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synced 2025-10-03 02:15:43 -04:00
added some more functions to the mesh drawer class.
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@ -52,6 +52,14 @@ INLINE MeshDrawer::
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// Access: Published
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// Description: Sets the number of images are on one side
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// of a sqare plate.
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// Geom drawer expects a plate of square image for
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// most of its billboard operatoins. If plate size is
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// 3 the frame numbering would look like this:
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// 0 1 2
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// 3 4 5
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// 6 7 8
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// you can select any frame you like for many of the
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// billboards and segments.
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////////////////////////////////////////////////////////////////////
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INLINE void MeshDrawer::
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set_plate_size(int one_side_size) {
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@ -84,7 +92,7 @@ get_root() {
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////////////////////////////////////////////////////////////////////
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// Function: MeshDrawer::set_budget
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// Access: Published
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// Description: Sets the total budget of particles.
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// Description: Sets the total triangle budget of the drawer.
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////////////////////////////////////////////////////////////////////
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INLINE void MeshDrawer::
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set_budget(int total_budget) {
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@ -95,7 +103,7 @@ set_budget(int total_budget) {
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////////////////////////////////////////////////////////////////////
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// Function: MeshDrawer::get_budget()
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// Access: Published
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// Description: Gets the total budget of particles.
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// Description: Gets the total triangle budget of the drawer
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////////////////////////////////////////////////////////////////////
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INLINE int MeshDrawer::
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get_budget() {
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@ -73,7 +73,7 @@ void MeshDrawer::generator(int budget) {
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_geomnode->add_geom(_geom);
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_root.attach_new_node(_geomnode);
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_last_clear_index = budget;
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delete tvertex;
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delete tnormal;
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delete tuv;
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@ -89,11 +89,11 @@ void MeshDrawer::begin(NodePath camera, NodePath render) {
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// sanity check
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assert(render.get_error_type() == NodePath::ET_ok);
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assert(camera.get_error_type() == NodePath::ET_ok);
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// remember our arguments
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_camera = camera;
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_render = render;
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// compute some help vectors
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_eyePos = camera.get_pos();
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_up = _render.get_relative_vector(camera, LVector3f(0, 0, 1));
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@ -102,7 +102,7 @@ void MeshDrawer::begin(NodePath camera, NodePath render) {
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_b2 = _right - _up;
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_b3 = _right + _up;
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_b4 = - _right + _up;
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// recreate our rewriters
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if (_vertex != NULL) delete _vertex;
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if (_normal != NULL) delete _normal;
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@ -113,7 +113,7 @@ void MeshDrawer::begin(NodePath camera, NodePath render) {
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_normal = new GeomVertexRewriter(_vdata, "normal");
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_color = new GeomVertexRewriter(_vdata, "color");
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_dprim = _prim->decompose();
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// reseta our clearning indexes
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_start_clear_index = 0;
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_end_clear_index = _budget;
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@ -152,7 +152,7 @@ void MeshDrawer::end() {
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// Description: Draws a particle that is sort of like a bill board
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// but has an extra rotation component.
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////////////////////////////////////////////////////////////////////
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void MeshDrawer::particle(LVector3f pos, int frame, float size, LVector4f _color, float rotation) {
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void MeshDrawer::particle(LVector3f pos, int frame, float size, LVector4f color, float rotation) {
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rotation = rotation / 57.29578;
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@ -165,13 +165,30 @@ void MeshDrawer::particle(LVector3f pos, int frame, float size, LVector4f _color
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float v = 1.0f-float(int(frame/_plate_size+1))*_frame_size;
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tri(
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v1, _color, LVector2f(u,v),
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v2, _color, LVector2f(u+_frame_size,v),
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v3, _color, LVector2f(u+_frame_size,v+_frame_size));
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v1, color, LVector2f(u,v),
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v2, color, LVector2f(u+_frame_size,v),
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v3, color, LVector2f(u+_frame_size,v+_frame_size));
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tri(
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v3, _color, LVector2f(u+_frame_size,v+_frame_size),
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v4, _color, LVector2f(u,v+_frame_size),
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v1, _color, LVector2f(u,v));
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v3, color, LVector2f(u+_frame_size,v+_frame_size),
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v4, color, LVector2f(u,v+_frame_size),
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v1, color, LVector2f(u,v));
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}
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////////////////////////////////////////////////////////////////////
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// Function: MeshDrawer::blended_particle
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// Access: Published
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// Description: Works just like particle but accepts 2 frames and
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// a blend (from 0 to 1) component between them
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////////////////////////////////////////////////////////////////////
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void MeshDrawer::blended_particle(LVector3f pos, int frame1, int frame2,
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float blend, float size, LVector4f color, float rotation) {
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float original_w = color.get_w();
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color.set_w((1.f-blend)*original_w);
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particle(pos,frame1,size,color,rotation);
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color.set_w(blend*original_w);
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particle(pos,frame2,size,color,rotation);
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}
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////////////////////////////////////////////////////////////////////
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@ -201,14 +218,27 @@ void MeshDrawer::billboard(LVector3f pos, int frame, float size, LVector4f _colo
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}
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////////////////////////////////////////////////////////////////////
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// Function: MeshDrawer::segment
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// Access: Published
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// Description: Draws a segment a line with a thickness.
