mirror of
https://github.com/OpenSpace/OpenSpace.git
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132 lines
4.5 KiB
GLSL
132 lines
4.5 KiB
GLSL
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2016 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#version __CONTEXT__
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in vec4 in_point_position;
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uniform vec3 color;
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out vec4 vs_point_position;
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flat out int isHour;
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out vec4 vs_point_color;
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uniform mat4 ViewProjection;
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uniform mat4 ModelTransform;
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uniform vec4 objectVelocity;
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uniform vec4 lastPosition;
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//this function does not consider cases where w component is negative
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float psc_distance(vec4 v1, vec4 v2) {
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// reduce position numbers
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/*while(v1.w > 1 && v2.w > 1) {
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v1.w -= 1;
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v2.w -= 1;
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} */
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// get position in vec3
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if (v1.w > 1) {
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float f = floor(v1.w);
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v1.xyz *= pow(10, f);
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v1.w -= f;
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}
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if (v2.w > 1) {
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float f = floor(v2.w);
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v2.xyz *= pow(10, f);
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v2.w -= f;
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}
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// using native distance function
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return distance(v1.xyz, v2.xyz);
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}
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#include "PowerScaling/powerScaling_vs.hglsl"
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void main() {
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vec4 gray = vec4(0.6f, 0.6f, 0.6f, 0.8f);
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float cameraTooFar = 1 * pow(k, 10);
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float bigPoint = 5.f;
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float smallPoint = 2.f;
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vec4 tmp = in_point_position;
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vec4 position = pscTransform(tmp, ModelTransform);
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vs_point_position = tmp;
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position = ViewProjection * position;
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gl_Position = z_normalization(position);
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int id = gl_VertexID;
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float hour = mod(id, 4);
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vs_point_color.xyz = color;
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vs_point_color[3] = 1.f;
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vec4 v1 = campos;
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vec4 v2 = vs_point_position;
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float cameraDistance = psc_distance(v1,v2);
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vec4 temp = in_point_position;
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vec4 templast = lastPosition;
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if (temp.w > 1) {
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float f = floor(temp.w);
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temp.w -= f;
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temp.xyz *= pow(10, f);
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}
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if (templast.w > 1) {
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float f = floor(templast.w);
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templast.w -= f;
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templast.xyz *= pow(10, f);
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}
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// while(temp.w > 1) {
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// temp.xyz *= 10;
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// temp.w -= 1;
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// }
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// while(templast.w > 1) {
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// templast.xyz *= 10;
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// templast.w -= 1;
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// }
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float observerDistance = length(temp.xyz);
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float lastDistance = length(templast.xyz);
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if(hour > 0.1f) {
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isHour = 0;
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vs_point_color = gray;
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gl_PointSize = bigPoint;
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}
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else {
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isHour = 1;
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gl_PointSize = bigPoint;
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}
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if (observerDistance > (lastDistance/20)) {
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gl_PointSize = smallPoint;
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//vs_point_color = gray;
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}
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/*if (cameraDistance > cameraTooFar ) {
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vs_point_color[3] = 0.0f;
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}*/
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} |