Lucas de Vries
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
#include "icon_node.h"
|
|
#include "render/driver.h"
|
|
#include "render/spritesheet.h"
|
|
#include "obj/object.h"
|
|
#include "frustum.h"
|
|
|
|
const double MinRenderDistanceFactor = 5000.0;
|
|
|
|
namespace scene {
|
|
|
|
|
|
IconNode::IconNode(const render::SpriteSheet* spriteSheet, unsigned spriteIndex) : sheet(spriteSheet), index(spriteIndex) {
|
|
setFlag(NF_NoMatrix, true);
|
|
if(spriteSheet->material.baseMat != render::MAT_Solid)
|
|
setFlag(NF_Transparent, true);
|
|
}
|
|
|
|
bool IconNode::preRender(render::RenderDriver& driver) {
|
|
auto fromCamera = abs_position + (driver.cam_facing * abs_scale) - driver.cam_pos;
|
|
sortDistance = fromCamera.getLength();
|
|
|
|
if(sortDistance < MinRenderDistanceFactor * abs_scale || !driver.getViewFrustum().overlaps(abs_position,abs_scale))
|
|
return false;
|
|
else
|
|
return true;
|
|
}
|
|
|
|
void IconNode::render(render::RenderDriver& driver) {
|
|
double iconScale = sortDistance * abs_scale * 0.25;
|
|
bool selected = false;
|
|
if(obj)
|
|
selected = obj->getFlag(objSelected);
|
|
if(selected)
|
|
iconScale *= 1.1;
|
|
|
|
//Calculate best-fit facing of the 2D sprite (Assuming the sprite is facing +x)
|
|
auto& cam_up = driver.cam_up;
|
|
auto& cam_facing = driver.cam_facing;
|
|
|
|
double rot;
|
|
|
|
vec3d obj_facing = rotation * vec3d::front();
|
|
double alongDot = cam_facing.dot(obj_facing);
|
|
|
|
//If it's facing along the camera vector, we can't get an accurate angle
|
|
if(alongDot > -0.999 && alongDot < 0.999) {
|
|
obj_facing -= cam_facing * alongDot;
|
|
obj_facing.normalize();
|
|
|
|
vec3d cam_right = cam_up.cross(cam_facing);
|
|
rot = acos(cam_right.dot(obj_facing));
|
|
if(cam_up.dot(obj_facing) < 0)
|
|
rot = -rot;
|
|
}
|
|
else {
|
|
//Point up when going away, down when coming toward
|
|
rot = alongDot > 0 ? pi * 0.5 : pi * -0.5;
|
|
}
|
|
|
|
driver.drawBillboard(abs_position, iconScale,
|
|
sheet->material, sheet->getSource(index), rot);
|
|
|
|
//TODO: Draw other icons based on group unit count
|
|
}
|
|
|
|
};
|