2008-12-29 21:37:54 +01:00
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/**
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2009-06-23 02:09:26 +02:00
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* $Id$
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2008-12-29 21:37:54 +01:00
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#include <stdlib.h>
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#include <math.h>
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#include "DNA_screen_types.h"
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2009-06-21 16:30:59 +02:00
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#include "DNA_windowmanager_types.h"
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2008-12-29 21:37:54 +01:00
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#include "BLI_arithb.h"
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#include "WM_types.h"
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#include "transform.h"
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/* ************************** INPUT FROM MOUSE *************************** */
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void InputVector(TransInfo *t, MouseInput *mi, short mval[2], float output[3])
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{
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float vec[3], dvec[3];
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if(mi->precision)
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{
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/* calculate the main translation and the precise one separate */
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convertViewVec(t, dvec, (short)(mval[0] - mi->precision_mval[0]), (short)(mval[1] - mi->precision_mval[1]));
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VecMulf(dvec, 0.1f);
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convertViewVec(t, vec, (short)(mi->precision_mval[0] - t->imval[0]), (short)(mi->precision_mval[1] - t->imval[1]));
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VecAddf(output, vec, dvec);
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}
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else
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{
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convertViewVec(t, output, (short)(mval[0] - t->imval[0]), (short)(mval[1] - t->imval[1]));
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}
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}
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void InputSpring(TransInfo *t, MouseInput *mi, short mval[2], float output[3])
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{
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float ratio, precise_ratio, dx, dy;
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if(mi->precision)
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{
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/* calculate ratio for shiftkey pos, and for total, and blend these for precision */
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dx = (float)(mi->center[0] - mi->precision_mval[0]);
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dy = (float)(mi->center[1] - mi->precision_mval[1]);
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ratio = (float)sqrt( dx*dx + dy*dy);
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dx= (float)(mi->center[0] - mval[0]);
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dy= (float)(mi->center[1] - mval[1]);
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precise_ratio = (float)sqrt( dx*dx + dy*dy);
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ratio = (ratio + (precise_ratio - ratio) / 10.0f) / mi->factor;
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}
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else
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{
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dx = (float)(mi->center[0] - mval[0]);
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dy = (float)(mi->center[1] - mval[1]);
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ratio = (float)sqrt( dx*dx + dy*dy) / mi->factor;
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}
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output[0] = ratio;
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}
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void InputSpringFlip(TransInfo *t, MouseInput *mi, short mval[2], float output[3])
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{
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InputSpring(t, mi, mval, output);
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/* flip scale */
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if ((mi->center[0] - mval[0]) * (mi->center[0] - mi->imval[0]) +
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(mi->center[1] - mval[1]) * (mi->center[1] - mi->imval[1]) < 0)
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{
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output[0] *= -1.0f;
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}
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}
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void InputTrackBall(TransInfo *t, MouseInput *mi, short mval[2], float output[3])
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{
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if(mi->precision)
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{
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output[0] = ( mi->imval[1] - mi->precision_mval[1] ) + ( mi->precision_mval[1] - mval[1] ) * 0.1f;
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output[1] = ( mi->precision_mval[0] - mi->imval[0] ) + ( mval[0] - mi->precision_mval[0] ) * 0.1f;
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}
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else
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{
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output[0] = (float)( mi->imval[1] - mval[1] );
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output[1] = (float)( mval[0] - mi->imval[0] );
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}
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output[0] *= mi->factor;
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output[1] *= mi->factor;
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}
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void InputHorizontalRatio(TransInfo *t, MouseInput *mi, short mval[2], float output[3]) {
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float x, pad;
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pad = t->ar->winx / 10;
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if (mi->precision)
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{
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/* deal with Shift key by adding motion / 10 to motion before shift press */
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x = mi->precision_mval[0] + (float)(mval[0] - mi->precision_mval[0]) / 10.0f;
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}
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else {
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x = mval[0];
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}
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output[0] = (x - pad) / (t->ar->winx - 2 * pad);
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}
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void InputHorizontalAbsolute(TransInfo *t, MouseInput *mi, short mval[2], float output[3]) {
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float vec[3];
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InputVector(t, mi, mval, vec);
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Projf(vec, vec, t->viewinv[0]);
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output[0] = Inpf(t->viewinv[0], vec) * 2.0f;
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}
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void InputVerticalRatio(TransInfo *t, MouseInput *mi, short mval[2], float output[3]) {
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float y, pad;
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pad = t->ar->winy / 10;
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if (mi->precision) {
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/* deal with Shift key by adding motion / 10 to motion before shift press */
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y = mi->precision_mval[1] + (float)(mval[1] - mi->precision_mval[1]) / 10.0f;
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}
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else {
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y = mval[0];
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}
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output[0] = (y - pad) / (t->ar->winy - 2 * pad);
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}
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void InputVerticalAbsolute(TransInfo *t, MouseInput *mi, short mval[2], float output[3]) {
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float vec[3];
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InputVector(t, mi, mval, vec);
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Projf(vec, vec, t->viewinv[1]);
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output[0] = Inpf(t->viewinv[1], vec) * 2.0f;
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}
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void InputAngle(TransInfo *t, MouseInput *mi, short mval[2], float output[3])
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{
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double dx2 = mval[0] - mi->center[0];
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double dy2 = mval[1] - mi->center[1];
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double B = sqrt(dx2*dx2+dy2*dy2);
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double dx1 = mi->imval[0] - mi->center[0];
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double dy1 = mi->imval[1] - mi->center[1];
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double A = sqrt(dx1*dx1+dy1*dy1);
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double dx3 = mval[0] - mi->imval[0];
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double dy3 = mval[1] - mi->imval[1];
