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234 lines
9.1 KiB
Clojure
234 lines
9.1 KiB
Clojure
;; This Source Code Form is subject to the terms of the Mozilla Public
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;; License, v. 2.0. If a copy of the MPL was not distributed with this
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;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
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;;
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;; Copyright (c) KALEIDOS INC
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(ns common-tests.geom-shapes-test
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(:require
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[app.common.geom.matrix :as gmt]
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[app.common.geom.point :as gpt]
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[app.common.geom.rect :as grc]
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[app.common.geom.shapes :as gsh]
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[app.common.geom.shapes.intersect :as gsin]
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[app.common.geom.shapes.transforms :as gsht]
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[app.common.math :as mth :refer [close?]]
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[app.common.types.modifiers :as ctm]
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[app.common.types.shape :as cts]
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[clojure.test :as t]))
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(def default-path
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[{:command :move-to :params {:x 0 :y 0}}
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{:command :line-to :params {:x 20 :y 20}}
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{:command :line-to :params {:x 30 :y 30}}
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{:command :curve-to :params {:x 40 :y 40 :c1x 35 :c1y 35 :c2x 45 :c2y 45}}
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{:command :close-path}])
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(defn create-test-shape
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([type] (create-test-shape type {}))
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([type params]
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(if (= type :path)
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(cts/setup-shape
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(into {:type :path
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:content (:content params default-path)}
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params))
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(cts/setup-shape
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(into {:type type
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:width 20
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:height 20}
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params)))))
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(t/deftest transform-shapes
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(t/testing "Shape without modifiers should stay the same"
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(t/are [type]
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(let [shape-before (create-test-shape type)
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shape-after (gsh/transform-shape shape-before)]
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(= shape-before shape-after))
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:rect :path))
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(t/testing "Transform shape with translation modifiers"
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(doseq [type [:rect :path]]
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(let [modifiers (ctm/move-modifiers (gpt/point 10 -10))
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shape-before (create-test-shape type {:modifiers modifiers})
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shape-after (gsh/transform-shape shape-before)]
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(t/is (not= shape-before shape-after))
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(t/is (close? (get-in shape-before [:selrect :x])
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(- 10 (get-in shape-after [:selrect :x]))))
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(t/is (close? (get-in shape-before [:selrect :y])
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(+ 10 (get-in shape-after [:selrect :y]))))
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(t/is (close? (get-in shape-before [:selrect :width])
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(get-in shape-after [:selrect :width])))
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(t/is (close? (get-in shape-before [:selrect :height])
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(get-in shape-after [:selrect :height]))))))
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(t/testing "Transform with empty translation"
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(t/are [type]
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(let [modifiers {:displacement (gmt/matrix)}
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shape-before (create-test-shape type {:modifiers modifiers})
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shape-after (gsh/transform-shape shape-before)]
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(t/are [prop]
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(t/is (close? (get-in shape-before [:selrect prop])
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(get-in shape-after [:selrect prop])))
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:x :y :width :height :x1 :y1 :x2 :y2))
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:rect :path))
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(t/testing "Transform shape with resize modifiers"
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(t/are [type]
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(let [modifiers (ctm/resize-modifiers (gpt/point 2 2) (gpt/point 0 0))
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shape-before (create-test-shape type {:modifiers modifiers})
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shape-after (gsh/transform-shape shape-before)]
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(t/is (not= shape-before shape-after))
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(t/is (close? (get-in shape-before [:selrect :x])
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(get-in shape-after [:selrect :x])))
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(t/is (close? (get-in shape-before [:selrect :y])
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(get-in shape-after [:selrect :y])))
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(t/is (close? (* 2 (get-in shape-before [:selrect :width]))
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(get-in shape-after [:selrect :width])))
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(t/is (close? (* 2 (get-in shape-before [:selrect :height]))
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(get-in shape-after [:selrect :height]))))
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:rect :path))
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(t/testing "Transform with empty resize"
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(t/are [type]
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(let [modifiers (ctm/resize-modifiers (gpt/point 1 1) (gpt/point 0 0))
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shape-before (create-test-shape type {:modifiers modifiers})
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shape-after (gsh/transform-shape shape-before)]
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(t/are [prop]
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(t/is (close? (get-in shape-before [:selrect prop])
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(get-in shape-after [:selrect prop])))
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:x :y :width :height :x1 :y1 :x2 :y2))
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:rect :path))
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(t/testing "Transform with resize=0"
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(let [modifiers (ctm/resize-modifiers (gpt/point 0 0) (gpt/point 0 0))
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shape-before (create-test-shape :rect {:modifiers modifiers})
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shape-after (gsh/transform-shape shape-before)]
