X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=scene.c;h=debba608da20efb80cf51e68205f7bdf0538aacd;hp=2cfafa1f819654d31160a26e8125d379b872322d;hb=9d534bb644d7510782a835c701e4b185957f7e64;hpb=d9984149cebb3cf1bdbd2a5c89c8d7572c4b31d4

diff --git a/scene.c b/scene.c
index 2cfafa1..debba60 100644
--- a/scene.c
+++ b/scene.c
@@ -199,6 +199,9 @@ void windowReshape(int w, int h) {
  * @param y Mouse y position
  */
 void mouse(int button, int state, int x, int y) {
+  if ( button == GLUT_LEFT_BUTTON && glutGetModifiers() == GLUT_ACTIVE_SHIFT ) {
+    button = GLUT_MIDDLE_BUTTON; // Holding shift with left button is the same as the middle button
+  }
   switch(button) {
     case GLUT_LEFT_BUTTON:
     case GLUT_MIDDLE_BUTTON:
@@ -283,13 +286,14 @@ void motion(int x, int y) {
 
   switch ( manipulateState ) {
     case STATE_CAMERA_ROTATE_MOVE:
+      // w: rotate
       rotate += (x - startx);
 
       if ( buttonSelected == GLUT_LEFT_BUTTON ) {
-        // w: rotate, h: zoom
+        // h: zoom
         zoom += (y - starty);
       } else if ( buttonSelected == GLUT_MIDDLE_BUTTON ) {
-        // w: rotate, h: tilt
+        // h: tilt
         camAngle += (y - starty);
       }
 
@@ -299,33 +303,28 @@ void motion(int x, int y) {
       break;
 
     case STATE_OBJECT_POSITION_SCALE:
-      //so.x, so.y, so.z
+     
       if ( buttonSelected == GLUT_LEFT_BUTTON ) {
         // w: left/right, h: near/far
+         //so.x, so.y, so.z
         //sceneObjs[curObject].x += (x - startx)*leftrightFactor;
       } else if ( buttonSelected == GLUT_MIDDLE_BUTTON ) {
-        // w: big/small, h: up/down
+        // w: big/small
+        float diff = (x - startx);
+        float max = (float)height/bigsmallFactor;
+        float scaling = ( diff + max) / max;
 
-        // For big/small scaling, we map negative numbers to 0->1 and positive numbers to 1->inf
-        float diff = (y - starty);
-        if ( diff < 0 ) diff--;
-        if ( diff > 0 ) diff++;
-        float scaling;
+        sceneObjs[curObject].scale[0] *= scaling;
+        sceneObjs[curObject].scale[1] *= scaling;
+        sceneObjs[curObject].scale[2] *= scaling;
 
-        if ( diff < 0 ) {
-          scaling = (diff - -((float)height/2))/(0 - -((float)height/2));
-        } else {
-          scaling = diff;
-        }
-        
-        printf("Diff is %f, Scaling by %f on all axii\n", diff, scaling);
-        sceneObjs[curObject].scale[0] = scaling;
-        sceneObjs[curObject].scale[1] = scaling;
-        sceneObjs[curObject].scale[2] = scaling;
+        // h: up/down
+        sceneObjs[curObject].y += (y - starty) * updownFactor;
       }
 
       starty = y;
       startx = x;
+
       break;
 
     case STATE_OBJECT_ROTATION_TEXTURE_SCALE: