Package ca.eandb.jmist.framework.color

Examples of ca.eandb.jmist.framework.color.Color

136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
      ScatteredRay sr;

      if (grandChild != null) {
        double rpdf = grandChild.getReversePDF();
        double pdf = grandChild.getPDF();
        Color color = grandChild.getCumulativeWeight()
            .divide(child.getCumulativeWeight())
            .times(pdf / rpdf);
        sr = grandChild.isSpecular()
            ? ScatteredRay.specular(ray, color, rpdf)
            : ScatteredRay.diffuse(ray, color, rpdf);
      } else { // grandChild == null
        double pdf = newParent.getPDF(v);
        Color color = newParent.scatter(v).divide(pdf);
        sr = ScatteredRay.diffuse(ray, color, pdf);
      }

      return new SurfaceNode(newParent, sr, surf, getRU(), getRV(), getRJ());
    } else { // newParent == null
View Full Code Here
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
    if (g <= 0.0) {
      return null;
    }

    Color etol = a.scatter(v);
    Color ltoe = b.scatter(v.opposite());
    Color c = etol.times(ltoe);

    if (ColorUtil.getTotalChannelValue(c) > 0.0
        && PathUtil.visibility(a, b)) {

      c = c.times(g);

      c = c.times(a.getCumulativeWeight()).times(
          b.getCumulativeWeight());

      return c;

    } else { // No mutual scattering or nodes not mutually visible
View Full Code Here
56
57
58
59
60
61
62
63
64
  /* (non-Javadoc)
   * @see ca.eandb.jmist.framework.Painter#getColor(ca.eandb.jmist.framework.SurfacePoint, ca.eandb.jmist.framework.color.WavelengthPacket)
   */
  @Override
  public Color getColor(SurfacePoint p, WavelengthPacket lambda) {
    Color result = inner.getColor(p, lambda);
    Color min = lambda.getColorModel().getGray(range.minimum(), lambda);
    return min.plus(result.times(range.length()));
  }
View Full Code Here
43
44
45
46
47
48
49
50
51
52
53
  /* (non-Javadoc)
   * @see ca.eandb.jmist.framework.Painter#getColor(ca.eandb.jmist.framework.SurfacePoint, ca.eandb.jmist.framework.color.WavelengthPacket)
   */
  @Override
  public Color getColor(SurfacePoint p, WavelengthPacket lambda) {
    Color sum = null;
    for (Painter child : children()) {
      sum = ColorUtil.add(sum, child.getColor(p, lambda));
    }
    return sum;
  }
View Full Code Here
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
      ScatteredRay sr;

      if (grandChild != null) {
        double rpdf = grandChild.getReversePDF();
        double pdf = grandChild.getPDF();
        Color color = grandChild.getCumulativeWeight()
            .divide(child.getCumulativeWeight())
            .times(pdf / rpdf);
        sr = grandChild.isSpecular()
            ? ScatteredRay.specular(ray, color, rpdf)
            : ScatteredRay.diffuse(ray, color, rpdf);
      } else { // grandChild == null
        double pdf = newParent.getPDF(v);
        Color color = newParent.scatter(v).divide(pdf);
        sr = ScatteredRay.diffuse(ray, color, pdf);
      }

      return new SurfaceNode(newParent, sr, surf, getRU(), getRV(), getRJ());
    } else { // newParent == null
View Full Code Here
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
    double    LdotN = L.dot(N);
    double    tanAlpha = Math.tan(Math.acos(HdotN));
    double    cos4Alpha = HdotN * HdotN * HdotN * HdotN;

    Medium    medium = x.getAmbientMedium();
    Color    n1 = medium.refractiveIndex(x.getPosition(), lambda);
    Color    k1 = medium.extinctionIndex(x.getPosition(), lambda);
    Color    n2 = n.sample(lambda);
    Color    k2 = k.sample(lambda);
    Color    F = MaterialUtil.reflectance(E, n1, k1, n2, k2, N);
    double    D = Math.exp(-(tanAlpha * tanAlpha / mSquared)) / (Math.PI * mSquared * cos4Alpha);
    double    G = Math.min(1.0, Math.min(2.0 * HdotN * EdotN / EdotH, 2.0 * HdotN * LdotN / EdotH));

    return F.times(D * G / (4.0 * EdotN * LdotN));
  }
View Full Code Here
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
    }

    in = in.unit();
    out = out.unit();

