StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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55 lines
1.5 KiB
55 lines
1.5 KiB
precision highp float;
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attribute float x, y, xFract, yFract;
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attribute float size, borderSize;
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attribute vec4 colorId, borderColorId;
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attribute float isActive;
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uniform vec2 scale, scaleFract, translate, translateFract;
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uniform float pixelRatio;
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uniform sampler2D palette;
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uniform vec2 paletteSize;
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const float maxSize = 100.;
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varying vec4 fragColor, fragBorderColor;
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varying float fragBorderRadius, fragWidth;
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bool isDirect = (paletteSize.x < 1.);
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vec4 getColor(vec4 id) {
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return isDirect ? id / 255. : texture2D(palette,
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vec2(
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(id.x + .5) / paletteSize.x,
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(id.y + .5) / paletteSize.y
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)
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);
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}
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void main() {
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// ignore inactive points
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if (isActive == 0.) return;
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vec2 position = vec2(x, y);
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vec2 positionFract = vec2(xFract, yFract);
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vec4 color = getColor(colorId);
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vec4 borderColor = getColor(borderColorId);
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float size = size * maxSize / 255.;
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float borderSize = borderSize * maxSize / 255.;
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gl_PointSize = (size + borderSize) * pixelRatio;
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vec2 pos = (position + translate) * scale
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+ (positionFract + translateFract) * scale
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+ (position + translate) * scaleFract
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+ (positionFract + translateFract) * scaleFract;
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gl_Position = vec4(pos * 2. - 1., 0, 1);
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fragBorderRadius = 1. - 2. * borderSize / (size + borderSize);
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fragColor = color;
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fragBorderColor = borderColor.a == 0. || borderSize == 0. ? vec4(color.rgb, 0.) : borderColor;
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fragWidth = 1. / gl_PointSize;
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}
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