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Add ANGLE_THRESHOLD constant

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Grant Sanderson
2023-01-09 10:52:12 -08:00
parent ccbb5534fa
commit ccf7a503c1
1 changed files with 4 additions and 2 deletions
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6
manimlib/shaders/quadratic_bezier_stroke/geom.glsl
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@ -42,8 +42,10 @@ const float AUTO_JOINT = 0;
const float ROUND_JOINT = 1; const float ROUND_JOINT = 1;
const float BEVEL_JOINT = 2; const float BEVEL_JOINT = 2;
const float MITER_JOINT = 3; const float MITER_JOINT = 3;
const float PI = 3.141592653; const float PI = 3.141592653;
const float DISJOINT_CONST = 404.0; const float DISJOINT_CONST = 404.0;
const float ANGLE_THRESHOLD = 1e-3;
#INSERT quadratic_bezier_geometry_functions.glsl #INSERT quadratic_bezier_geometry_functions.glsl
@ -56,7 +58,7 @@ void create_joint(float angle, vec2 unit_tan, float buff,
vec2 static_c0, out vec2 changing_c0, vec2 static_c0, out vec2 changing_c0,
vec2 static_c1, out vec2 changing_c1){ vec2 static_c1, out vec2 changing_c1){
float shift; float shift;
if(abs(angle) < 1e-3){ if(abs(angle) < ANGLE_THRESHOLD){
// No joint // No joint
shift = 0; shift = 0;
}else if(joint_type == MITER_JOINT){ }else if(joint_type == MITER_JOINT){
@ -131,7 +133,7 @@ int get_corners(
void main() { void main() {
if (distance(verts[0], verts[1]) == 0 && distance(verts[1], verts[2]) == 0) return; if (distance(verts[0], verts[1]) == 0 && distance(verts[1], verts[2]) == 0) return;
bezier_degree = (abs(v_joint_angle[1]) < 1e-3) ? 1.0 : 2.0; bezier_degree = (abs(v_joint_angle[1]) < ANGLE_THRESHOLD) ? 1.0 : 2.0;
vec3 unit_normal = get_unit_normal(vec3[3](verts[0], verts[1], verts[2])); vec3 unit_normal = get_unit_normal(vec3[3](verts[0], verts[1], verts[2]));
// Adjust stroke width based on distance from the camera // Adjust stroke width based on distance from the camera