    Color d = diffuse.getColor(x, lambda);
    Color s = specular.getColor(x, lambda);

    Vector3 n = x.getShadingNormal();

    Color D = d.divide(Math.PI);

    double ci = -n.dot(in);
    double co = n.dot(out);
    Vector3 h = out.minus(in).unit();

    double ch = n.dot(h);
    double ch2 = ch * ch;
    double sh2 = 1.0 - ch2;
    double th2 = sh2 / ch2;
    double alpha2 = alpha * alpha;

    double k = (1.0 / Math.sqrt(co * ci))
        * Math.exp(-th2 / alpha2) / (4.0 * Math.PI * alpha2);
    Color S = s.times(k);

    return D.plus(S);

  }
View Full Code Here
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
    Vector3 n = x.getNormal();
    if (n.dot(v) > 0.0) {
      return null;
    }

    Color d = diffuse.getColor(x, lambda);
    Color s = specular.getColor(x, lambda);
    double davg = ColorUtil.getMeanChannelValue(d);
    double savg = ColorUtil.getMeanChannelValue(s);
    double total = davg + savg;

    Basis3 basis = x.getShadingBasis();
    Vector3 out;

    if (RandomUtil.bernoulli(davg / total, rj)) { // diffuse

      do {
        out = RandomUtil.diffuse(ru, rv).toCartesian(basis);
      } while (n.dot(out) <= 0.0);

    } else { // specular

      do {
        SphericalCoordinates sc = new SphericalCoordinates(
            Math.atan(alpha * Math.sqrt(-Math.log(1.0 - ru))),
            2.0 * Math.PI * rv);

        Vector3 h = sc.toCartesian(basis);
        out = Optics.reflect(v, h);
      } while (n.dot(out) <= 0.0);

    }

    Ray3 ray = new Ray3(x.getPosition(), out);
    double pdf = getScatteringPDF(x, v, out, true, lambda);
    Color value = bsdf(x, v, out, lambda).divide(pdf);

    return ScatteredRay.diffuse(ray, value, pdf);

  }
View Full Code Here
110
111
112
113
114
115
116
117
      Vector3 v = RandomUtil.diffuse(ru, rv).toCartesian(Basis3.fromW(ns));
      while (ng.dot(v) < 0.0) {
        v = RandomUtil.diffuse(Random.DEFAULT).toCartesian(Basis3.fromW(ns));
      }
      Ray3 ray = new Ray3(o, v);
      Color color = getWhite();
      return ScatteredRay.diffuse(ray, color, 1.0 / Math.PI);
    }
View Full Code Here
146
147
148
149
150
151
152
153
154
155
      Point2 p = pointOnImagePlane;
      SphericalCoordinates v = new SphericalCoordinates(
          Math.acos(1.0 - 2.0 * p.y()),
          2.0 * Math.PI * p.x());
      Ray3 ray = new Ray3(Point3.ORIGIN, v.toCartesian(BASIS));
      Color color = getWhite();
      double pdf = 1.0 / (4.0 * Math.PI);

      return ScatteredRay.diffuse(ray, color, pdf);
    }
View Full Code Here
TOP

Related Classes of ca.eandb.jmist.framework.color.Color

  • ca.eandb.jmist.framework.display.MatlabFileDisplay
  • ca.eandb.jmist.framework.display.MatlabXYZFileDisplay
  • ca.eandb.jmist.framework.display.OpenEXRFileDisplay
  • ca.eandb.jmist.framework.display.visualizer.JVisualizerDisplay
  • ca.eandb.jmist.framework.job.BidiPathTracerJob$Worker
  • ca.eandb.jmist.framework.job.KelemenMetropolisLightTransportJob$Worker
  • ca.eandb.jmist.framework.job.MaterialPhotometerJob
  • ca.eandb.jmist.framework.job.MetropolisLightTransportJob
  • ca.eandb.jmist.framework.job.MetropolisLightTransportJob$Worker
  • ca.eandb.jmist.framework.job.mlt.BidirectionalPathMutator
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.