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Add palette system

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This commit is contained in:
schmelczerandras 2020-09-23 16:27:02 +02:00
commit 98d1fc9ca2
1 changed files with 195 additions and 112 deletions
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42
src/graphics/rendering/uniforms-provider.ts
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@ -7,13 +7,12 @@ export class UniformsProvider {
private scaleWorldLengthToNDC = 1;
private transformWorldToNDC = mat2d.create();
private viewAreaBottomLeft = vec2.create();
private worldAreaInView = vec2.create();
private squareToAspectRatio = vec2.create();
private uvToWorld = mat2d.create();
public constructor(private gl: UniversalRenderingContext) {}
public constructor(private readonly gl: UniversalRenderingContext) {}
public getUniforms(uniforms: any): any {
return {
@ -23,34 +22,12 @@ export class UniformsProvider {
uvToWorld: this.uvToWorld,
worldAreaInView: this.worldAreaInView,
squareToAspectRatio: this.squareToAspectRatio,
squareToAspectRatioTimes2: vec2.scale(vec2.create(), this.squareToAspectRatio, 2),
scaleWorldLengthToNDC: this.scaleWorldLengthToNDC,
transformWorldToNDC: this.transformWorldToNDC,
squareToAspectRatioTimes2: vec2.scale(vec2.create(), this.squareToAspectRatio, 2),
};
}
private getScreenToWorldTransform(screenSize: vec2) {
const transform = mat2d.fromTranslation(mat2d.create(), this.viewAreaBottomLeft);
mat2d.scale(
transform,
transform,
vec2.divide(vec2.create(), this.worldAreaInView, screenSize)
);
mat2d.translate(transform, transform, vec2.fromValues(0.5, 0.5));
return transform;
}
public uvToWorldCoordinate(screenUvPosition: vec2): vec2 {
const resolution = vec2.fromValues(this.gl.canvas.width, this.gl.canvas.height);
return vec2.transformMat2d(
vec2.create(),
vec2.multiply(vec2.create(), screenUvPosition, resolution),
this.getScreenToWorldTransform(resolution)
);
}
public getViewArea(): vec2 {
return this.worldAreaInView;
}
@ -91,4 +68,19 @@ export class UniformsProvider {
this.uvToWorld = mat2d.fromTranslation(mat2d.create(), this.viewAreaBottomLeft);
mat2d.scale(this.uvToWorld, this.uvToWorld, this.worldAreaInView);
}
public screenToWorldPosition(screenPosition: vec2): vec2 {
const resolution = vec2.fromValues(this.gl.canvas.width, this.gl.canvas.height);
const transform = mat2d.fromTranslation(mat2d.create(), this.viewAreaBottomLeft);
mat2d.scale(
transform,
transform,
vec2.divide(vec2.create(), this.worldAreaInView, resolution)
);
mat2d.translate(transform, transform, vec2.fromValues(0.5, 0.5));
return vec2.transformMat2d(vec2.create(), screenPosition, transform);
}
}