject_from_view(float target[2], float source[3], float persmat[4][4], float rotmat[4][4], float winx, float winy)
+void BLI_uvproject_from_view(float target[2],
+ float source[3],
+ float persmat[4][4],
+ float rotmat[4][4],
+ float winx,
+ float winy)
{
- float pv4[4], x = 0.0, y = 0.0;
-
- copy_v3_v3(pv4, source);
- pv4[3] = 1.0;
-
- /* rotmat is the object matrix in this case */
- mul_m4_v4(rotmat, pv4);
-
- /* almost ED_view3d_project_short */
- mul_m4_v4(persmat, pv4);
- if (fabsf(pv4[3]) > 0.00001f) { /* avoid division by zero */
- target[0] = winx / 2.0f + (winx / 2.0f) * pv4[0] / pv4[3];
- target[1] = winy / 2.0f + (winy / 2.0f) * pv4[1] / pv4[3];
- }
- else {
- /* scaling is lost but give a valid result */
- target[0] = winx / 2.0f + (winx / 2.0f) * pv4[0];
- target[1] = winy / 2.0f + (winy / 2.0f) * pv4[1];
- }
-
- /* v3d->persmat seems to do this funky scaling */
- if (winx > winy) {
- y = (winx - winy) / 2.0f;
- winy = winx;
- }
- else {
- x = (winy - winx) / 2.0f;
- winx = winy;
- }
-
- target[0] = (x + target[0]) / winx;
- target[1] = (y + target[1]) / winy;
+ float pv4[4], x = 0.0, y = 0.0;
+
+ copy_v3_v3(pv4, source);
+ pv4[3] = 1.0;
+
+ /* rotmat is the object matrix in this case */
+ mul_m4_v4(rotmat, pv4);
+
+ /* almost ED_view3d_project_short */
+ mul_m4_v4(persmat, pv4);
+ if (fabsf(pv4[3]) > 0.00001f) { /* avoid division by zero */
+ target[0] = winx / 2.0f + (winx / 2.0f) * pv4[0] / pv4[3];
+ target[1] = winy / 2.0f + (winy / 2.0f) * pv4[1] / pv4[3];
+ }
+ else {
+ /* scaling is lost but give a valid result */
+ target[0] = winx / 2.0f + (winx / 2.0f) * pv4[0];
+ target[1] = winy / 2.0f + (winy / 2.0f) * pv4[1];
+ }
+
+ /* v3d->persmat seems to do this funky scaling */
+ if (winx > winy) {
+ y = (winx - winy) / 2.0f;
+ winy = winx;
+ }
+ else {
+ x = (winy - winx) / 2.0f;
+ winx = winy;
+ }
+
+ target[0] = (x + target[0]) / winx;
+ target[1] = (y + target[1]) / winy;
}
/* 'rotmat' can be obedit->obmat when uv project is used.
* 'winx' and 'winy' can be from scene->r.xsch/ysch */
-ProjCameraInfo *BLI_uvproject_camera_info(Object *ob, float(*rotmat)[4], float winx, float winy)
+ProjCameraInfo *BLI_uvproject_camera_info(Object *ob, float (*rotmat)[4], float winx, float winy)
{
- ProjCameraInfo uci;
- Camera *camera = ob->data;
-
- uci.do_pano = (camera->type == CAM_PANO);
- uci.do_persp = (camera->type == CAM_PERSP);
-
- uci.camangle = focallength_to_fov(camera->lens, camera->sensor_x) / 2.0f;
- uci.camsize = uci.do_persp ? tanf(uci.camangle) : camera->ortho_scale;
-
- /* account for scaled cameras */
- copy_m4_m4(uci.caminv, ob->obmat);
- normalize_m4(uci.caminv);
-
- if (invert_m4(uci.caminv)) {
- ProjCameraInfo *uci_pt;
-
- /* normal projection */
- if (rotmat) {
- copy_m4_m4(uci.rotmat, rotmat);
- uci.do_rotmat = true;
- }
- else {
- uci.do_rotmat = false;
- }
-
- /* also make aspect ratio adjustment factors */
- if (winx > winy) {
- uci.xasp = 1.0f;
- uci.yasp = winx / winy;
- }
- else {
- uci.xasp = winy / winx;
- uci.yasp = 1.0f;
- }
-
- /* include 0.5f here to move the UVs into the center */
- uci.shiftx = 0.5f - (camera->shiftx * uci.xasp);
- uci.shifty = 0.5f - (camera->shifty * uci.yasp);
-
- uci_pt = MEM_mallocN(sizeof(ProjCameraInfo), "ProjCameraInfo");
- *uci_pt = uci;
- return uci_pt;
- }
-
- return NULL;
+ ProjCameraInfo uci;
+ Camera *camera = ob->data;
+
+ uci.do_pano = (camera->type == CAM_PANO);
+ uci.do_persp = (camera->type == CAM_PERSP);
+
+ uci.camangle = focallength_to_fov(camera->lens, camera->sensor_x) / 2.0f;
+ uci.camsize = uci.do_persp ? tanf(uci.camangle) : camera->ortho_scale;
+
+ /* account for scaled cameras */
+ copy_m4_m4(uci.caminv, ob->obmat);
+ normalize_m4(uci.caminv);
+
+ if (invert_m4(uci.caminv)) {
+ ProjCameraInfo *uci_pt;
+
+ /* normal projection */
+ if (rotmat) {
+ copy_m4_m4(uci.rotmat, rotmat);
+ uci.do_rotmat = true;
+ }
+ else {
+ uci.do_rotmat = false;
+ }
+
+ /* also make aspect ratio adjustment factors */
+ if (winx > winy) {
+ uci.xasp = 1.0f;
+ uci.yasp = winx / winy;
+ }
+ else {
+ uci.xasp = winy / winx;
+ uci.yasp = 1.0f;
+ }
+
+ /* include 0.5f here to move the UVs into the center */
+ uci.shiftx = 0.5f - (camera->shiftx * uci.xasp);
+ uci.shifty = 0.5f - (camera->shifty * uci.yasp);
+
+ uci_pt = MEM_mallocN(sizeof(ProjCameraInfo), "ProjCameraInfo");
+ *uci_pt = uci;
+ return uci_pt;
+ }
+
+ return NULL;
}
void BLI_uvproject_from_view_ortho(float target[2], float source[3], float rotmat[4][4])
{
- float pv[3];
+ float pv[3];
- mul_v3_m4v3(pv, rotmat, source);
+ mul_v3_m4v3(pv, rotmat, source);
- /* ortho projection */
- target[0] = -pv[0];
- target[1] = pv[2];
+ /* ortho projection */
+ target[0] = -pv[0];
+ target[1] = pv[2];
}
void BLI_uvproject_camera_info_scale(ProjCameraInfo *uci, float scale_x, float scale_y)
{
- uci->xasp *= scale_x;
- uci->yasp *= scale_y;
+ uci->xasp *= scale_x;
+ uci->yasp *= scale_y;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 16:16:45 +0300