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(t/is (close? (get-in shape-before [:selrect :width])
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(get-in shape-after [:selrect :width])))
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(t/is (close? (get-in shape-before [:selrect :height])
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(get-in shape-after [:selrect :height])))))
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(t/testing "Transform shape with rotation modifiers"
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(t/are [type]
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(let [shape-before (create-test-shape type)
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modifiers (ctm/rotation-modifiers shape-before (gsh/shape->center shape-before) 30)
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shape-before (assoc shape-before :modifiers modifiers)
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shape-after (gsh/transform-shape shape-before)]
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(t/is (close? (get-in shape-before [:selrect :x])
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(get-in shape-after [:selrect :x])))
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(t/is (close? (get-in shape-before [:selrect :y])
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(get-in shape-after [:selrect :y])))
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(t/is (= (count (:points shape-before)) (count (:points shape-after))))
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(for [idx (range 0 (count (:point shape-before)))]
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(do (t/is (not (close? (get-in shape-before [:points idx :x])
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(get-in shape-after [:points idx :x]))))
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(t/is (not (close? (get-in shape-before [:points idx :y])
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(get-in shape-after [:points idx :y])))))))
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:rect :path))
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(t/testing "Transform shape with rotation = 0 should leave equal selrect"
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(t/are [type]
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(let [shape-before (create-test-shape type)
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modifiers (ctm/rotation-modifiers shape-before (gsh/shape->center shape-before) 0)
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shape-after (gsh/transform-shape (assoc shape-before :modifiers modifiers))]
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(t/are [prop]
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(t/is (close? (get-in shape-before [:selrect prop])
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(get-in shape-after [:selrect prop])))
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:x :y :width :height :x1 :y1 :x2 :y2))
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:rect :path))
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(t/testing "Transform shape with invalid selrect fails gracefully"
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(t/are [type selrect]
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(let [modifiers (ctm/move-modifiers 0 0)
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shape-before (create-test-shape type {:selrect selrect})
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shape-after (gsh/transform-shape shape-before modifiers)]
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(t/is (grc/close-rect? (:selrect shape-before)
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(:selrect shape-after))))
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:rect (grc/make-rect 0 0 ##Inf ##Inf)
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:path (grc/make-rect 0 0 ##Inf ##Inf))))
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(t/deftest points-to-selrect
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(let [points [(gpt/point 0.5 0.5)
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(gpt/point -1 -2)
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(gpt/point 20 65.2)
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(gpt/point 12 -10)]
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result (grc/points->rect points)
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expect {:x -1, :y -10, :width 21, :height 75.2}]
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(t/is (= (:x expect) (:x result)))
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(t/is (= (:y expect) (:y result)))
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(t/is (= (:width expect) (:width result)))
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(t/is (= (:height expect) (:height result)))))
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(def g45 (mth/radians 45))
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(t/deftest points-transform-matrix
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(t/testing "Transform matrix"
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(t/are [selrect points expected]
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(let [result (gsht/transform-points-matrix selrect points)]
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(t/is (gmt/close? expected result)))
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;; No transformation
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(grc/make-rect 0 0 10 10)
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(-> (grc/make-rect 0 0 10 10)
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(grc/rect->points))
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(gmt/matrix)
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;; Displacement
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(grc/make-rect 0 0 10 10)
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(-> (grc/make-rect 20 20 10 10)
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(grc/rect->points))
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(gmt/matrix 1 0 0 1 20 20)
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;; Resize
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(grc/make-rect 0 0 10 10)
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(-> (grc/make-rect 0 0 20 40)
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(grc/rect->points))
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(gmt/matrix 2 0 0 4 0 0)
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;; Displacement+Resize
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(grc/make-rect 0 0 10 10)
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(-> (grc/make-rect 10 10 20 40)
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(grc/rect->points))
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(gmt/matrix 2 0 0 4 10 10)
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;; Rotation
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(grc/make-rect 0 0 10 10)
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(-> (grc/make-rect 0 0 10 10)
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(grc/rect->points)
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(gsh/transform-points (gmt/rotate-matrix 45)))
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(gmt/matrix (mth/cos g45) (mth/sin g45) (- (mth/sin g45)) (mth/cos g45) 0 0)
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;; Rotation + Resize
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(grc/make-rect 0 0 10 10)
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(-> (grc/make-rect 0 0 20 40)
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(grc/rect->points)
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(gsh/transform-points (gmt/rotate-matrix 45)))
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(gmt/matrix (* (mth/cos g45) 2) (* (mth/sin g45) 2) (* (- (mth/sin g45)) 4) (* (mth/cos g45) 4) 0 0))))
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(t/deftest shape-has-point-pred
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(let [{:keys [points] :as shape} (create-test-shape :rect {})
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point1 (first points)
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point2 (update point1 :x - 100)]
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(t/is (true? (gsin/fast-has-point? shape point1)))
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(t/is (true? (gsin/slow-has-point? shape point1)))
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(t/is (false? (gsin/fast-has-point? shape point2)))
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(t/is (false? (gsin/fast-has-point? shape point2)))))
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