Added datavis3d back under src

Change-Id: I209e8b3228b2ce0085c897db6fb2ea78e93afa67
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/src/datavis3d/engine/shaders/fragmentShaderColorOnY b/src/datavis3d/engine/shaders/fragmentShaderColorOnY
new file mode 100644
index 00000000..ee57e8e5
--- /dev/null
+++ b/src/datavis3d/engine/shaders/fragmentShaderColorOnY
@@ -0,0 +1,33 @@
+#version 120
+
+uniform highp vec3 lightPosition_wrld;
+uniform highp vec3 color_mdl;
+uniform highp float lightStrength;
+uniform highp float ambientStrength;
+
+varying highp vec3 position_wrld;
+varying highp vec3 normal_cmr;
+varying highp vec3 eyeDirection_cmr;
+varying highp vec3 lightDirection_cmr;
+varying highp vec2 coords_mdl;
+
+void main() {
+    highp vec3 materialDiffuseColor = vec3(coords_mdl.y * color_mdl.x, coords_mdl.y * color_mdl.y, coords_mdl.y * color_mdl.z);
+    highp vec3 materialAmbientColor = vec3(ambientStrength, ambientStrength, ambientStrength) * materialDiffuseColor;
+    highp vec3 materialSpecularColor = vec3(1.0, 1.0, 1.0);
+
+    highp float distance = length(lightPosition_wrld - position_wrld);
+    highp vec3 n = normalize(normal_cmr);
+    highp vec3 l = normalize(lightDirection_cmr);
+    highp float cosTheta = clamp(dot(n, l), 0.0, 1.0);
+
+    highp vec3 E = normalize(eyeDirection_cmr);
+    highp vec3 R = reflect(-l, n);
+    highp float cosAlpha = clamp(dot(E, R), 0.0, 1.0);
+
+    gl_FragColor.rgb =
+        materialAmbientColor +
+        materialDiffuseColor * lightStrength * (cosTheta * cosTheta) / (distance * distance) +
+        materialSpecularColor * lightStrength * pow(cosAlpha, 5) / (distance * distance);
+}
+