source: trunk/src/testing/app/volvis/vSliceView.cpp @ 4

/********************************************************************************
 * Volatile - Volume Visualization Software for SAGE
 * Copyright (C) 2004 Electronic Visualization Laboratory,
 * University of Illinois at Chicago
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following disclaimer
 *    in the documentation and/or other materials provided with the distribution.
 *  * Neither the name of the University of Illinois at Chicago nor
 *    the names of its contributors may be used to endorse or promote
 *    products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Direct questions, comments etc about Volatile to www.evl.uic.edu/cavern/forum
 *********************************************************************************/

#include "vSliceView.h"
#include "vCG.h"
#include "vARB.h"
#include "MatrixMath.h"

vProbe::vProbe() :vPrimitive() {
        xform.scale = 1.0f/(float)global.volume->maxDim;
}

//do opngl initialization here
void vProbe::init() {
}

vProbe::~vProbe() {
}

//draws the cone here
void vProbe::draw()
{
        color[0] = 0.0f;
        color[1] = 1.0f;
        color[2] = 0.0f;
        glPushMatrix();
        glPushAttrib(GL_ALL_ATTRIB_BITS);
        glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color);
        glTranslatef(xform.trans[0],xform.trans[1],xform.trans[2]);
        glMultMatrixf(xform.rotn);
        glutSolidSphere(xform.scale,20,20);
        glPopAttrib();
        glPopMatrix();
        return;
}

float sliceDim = 0.6f;
float sliceVertexList[4][3] = {{0.0f, 0.0f, 0.0f},
                                {0.0f, 1.0f, 0.0f},
                                {1.0f, 1.0f, 0.0f},
                                {1.0f, 0.0f, 0.0f}};
float polygonVertexList[4][3] = {{-sliceDim*3.0f, -sliceDim, 0.0f},
                                {-sliceDim*3.0f, sliceDim, 0.0f},
                                {sliceDim*3.0f, sliceDim, 0.0f},
                                {sliceDim*3.0f, -sliceDim, 0.0f}};
float sepVertexList[2][4] = {{sliceDim+0.5f,sliceDim+0.5f, 0.0f},
                                {sliceDim+0.5f, 0.5-sliceDim, 0.0f, 1.0f}};

vSliceView::vSliceView() :vPrimitive() {
        setTranslation(0.0f,-2.0f,0.0f);
}

//do opngl initialization here
void vSliceView::init() {
}

vSliceView::~vSliceView() {
}


void vSliceView::draw() {
        //draw slice view
#if defined(ADDCGGL)
        setCurTextureCG(global.volren.origDeptexName);
#endif
#if defined(ADDARBGL)
        setCurTextureARB(global.volren.origDeptexName);
#endif
        float xptr, yptr, zptr;         //location of the probe in the volume
        global.volume->getNormProbe(xptr,yptr,zptr);//between 0..1
        axialProbe.setTranslation(xptr,1.0f-zptr,0.0f);
        coronalProbe.setTranslation(xptr,yptr,0.0f);
        sagittalProbe.setTranslation(1.0f-zptr,yptr,0.0f);

        //push the slicevew down
        glPushMatrix();
        glPushAttrib(GL_ALL_ATTRIB_BITS);
        glTranslatef(xform.trans[0], xform.trans[1], xform.trans[2]);
        glMultMatrixf(xform.rotn);
        glScalef(xform.scale,xform.scale,xform.scale);
        disableTex3D();
        glDisable(GL_LIGHTING);
        glLineWidth(0.5f);
        if (selected)
                glColor3f(0.5f,0.5f,0.0f);
        else
                glColor3f(0.5f,0.5f,0.5f);
        glBegin(GL_LINE_LOOP); //draw slice and texture map it
                glVertex3fv(polygonVertexList[0]);
                glVertex3fv(polygonVertexList[1]);
                glVertex3fv(polygonVertexList[2]);
                glVertex3fv(polygonVertexList[3]);
        glEnd();
        enableTex3D(global.volume->texName);
        glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

        //the axial view, takes the y direction to index into the volume
        glPushMatrix();
        glTranslatef(-sliceDim*2,0.0f,0.0f);
        glTranslatef(-0.5f,-0.5f,0.0f);
        disableTex3D();
        axialProbe.draw();
        glBegin(GL_LINES);
                glVertex3fv(sepVertexList[0]);
                glVertex3fv(sepVertexList[1]);
        glEnd();
        //get the modelview matrix, multiply the pointer posn to see if it intersects this object

        enableTex3D(global.volume->texName);
        glBegin(GL_POLYGON); //draw slice and texture map it
                glTexCoord3f(0.0f, yptr, 0.0f);
                glVertex3fv(sliceVertexList[1]);
                glTexCoord3f(0.0f, yptr, 1.0f);
                glVertex3fv(sliceVertexList[0]);
                glTexCoord3f(1.0f, yptr, 1.0f);
                glVertex3fv(sliceVertexList[3]);
                glTexCoord3f(1.0f, yptr, 0.0f);
                glVertex3fv(sliceVertexList[2]);
        glEnd();
        glPopMatrix();

        //the coronal view, takes the z
        glPushMatrix();
        glTranslatef(0.0f,0.0f,0.0f);
        glTranslatef(-0.5f,-0.5f,0.0f);
        disableTex3D();
        coronalProbe.draw();
        glBegin(GL_LINES);
                glVertex3fv(sepVertexList[0]);
                glVertex3fv(sepVertexList[1]);
        glEnd();
        enableTex3D(global.volume->texName);
        glBegin(GL_POLYGON); //draw slice and texture map it
                glTexCoord3f(0.0f, 0.0f, zptr);
                glVertex3fv(sliceVertexList[0]);
                glTexCoord3f(0.0f, 1.0f, zptr);
                glVertex3fv(sliceVertexList[1]);
                glTexCoord3f(1.0f, 1.0f, zptr);
                glVertex3fv(sliceVertexList[2]);
                glTexCoord3f(1.0f, 0.0f, zptr);
                glVertex3fv(sliceVertexList[3]);
        glEnd();
        glPopMatrix();


        //the sagittal view, takes the x
        glPushMatrix();
        glTranslatef(sliceDim*2,0.0f,0.0f);
        //since we are starting (0..1)
        glTranslatef(-0.5f,-0.5f,0.0f);
        disableTex3D();
        sagittalProbe.draw();
        enableTex3D(global.volume->texName);
        glBegin(GL_POLYGON); //draw slice and texture map it
                glTexCoord3f(xptr, 0.0f, 0.0f);
                glVertex3fv(sliceVertexList[3]);
                glTexCoord3f(xptr, 0.0f, 1.0f);
                glVertex3fv(sliceVertexList[0]);
                glTexCoord3f(xptr, 1.0f, 1.0f);
                glVertex3fv(sliceVertexList[1]);
                glTexCoord3f(xptr, 1.0f, 0.0f);
                glVertex3fv(sliceVertexList[2]);
        glEnd();
        glPopMatrix();

        glPopAttrib();
        glPopMatrix();
}

/*
int vSliceView::select() {
        if (withinBounds2D(mv,polygonVertexList,global.pointerPos)) {
                selected = 1;
        }
        else
                selected = 0;
        return selected;
}
*/