vis.js is a dynamic, browser-based visualization library
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  1. class NodeBase {
  2. constructor(options, body, labelModule) {
  3. this.body = body;
  4. this.labelModule = labelModule;
  5. this.setOptions(options);
  6. this.top = undefined;
  7. this.left = undefined;
  8. this.height = undefined;
  9. this.width = undefined;
  10. this.radius = undefined;
  11. this.boundingBox = {top: 0, left: 0, right: 0, bottom: 0};
  12. }
  13. setOptions(options) {
  14. this.options = options;
  15. }
  16. _distanceToBorder(angle) {
  17. var borderWidth = 1;
  18. return Math.min(
  19. Math.abs(this.width / 2 / Math.cos(angle)),
  20. Math.abs(this.height / 2 / Math.sin(angle))) + borderWidth;
  21. }
  22. enableShadow(ctx) {
  23. if (this.options.shadow.enabled === true) {
  24. ctx.shadowColor = 'rgba(0,0,0,0.5)';
  25. ctx.shadowBlur = this.options.shadow.size;
  26. ctx.shadowOffsetX = this.options.shadow.x;
  27. ctx.shadowOffsetY = this.options.shadow.y;
  28. }
  29. }
  30. disableShadow(ctx) {
  31. if (this.options.shadow.enabled === true) {
  32. ctx.shadowColor = 'rgba(0,0,0,0)';
  33. ctx.shadowBlur = 0;
  34. ctx.shadowOffsetX = 0;
  35. ctx.shadowOffsetY = 0;
  36. }
  37. }
  38. enableBorderDashes(ctx) {
  39. if (this.options.shapeProperties.borderDashes !== false) {
  40. if (ctx.setLineDash !== undefined) {
  41. let dashes = this.options.shapeProperties.borderDashes;
  42. if (dashes === true) {
  43. dashes = [5,15]
  44. }
  45. ctx.setLineDash(dashes);
  46. }
  47. else {
  48. console.warn("setLineDash is not supported in this browser. The dashed borders cannot be used.");
  49. this.options.shapeProperties.borderDashes = false;
  50. }
  51. }
  52. }
  53. disableBorderDashes(ctx) {
  54. if (this.options.shapeProperties.borderDashes !== false) {
  55. if (ctx.setLineDash !== undefined) {
  56. ctx.setLineDash([0]);
  57. }
  58. else {
  59. console.warn("setLineDash is not supported in this browser. The dashed borders cannot be used.");
  60. this.options.shapeProperties.borderDashes = false;
  61. }
  62. }
  63. }
  64. // possible cleanup for use in shapes
  65. cleanup() {}
  66. }
  67. export default NodeBase;