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zooming_at_mouse_pos-20070827.diff
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zooming_at_mouse_pos-20070827.diff
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Index: source/blender/include/BSE_view.h
===================================================================
--- source/blender/include/BSE_view.h (revision 11838)
+++ source/blender/include/BSE_view.h (working copy)
@@ -76,6 +76,7 @@
void calctrackballvecfirst(struct rcti *area, short *mval, float *vec);
void calctrackballvec(struct rcti *area, short *mval, float *vec);
void viewmove(int mode);
+void view_zoom_mouseloc(float dfac, short *mouseloc);
int get_view3d_viewplane(int winxi, int winyi, rctf *viewplane, float *clipsta, float *clipend, float *pixsize);
void setwinmatrixview3d(int winx, int winy, struct rctf *rect);
Index: source/blender/src/toets.c
===================================================================
--- source/blender/src/toets.c (revision 11838)
+++ source/blender/src/toets.c (working copy)
@@ -108,6 +108,9 @@
#include "BIF_poseobject.h"
+#define VIEW_ZOOM_OUT_FACTOR (1.15f)
+#define VIEW_ZOOM_IN_FACTOR (1.0f/VIEW_ZOOM_OUT_FACTOR)
+
/* ------------------------------------------------------------------------- */
static int is_an_active_object(void *ob) {
@@ -155,6 +158,7 @@
float phi, si, q1[4], vec[3];
static int perspo=1;
int preview3d_event= 1;
+ short mouseloc[2];
float new_dist, orig_ofs[3];
@@ -243,14 +247,20 @@
if(G.vd->persp==2) {
G.vd->camzoom= MAX2(-30, G.vd->camzoom-5);
}
- else if(G.vd->dist<10.0*G.vd->far) G.vd->dist*=1.2f;
+ else if(G.vd->dist<10.0*G.vd->far) {
+ getmouseco_areawin(mouseloc);
+ view_zoom_mouseloc(VIEW_ZOOM_OUT_FACTOR, mouseloc);
+ }
if(G.vd->persp!=1) preview3d_event= 0;
}
else if(event==PADPLUSKEY) {
if(G.vd->persp==2) {
G.vd->camzoom= MIN2(300, G.vd->camzoom+5);
}
- else if(G.vd->dist> 0.001*G.vd->grid) G.vd->dist*=.83333f;
+ else if(G.vd->dist> 0.001*G.vd->grid) {
+ getmouseco_areawin(mouseloc);
+ view_zoom_mouseloc(VIEW_ZOOM_IN_FACTOR, mouseloc);
+ }
if(G.vd->persp!=1) preview3d_event= 0;
}
else if(event==PAD5) {
Index: source/blender/src/view.c
===================================================================
--- source/blender/src/view.c (revision 11838)
+++ source/blender/src/view.c (working copy)
@@ -538,7 +538,7 @@
float reverse, oldquat[4], q1[4], si, phi, dist0;
float ofs[3], obofs[3]= {0.0f, 0.0f, 0.0f};
int firsttime=1;
- short mvalball[2], mval[2], mvalo[2];
+ short mvalball[2], mval[2], mvalo[2], mval_area[2];
short use_sel = 0;
short preview3d_event= 1;
@@ -556,6 +556,7 @@
QUATCOPY(oldquat, G.vd->viewquat);
+ getmouseco_areawin(mval_area); /* for zoom to mouse loc */
getmouseco_sc(mvalo); /* work with screen coordinates because of trackball function */
mvalball[0]= mvalo[0]; /* needed for turntable to work */
mvalball[1]= mvalo[1];
@@ -728,9 +729,10 @@
}
}
else if(mode==2) {
+ float zfac=1.0;
if(U.viewzoom==USER_ZOOM_CONT) {
// oldstyle zoom
- G.vd->dist*= 1.0+(float)(mvalo[0]-mval[0]+mvalo[1]-mval[1])/1000.0;
+ zfac = 1.0+(float)(mvalo[0]-mval[0]+mvalo[1]-mval[1])/1000.0;
}
else if(U.viewzoom==USER_ZOOM_SCALE) {
int ctr[2], len1, len2;
@@ -742,14 +744,17 @@
len1 = (int)sqrt((ctr[0] - mval[0])*(ctr[0] - mval[0]) + (ctr[1] - mval[1])*(ctr[1] - mval[1])) + 5;
len2 = (int)sqrt((ctr[0] - mvalo[0])*(ctr[0] - mvalo[0]) + (ctr[1] - mvalo[1])*(ctr[1] - mvalo[1])) + 5;
- G.vd->dist= dist0 * ((float)len2/len1);
+ zfac = dist0 * ((float)len2/len1) / G.vd->dist;
}
else { /* USER_ZOOM_DOLLY */
float len1 = (curarea->winrct.ymax - mval[1]) + 5;
float len2 = (curarea->winrct.ymax - mvalo[1]) + 5;
-
- G.vd->dist= dist0 * (2.0*((len2/len1)-1.0) + 1.0);
+ zfac = dist0 * (2.0*((len2/len1)-1.0) + 1.0) / G.vd->dist;
}
+
+ if(zfac != 1.0 && zfac*G.vd->dist > 0.001*G.vd->grid &&
+ zfac*G.vd->dist < 10.0*G.vd->far)
+ view_zoom_mouseloc(zfac, mval_area);
/* these limits are in toets.c too */
if(G.vd->dist<0.001*G.vd->grid) G.vd->dist= 0.001*G.vd->grid;
@@ -799,7 +804,51 @@
BIF_view3d_previewrender_signal(curarea, PR_PROJECTED);
}
+
+void view_zoom_mouseloc(float dfac, short *mouseloc)
+{
+ //if(U.uiflag & USER_MOUSEPOSDOLLY) {
+ if (1) {
+ short vb[2];
+ float dvec[3];
+ float tvec[3];
+ float tpos[3];
+ float new_dist;
+ /* find the current window width and height */
+ vb[0] = G.vd->area->winx;
+ vb[1] = G.vd->area->winy;
+
+ tpos[0] = -G.vd->ofs[0];
+ tpos[1] = -G.vd->ofs[1];
+ tpos[2] = -G.vd->ofs[2];
+
+ /* Project cursor position into 3D space */
+ initgrabz(tpos[0], tpos[1], tpos[2]);
+ window_to_3d(dvec, mouseloc[0]-vb[0]/2, mouseloc[1]-vb[1]/2);
+
+ /* Calculate view target position for dolly */
+ tvec[0] = -(tpos[0] + dvec[0]);
+ tvec[1] = -(tpos[1] + dvec[1]);
+ tvec[2] = -(tpos[2] + dvec[2]);
+
+ /* Offset to target position and dolly */
+ new_dist = G.vd->dist * dfac;
+
+ VECCOPY(G.vd->ofs, tvec);
+ G.vd->dist = new_dist;
+
+ /* Calculate final offset */
+ dvec[0] = tvec[0] + dvec[0] * dfac;
+ dvec[1] = tvec[1] + dvec[1] * dfac;
+ dvec[2] = tvec[2] + dvec[2] * dfac;
+
+ VECCOPY(G.vd->ofs, dvec);
+ } else {
+ G.vd->dist *= dfac;
+ }
+}
+
/* Gets the lens and clipping values from a camera of lamp type object */
void object_view_settings(Object *ob, float *lens, float *clipsta, float *clipend)
{

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