A pixel art painter geared specifically at NES pixel art. Includes export for .chr binary file as well as palette and namespace data.
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NESPainter.js 893B

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  1. export class NESPainter {
  2. constructor(canvas){
  3. this.__canvas = null;
  4. this.__context = null;
  5. this.__scale = 1.0; // This is the scale the painter will display source information.
  6. this.__offset = [0.0, 0.0]; // This is the X,Y offset from origin to display source information.
  7. if (!canvas)
  8. throw new Error("Expected a canvas element.");
  9. this.__canvas = canvas
  10. this.__context = this.__canvas.getContext("2d");
  11. if (!this.__context)
  12. throw new Error("Failed to obtain canvas context.");
  13. }
  14. get scale(){
  15. return this.__scale;
  16. }
  17. set scale(s){
  18. if (typeof(s) !== 'number')
  19. throw new TypeError("Expected number value.");
  20. this.__scale = Math.max(0.1, Math.min(100.0, s));
  21. }
  22. scale_up(amount=1){
  23. this.scale = this.scale + (amount*0.1);
  24. }
  25. scale_down(amount=1){
  26. this.scale = this.scale - (amount*0.1);
  27. }
  28. }