From 15dcddc3c3c7072fb6b22df15602ae32bd5c37de Mon Sep 17 00:00:00 2001
From: casperlamboo <casperlamboo@gmail.com>
Date: Tue, 14 Nov 2017 17:42:08 +0100
Subject: [PATCH] add shape and image shape

---
 src/d2/ImageShape.js        |  43 +++++++++++++
 src/d2/Shape.js             | 119 ++++++++++++++++++++++++++++++++++++
 src/shape/shapeDataUtils.js |   2 +
 3 files changed, 164 insertions(+)
 create mode 100644 src/d2/ImageShape.js
 create mode 100644 src/d2/Shape.js

diff --git a/src/d2/ImageShape.js b/src/d2/ImageShape.js
new file mode 100644
index 0000000..76aaea2
--- /dev/null
+++ b/src/d2/ImageShape.js
@@ -0,0 +1,43 @@
+import { IMAGE_GUIDE_TRANSPARENCY, DESELECT_TRANSPARENCY } from '../constants/d2Constants.js';
+import { Surface } from 'cal';
+
+export default class ImageShape extends Surface {
+  constructor(shapeData) {
+    super();
+
+    this.depth = -1;
+    this.UID = shapeData.UID;
+
+    this.update(shapeData);
+    this.setOpaque(true);
+  }
+  update(newShapeData) {
+    let changed;
+
+    if (!this._shapeData || this._shapeData.transform !== newShapeData.transform) {
+      changed = true;
+      this.copyMatrix(newShapeData.transform);
+    }
+
+    if (!this._shapeData || this._shapeData.imageData !== newShapeData.imageData) {
+      changed = true;
+
+      const newImage = newShapeData.imageData;
+      const image = this._shapeData ? this._shapeData.imageData : {};
+
+      if (newImage.width !== image.width || newImage.height !== image.height) {
+        this.setSize(newImage.width, newImage.height);
+        this.centerX = newImage.width / 2;
+        this.centerY = newImage.height / 2;
+      }
+
+      this.context.drawImage(newImage, 0, 0, newImage.width, newImage.height);
+    }
+
+    this._shapeData = newShapeData;
+    return changed;
+  }
+  setOpaque(opaque) {
+    this.alpha = opaque ? IMAGE_GUIDE_TRANSPARENCY : DESELECT_TRANSPARENCY;
+  }
+}
diff --git a/src/d2/Shape.js b/src/d2/Shape.js
new file mode 100644
index 0000000..868ed4f
--- /dev/null
+++ b/src/d2/Shape.js
@@ -0,0 +1,119 @@
+import { shapeToPoints } from '../shape/shapeToPoints.js';
+import { shapeChanged } from '../shape/shapeDataUtils.js';
+import { Matrix } from 'cal';
+import { LINE_WIDTH } from '../constants/d2Constants.js';
+import { hexToStyle } from '../utils/colorUtils.js';
+import { DESELECT_TRANSPARENCY, FILL_TRANSPARENCY, LINE_TRANSPARENCY } from '../constants/d2Constants.js';
+import { PIXEL_RATIO } from '../constants/general.js';
+
+export default class Shape extends Matrix {
+  constructor(shapeData) {
+    super();
+
+    this.visible = true;
+    this.active = false;
+    this.depth = shapeData.height + shapeData.z;
+
+    this.color = '';
+
+    this.UID = shapeData.UID;
+
+    this.update(shapeData);
+    this.setOpaque(true);
+  }
+  update(shapeData) {
+    let changed = false;
+
+    this.depth = shapeData.height + shapeData.z;
+
+    if (!this._shapeData || shapeChanged(shapeData, this._shapeData)) {
+      this.shapes = shapeToPoints(shapeData);
+
+      changed = true;
+    }
+
+    if (!this._shapeData || this._shapeData.transform !== shapeData.transform) {
+      if (shapeData.transform.matrix.some(value => typeof value !== 'number' || isNaN(value))) {
+        throw new Error(`Cannot update object ${this.UID}: transform contains invalid values.`);
+      }
+
+      this.copyMatrix(shapeData.transform);
+
+      changed = true;
+    }
+
+    if (!this._shapeData || this._shapeData.color !== shapeData.color) {
+      if (typeof shapeData.color !== 'number' || isNaN(shapeData.color)) {
+        throw new Error(`Cannot update object ${this.UID}: color is an invalid value.`);
+      }
+      this.color = hexToStyle(shapeData.color);
+      changed = true;
+    }
+
+    this._shapeData = shapeData;
+    return changed;
+  }
+  setOpaque(opaque) {
+    const selectTransparency = this._shapeData.fill ? FILL_TRANSPARENCY : LINE_TRANSPARENCY;
+    this.alpha = opaque ? selectTransparency : DESELECT_TRANSPARENCY;
+  }
+  draw(context, matrix) {
+    context.beginPath();
+
+    for (let i = 0; i < this.shapes.length; i ++) {
+      const { points, holes } = this.shapes[i];
+
+      for (let j = 0; j < points.length; j ++) {
+        const point = points[j].applyMatrix(matrix);
+
+        if (j === 0) {
+          context.moveTo(point.x, point.y);
+        } else {
+          context.lineTo(point.x, point.y);
+        }
+      }
+
+      for (let j = 0; j < holes.length; j ++) {
+        const hole = holes[j];
+
+        for (let k = 0; k < hole.length; k ++) {
+          const point = hole[k].applyMatrix(matrix);
+
+          if (k === 0) {
+            context.moveTo(point.x, point.y);
+          } else {
+            context.lineTo(point.x, point.y);
+          }
+        }
+      }
+    }
+
+    context.lineCap = 'round';
+    context.lineJoin = 'round';
+
+    const lineWidth = PIXEL_RATIO * LINE_WIDTH;
+
+    context.globalAlpha = this.alpha;
+    if (this._shapeData.fill) {
+      context.fillStyle = this.color;
+      context.fill();
+
+      context.strokeStyle = 'black';
+      context.lineWidth = lineWidth / 2.0;
+      context.stroke();
+    } else {
+      const outerLineWidth = lineWidth * this.parent.sx;
+      const innerLineWidth = outerLineWidth - lineWidth;
+
+      context.strokeStyle = 'black';
+      context.lineWidth = outerLineWidth;
+      context.stroke();
+
+      if (innerLineWidth > 0) {
+        context.strokeStyle = this.color;
+        context.lineWidth = innerLineWidth;
+        context.stroke();
+      }
+    }
+  }
+}
diff --git a/src/shape/shapeDataUtils.js b/src/shape/shapeDataUtils.js
index 8067816..9ebff38 100644
--- a/src/shape/shapeDataUtils.js
+++ b/src/shape/shapeDataUtils.js
@@ -1,6 +1,8 @@
 import memoize from 'memoizee';
 import { Vector } from '@doodle3d/cal';
 import { SHAPE_CACHE_LIMIT } from '../constants/general.js';
+import ImageShape from '../d2/ImageShape.js';
+import Shape from '../d2/Shape.js';
 
 export function shapeChanged(oldShapeData, newShapeData) {
   const pointsChanged = oldShapeData.points !== newShapeData.points;