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/* use doubles here, to make sure a "1.0" (no rotation) doesnt become 9.999999e-01, which gives 0.02 for acos */
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double deler = ((dx1*dx1+dy1*dy1)+(dx2*dx2+dy2*dy2)-(dx3*dx3+dy3*dy3))
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/ (2.0 * (A*B?A*B:1.0));
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/* (A*B?A*B:1.0f) this takes care of potential divide by zero errors */
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float dphi;
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dphi = saacos((float)deler);
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if( (dx1*dy2-dx2*dy1)>0.0 ) dphi= -dphi;
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/* If the angle is zero, because of lack of precision close to the 1.0 value in acos
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* approximate the angle with the oposite side of the normalized triangle
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* This is a good approximation here since the smallest acos value seems to be around
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* 0.02 degree and lower values don't even have a 0.01% error compared to the approximation
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* */
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if (dphi == 0)
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{
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double dx, dy;
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dx2 /= A;
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dy2 /= A;
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dx1 /= B;
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dy1 /= B;
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dx = dx1 - dx2;
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dy = dy1 - dy2;
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dphi = sqrt(dx*dx + dy*dy);
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if( (dx1*dy2-dx2*dy1)>0.0 ) dphi= -dphi;
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}
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if(mi->precision) dphi = dphi/30.0f;
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/* if no delta angle, don't update initial position */
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if (dphi != 0)
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{
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mi->imval[0] = mval[0];
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mi->imval[1] = mval[1];
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}
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output[0] += dphi;
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}
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void initMouseInput(TransInfo *t, MouseInput *mi, int center[2], short mval[2])
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{
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mi->factor = 0;
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mi->precision = 0;
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mi->center[0] = center[0];
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mi->center[1] = center[1];
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mi->imval[0] = mval[0];
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mi->imval[1] = mval[1];
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}
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static void calcSpringFactor(MouseInput *mi)
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{
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mi->factor = (float)sqrt(
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(
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((float)(mi->center[1] - mi->imval[1]))*((float)(mi->center[1] - mi->imval[1]))
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+
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((float)(mi->center[0] - mi->imval[0]))*((float)(mi->center[0] - mi->imval[0]))
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) );
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if (mi->factor==0.0f)
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mi->factor= 1.0f; /* prevent Inf */
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}
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void initMouseInputMode(TransInfo *t, MouseInput *mi, MouseInputMode mode)
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{
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switch(mode)
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{
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case INPUT_VECTOR:
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mi->apply = InputVector;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_NONE;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_SPRING:
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calcSpringFactor(mi);
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mi->apply = InputSpring;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_SPRING;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_SPRING_FLIP:
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calcSpringFactor(mi);
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mi->apply = InputSpringFlip;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_SPRING;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_ANGLE:
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mi->apply = InputAngle;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_ANGLE;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_TRACKBALL:
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/* factor has to become setting or so */
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mi->factor = 0.1f;
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mi->apply = InputTrackBall;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_TRACKBALL;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_HORIZONTAL_RATIO:
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mi->factor = (float)(mi->center[0] - mi->imval[0]);
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mi->apply = InputHorizontalRatio;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_HARROW;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_HORIZONTAL_ABSOLUTE:
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mi->apply = InputHorizontalAbsolute;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_HARROW;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_VERTICAL_RATIO:
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mi->apply = InputVerticalRatio;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_VARROW;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_VERTICAL_ABSOLUTE:
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mi->apply = InputVerticalAbsolute;
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2009-04-30 13:47:35 +02:00
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t->helpline = HLP_VARROW;
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2008-12-29 21:37:54 +01:00
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break;
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case INPUT_NONE:
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default:
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mi->apply = NULL;
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break;
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}
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/* bootstrap mouse input with initial values */
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applyMouseInput(t, mi, mi->imval, t->values);
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}
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void applyMouseInput(TransInfo *t, MouseInput *mi, short mval[2], float output[3])
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{
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if (mi->apply != NULL)
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{
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mi->apply(t, mi, mval, output);
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}
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}
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int handleMouseInput(TransInfo *t, MouseInput *mi, wmEvent *event)
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{
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int redraw = 0;
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switch (event->type)
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{
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case LEFTSHIFTKEY:
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case RIGHTSHIFTKEY:
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if (event->val)
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{
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2009-01-03 23:15:59 +01:00
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t->modifiers |= MOD_PRECISION;
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2008-12-29 21:37:54 +01:00
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/* shift is modifier for higher precision transform
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* store the mouse position where the normal movement ended */
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mi->precision_mval[0] = event->x - t->ar->winrct.xmin;
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mi->precision_mval[1] = event->y - t->ar->winrct.ymin;
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mi->precision = 1;
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}
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else
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{
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2009-01-03 23:15:59 +01:00
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t->modifiers &= ~MOD_PRECISION;
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2008-12-29 21:37:54 +01:00
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mi->precision = 0;
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}
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redraw = 1;
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break;
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}
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return redraw;
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}
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