// Copyright (c) 2015 - 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
export default `\
uniform bool extruded;
uniform bool isWireframe;
uniform float elevationScale;
uniform float opacity;
in vec4 fillColors;
in vec4 lineColors;
in vec3 pickingColors;
out vec4 vColor;
struct PolygonProps {
vec3 positions;
vec3 positions64Low;
vec3 normal;
float elevations;
};
vec3 project_offset_normal(vec3 vector) {
if (project_uCoordinateSystem == COORDINATE_SYSTEM_LNGLAT ||
project_uCoordinateSystem == COORDINATE_SYSTEM_LNGLAT_OFFSETS) {
return normalize(vector * project_uCommonUnitsPerWorldUnit);
}
return project_normal(vector);
}
void calculatePosition(PolygonProps props) {
vec3 pos = props.positions;
vec3 pos64Low = props.positions64Low;
vec3 normal = props.normal;
vec4 colors = isWireframe ? lineColors : fillColors;
geometry.worldPosition = props.positions;
geometry.pickingColor = pickingColors;
if (extruded) {
pos.z += props.elevations * elevationScale;
}
gl_Position = project_position_to_clipspace(pos, pos64Low, vec3(0.), geometry.position);
DECKGL_FILTER_GL_POSITION(gl_Position, geometry);
if (extruded) {
#ifdef IS_SIDE_VERTEX
normal = project_offset_normal(normal);
#else
normal = project_normal(normal);
#endif
geometry.normal = normal;
vec3 lightColor = lighting_getLightColor(colors.rgb, project_uCameraPosition, geometry.position.xyz, geometry.normal);
vColor = vec4(lightColor, colors.a * opacity);
} else {
vColor = vec4(colors.rgb, colors.a * opacity);
}
DECKGL_FILTER_COLOR(vColor, geometry);
}
`;