Mercurial > gemma

annotate pkg/models/colors.go @ 4650:f5fce22184da stree-experiment

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Added a deserializer from STRTrees.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 14 Oct 2019 01:28:18 +0200
parents 04eba9dc917d
children 18d5461bec5d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3854
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2019 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13 // * Markus Kottländer <markus.kottlaender@intevation.de>
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14
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15 package models
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16
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17 import (
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18 "fmt"
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19 "image/color"
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20 "math"
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21 "sort"
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22 "strconv"
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23 "strings"
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24 )
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25
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26 type (
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27 ColorValue struct {
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28 Value float64
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29 Color color.RGBA
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30 }
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31
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32 ColorValues []ColorValue
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33
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34 ClassBreak struct {
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35 High float64
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36 HasHigh bool
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37 Low float64
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38 HasLow bool
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39 Col color.RGBA
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40 }
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41 )
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42
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43 func (cb *ClassBreak) Color() string {
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44 return fmt.Sprintf("#%02x%02x%02x",
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45 cb.Col.R,
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46 cb.Col.G,
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47 cb.Col.B,
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48 )
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49 }
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50
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51 func (cc ColorValues) ClassBreaks() []ClassBreak {
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52
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53 cbs := make([]ClassBreak, len(cc), len(cc)+1)
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54 for i := range cc {
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55 if i > 0 {
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56 cbs[i].Low = cc[i-1].Value
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57 cbs[i].HasLow = true
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58 }
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59 cbs[i].High = cc[i].Value
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60 cbs[i].HasHigh = true
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61 cbs[i].Col = cc[i].Color
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62 }
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63 if len(cc) > 0 {
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64 cbs = append(cbs, ClassBreak{
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65 Col: cc[len(cc)-1].Color,
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66 Low: cc[len(cc)-1].Value,
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67 HasLow: true,
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68 })
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69 }
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70
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71 return cbs
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72 }
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73
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74 func (cc ColorValues) Heights() []float64 {
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75 heights := make([]float64, len(cc))
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76 for i := range cc {
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77 heights[i] = cc[i].Value
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78 }
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79 return heights
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80 }
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81
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82 func (cc ColorValues) Clip(v float64) color.RGBA {
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83 if len(cc) == 0 {
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84 return color.RGBA{}
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85 }
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86 if v < cc[0].Value {
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87 return cc[0].Color
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88 }
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89 if v > cc[len(cc)-1].Value {
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90 return cc[len(cc)-1].Color
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91 }
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92 c, _ := cc.Interpolate(v)
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93 return c
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94 }
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95
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96 func (cc ColorValues) Interpolate(v float64) (color.RGBA, bool) {
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97 if len(cc) == 0 || v < cc[0].Value || v > cc[len(cc)-1].Value {
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98 return color.RGBA{}, false
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99 }
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parents:
diff changeset
100
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
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parents:
diff changeset
101 if len(cc) == 1 {
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parents:
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102 return cc[0].Color, cc[0].Value == v
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
103 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
104
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
105 for i := 0; i < len(cc)-1; i++ {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
106 v1 := cc[i].Value
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
107 v2 := cc[i+1].Value
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
108 if v1 <= v && v <= v2 {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
109 // f(v1) = 0
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
110 // f(v2) = 1
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
111 // 0 = m*v1 + c <=> c = -m*v1
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
112 // 1 = m*v2 + c
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
113 // (1 - 0) = m*(v2 - v1)
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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114 // m = 1/(v2 - v1) for v2 != v1
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parents:
diff changeset
115
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
116 if v1 == v2 {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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117 return color.RGBA{
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118 R: uint8((uint16(cc[i].Color.R) + uint16(cc[i+1].Color.R)) / 2),
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119 G: uint8((uint16(cc[i].Color.G) + uint16(cc[i+1].Color.G)) / 2),
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120 B: uint8((uint16(cc[i].Color.B) + uint16(cc[i+1].Color.B)) / 2),
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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121 A: 0xff,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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122 }, true
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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123 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
124 m := 1 / (v2 - v1)
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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125 c := -m * v1
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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126 s := v*m + c
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
127
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
128 interpolate := func(a, b uint8) uint8 {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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129 v := math.Round(float64(a) + (float64(b)-float64(a))*s)
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
130 if v < 0 {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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131 return 0
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 if v > 255 {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134 return 255
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
135 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
136 return uint8(v)
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
138
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
139 return color.RGBA{
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
140 R: interpolate(cc[i].Color.R, cc[i+1].Color.R),
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
141 G: interpolate(cc[i].Color.G, cc[i+1].Color.G),
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
142 B: interpolate(cc[i].Color.B, cc[i+1].Color.B),
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
143 A: 0xff,
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
144 }, true
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
145 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
146 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
147
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
148 return color.RGBA{}, false
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
149 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
150
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
151 func ParseColorValues(s string) (ColorValues, error) {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
152
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
153 var err error
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
154
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
155 parseFloat := func(s string) float64 {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
156 var v float64
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
157 if err == nil {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
158 v, err = strconv.ParseFloat(s, 64)
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
159 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
160 return v
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
161 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
163 parseColor := func(s string) color.RGBA {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
164 if err != nil {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
165 return color.RGBA{}
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
166 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
167 s = strings.Map(func(r rune) rune {
3897
859210ee6440 Cosmetics: Don't lower the runes in the color strings used in class break definitions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3854
diff changeset
168 if ('0' <= r && r <= '9') ||
859210ee6440 Cosmetics: Don't lower the runes in the color strings used in class break definitions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3854
diff changeset
169 ('a' <= r && r <= 'f') ||
859210ee6440 Cosmetics: Don't lower the runes in the color strings used in class break definitions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3854
diff changeset
170 ('A' <= r && r <= 'F') {
3854
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
171 return r
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
172 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
173 return -1
3897
859210ee6440 Cosmetics: Don't lower the runes in the color strings used in class break definitions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3854
diff changeset
174 }, s)
3854
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
175
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
176 var v int64
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
177 v, err = strconv.ParseInt(s, 16, 64)
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
178 return color.RGBA{
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
179 R: uint8(v >> 16),
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
180 G: uint8(v >> 8),
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
181 B: uint8(v >> 0),
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
182 A: 0xff,
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
183 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
184 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
185
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 lines := strings.Split(s, ",")
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
187
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 // first pass: find defined colors
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
189 var defined ColorValues
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
190
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191 for _, line := range lines {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
192 // ignore the lines w/o a color.
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
193 if !strings.ContainsRune(line, ':') {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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194 continue
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195 }
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196 parts := strings.SplitN(line, ":", 2)
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197 if len(parts) < 2 {
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198 continue
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199 }
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200 value := parseFloat(parts[0])
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201 color := parseColor(parts[1])
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202
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203 defined = append(defined, ColorValue{
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204 Value: value,
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205 Color: color,
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206 })
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207 }
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208
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209 if err != nil {
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210 return nil, err
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211 }
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212
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213 sort.Slice(defined, func(i, j int) bool {
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214 return defined[i].Value < defined[j].Value
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215 })
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216
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217 // second pass: interpolate the rest
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218 var final ColorValues
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219 for _, line := range lines {
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220 if idx := strings.IndexRune(line, ':'); idx >= 0 {
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221 line = line[:idx]
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222 }
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223 value := parseFloat(line)
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224 if color, ok := defined.Interpolate(value); ok {
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225 final = append(final, ColorValue{
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226 Value: value,
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227 Color: color,
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228 })
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229 }
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230 }
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parents:
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231
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232 return final, err
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233 }