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fill_extrusion_program.ts
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fill_extrusion_program.ts
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import {patternUniformValues} from './pattern';
import {
Uniform1i,
Uniform1f,
Uniform2f,
Uniform3f
} from '../uniform_binding';
import {mat3, vec3} from 'gl-matrix';
import {extend} from '../../util/util';
import type {Context} from '../../gl/context';
import type {Painter} from '../painter';
import type {OverscaledTileID} from '../../source/tile_id';
import type {UniformValues, UniformLocations} from '../uniform_binding';
import type {CrossfadeParameters} from '../../style/evaluation_parameters';
import type {Tile} from '../../source/tile';
export type FillExtrusionUniformsType = {
'u_lightpos': Uniform3f;
'u_lightpos_globe': Uniform3f;
'u_lightintensity': Uniform1f;
'u_lightcolor': Uniform3f;
'u_vertical_gradient': Uniform1f;
'u_opacity': Uniform1f;
'u_fill_translate': Uniform2f;
'u_camera_pos_globe': Uniform3f;
};
export type FillExtrusionPatternUniformsType = {
'u_lightpos': Uniform3f;
'u_lightpos_globe': Uniform3f;
'u_lightintensity': Uniform1f;
'u_lightcolor': Uniform3f;
'u_height_factor': Uniform1f;
'u_vertical_gradient': Uniform1f;
'u_opacity': Uniform1f;
'u_fill_translate': Uniform2f;
'u_camera_pos_globe': Uniform3f;
// pattern uniforms:
'u_texsize': Uniform2f;
'u_image': Uniform1i;
'u_pixel_coord_upper': Uniform2f;
'u_pixel_coord_lower': Uniform2f;
'u_scale': Uniform3f;
'u_fade': Uniform1f;
};
const fillExtrusionUniforms = (context: Context, locations: UniformLocations): FillExtrusionUniformsType => ({
'u_lightpos': new Uniform3f(context, locations.u_lightpos),
'u_lightpos_globe': new Uniform3f(context, locations.u_lightpos_globe),
'u_lightintensity': new Uniform1f(context, locations.u_lightintensity),
'u_lightcolor': new Uniform3f(context, locations.u_lightcolor),
'u_vertical_gradient': new Uniform1f(context, locations.u_vertical_gradient),
'u_opacity': new Uniform1f(context, locations.u_opacity),
'u_fill_translate': new Uniform2f(context, locations.u_fill_translate),
'u_camera_pos_globe': new Uniform3f(context, locations.u_camera_pos_globe)
});
const fillExtrusionPatternUniforms = (context: Context, locations: UniformLocations): FillExtrusionPatternUniformsType => ({
'u_lightpos': new Uniform3f(context, locations.u_lightpos),
'u_lightpos_globe': new Uniform3f(context, locations.u_lightpos_globe),
'u_lightintensity': new Uniform1f(context, locations.u_lightintensity),
'u_lightcolor': new Uniform3f(context, locations.u_lightcolor),
'u_vertical_gradient': new Uniform1f(context, locations.u_vertical_gradient),
'u_height_factor': new Uniform1f(context, locations.u_height_factor),
'u_opacity': new Uniform1f(context, locations.u_opacity),
'u_fill_translate': new Uniform2f(context, locations.u_fill_translate),
'u_camera_pos_globe': new Uniform3f(context, locations.u_camera_pos_globe),
// pattern uniforms
'u_image': new Uniform1i(context, locations.u_image),
'u_texsize': new Uniform2f(context, locations.u_texsize),
'u_pixel_coord_upper': new Uniform2f(context, locations.u_pixel_coord_upper),
'u_pixel_coord_lower': new Uniform2f(context, locations.u_pixel_coord_lower),
'u_scale': new Uniform3f(context, locations.u_scale),
'u_fade': new Uniform1f(context, locations.u_fade)
});
const fillExtrusionUniformValues = (
painter: Painter,
shouldUseVerticalGradient: boolean,
opacity: number,
translate: [number, number],
cameraPosGlobe: vec3
): UniformValues<FillExtrusionUniformsType> => {
const light = painter.style.light;
const _lp = light.properties.get('position');
const lightPos = [_lp.x, _lp.y, _lp.z] as vec3;
const lightMat = mat3.create();
if (light.properties.get('anchor') === 'viewport') {
mat3.fromRotation(lightMat, -painter.transform.angle);
}
vec3.transformMat3(lightPos, lightPos, lightMat);
const transformedLightPos = painter.transform.transformLightDirection(lightPos);
const lightColor = light.properties.get('color');
return {
'u_lightpos': lightPos,
'u_lightpos_globe': transformedLightPos,
'u_lightintensity': light.properties.get('intensity'),
'u_lightcolor': [lightColor.r, lightColor.g, lightColor.b],
'u_vertical_gradient': +shouldUseVerticalGradient,
'u_opacity': opacity,
'u_fill_translate': translate,
'u_camera_pos_globe': cameraPosGlobe,
};
};
const fillExtrusionPatternUniformValues = (
painter: Painter,
shouldUseVerticalGradient: boolean,
opacity: number,
translate: [number, number],
cameraPosGlobe: vec3,
coord: OverscaledTileID,
crossfade: CrossfadeParameters,
tile: Tile
): UniformValues<FillExtrusionPatternUniformsType> => {
return extend(fillExtrusionUniformValues(painter, shouldUseVerticalGradient, opacity, translate, cameraPosGlobe),
patternUniformValues(crossfade, painter, tile),
{
'u_height_factor': -Math.pow(2, coord.overscaledZ) / tile.tileSize / 8
});
};
export {
fillExtrusionUniforms,
fillExtrusionPatternUniforms,
fillExtrusionUniformValues,
fillExtrusionPatternUniformValues
};