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89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/*
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* Copyright 2022 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "material/palettes/core.h"
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#include <cmath>
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#include "material/cam/cam.h"
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#include "material/palettes/tones.h"
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namespace material_color_utilities {
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namespace {
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double PrimaryChroma(double chroma, bool is_content) {
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return is_content ? chroma : fmax(chroma, 48);
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}
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double SecondaryChroma(double chroma, bool is_content) {
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return is_content ? chroma / 3 : 16;
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}
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double TertiaryChroma(double chroma, bool is_content) {
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return is_content ? chroma / 2 : 24;
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}
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double NeutralChroma(double chroma, bool is_content) {
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return is_content ? fmin(chroma / 12, 4) : 4;
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}
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double NeutralVariantChroma(double chroma, bool is_content) {
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return is_content ? fmin(chroma / 6, 8) : 8;
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}
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} // namespace
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CorePalette::CorePalette(double hue, double chroma, bool is_content)
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: primary_(hue, PrimaryChroma(chroma, is_content)),
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secondary_(hue, SecondaryChroma(chroma, is_content)),
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tertiary_(hue + 60, TertiaryChroma(chroma, is_content)),
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neutral_(hue, NeutralChroma(chroma, is_content)),
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neutral_variant_(hue, NeutralVariantChroma(chroma, is_content)),
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error_(25, 84) {}
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CorePalette CorePalette::Of(double hue, double chroma) {
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return CorePalette(hue, chroma, false);
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}
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CorePalette CorePalette::ContentOf(double hue, double chroma) {
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return CorePalette(hue, chroma, true);
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}
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CorePalette CorePalette::Of(int argb) {
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Cam cam = CamFromInt(argb);
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return CorePalette(cam.hue, cam.chroma, false);
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}
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CorePalette CorePalette::ContentOf(int argb) {
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Cam cam = CamFromInt(argb);
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return CorePalette(cam.hue, cam.chroma, true);
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}
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TonalPalette CorePalette::primary() { return primary_; }
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TonalPalette CorePalette::secondary() { return secondary_; }
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TonalPalette CorePalette::tertiary() { return tertiary_; }
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TonalPalette CorePalette::neutral() { return neutral_; }
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TonalPalette CorePalette::neutral_variant() { return neutral_variant_; }
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TonalPalette CorePalette::error() { return error_; }
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} // namespace material_color_utilities
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