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// Description: Draws a segment a line with a thickness. That has
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// billboarding effect.
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////////////////////////////////////////////////////////////////////
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void MeshDrawer::segment(LVector3f start, LVector3f stop, int frame,
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float thickness, LVector4f color) {
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link_segment(start, frame, thickness, color);
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link_segment(stop, frame, thickness, color);
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link_segment_end(frame, color);
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}
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////////////////////////////////////////////////////////////////////
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// Function: MeshDrawer::cross_segment
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// Access: Published
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// Description: Draws a segment a line with a thickness. This
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// segment does not use the bill boarding behavior
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// and instead draws 2 planes in a cross.
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////////////////////////////////////////////////////////////////////
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void MeshDrawer::cross_segment(LVector3f start, LVector3f stop, int frame,
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float thickness, LVector4f color) {
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float u = float(int(frame%_plate_size))*_frame_size;
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float v = 1.0f-float(int(frame/_plate_size+1))*_frame_size;
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@ -240,6 +270,8 @@ void MeshDrawer::segment(LVector3f start, LVector3f stop, int frame,
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}
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////////////////////////////////////////////////////////////////////
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// Function: MeshDrawer::uneven_segment
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// Access: Published
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@ -330,7 +362,7 @@ void MeshDrawer::stream(LVector3f start, LVector3f stop, int frame, float size,
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////////////////////////////////////////////////////////////////////
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void MeshDrawer::geometry(NodePath draw_node) {
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assert(_render.get_error_type() == NodePath::ET_ok);
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LVector4f color = LVector4f(1,1,1,1);
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LVector3f vec[3];
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LVector2f uv[3];
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@ -464,8 +496,8 @@ void MeshDrawer::link_segment(LVector3f pos, int frame,
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LVector3f v4 = _last_v4;
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// compute this frame
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float u = float(int(frame%_plate_size))*_frame_size;
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float v = 1.0f-float(int(frame/_plate_size+1))*_frame_size;
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float u = float(int(frame%_plate_size))*_frame_size;
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float v = 1.0f-float(int(frame/_plate_size+1))*_frame_size;
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tri(v1, _last_color, LVector2f(u,v),
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v2, color, LVector2f(u+_frame_size,v),
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@ -493,10 +525,10 @@ void MeshDrawer::link_segment(LVector3f pos, int frame,
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// two calls to link_segment before it can end
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// the linked segment.
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////////////////////////////////////////////////////////////////////
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void MeshDrawer::link_segment_end(LVector4f color, int frame)
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void MeshDrawer::link_segment_end(int frame, LVector4f color)
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{
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float u = float(int(frame%_plate_size))*_frame_size;
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float v = 1.0f-float(int(frame/_plate_size+1))*_frame_size;
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float u = float(int(frame%_plate_size))*_frame_size;
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float v = 1.0f-float(int(frame/_plate_size+1))*_frame_size;
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tri(_last_v1, _last_color, LVector2f(u,v),
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_last_v2, color, LVector2f(u+_frame_size,v),
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@ -504,6 +536,6 @@ void MeshDrawer::link_segment_end(LVector4f color, int frame)
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tri(_last_v3, color, LVector2f(u+_frame_size,v+_frame_size),
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_last_v4, _last_color, LVector2f(u,v+_frame_size),
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_last_v1, _last_color, LVector2f(u,v));
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_at_start = 0;
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}
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@ -41,7 +41,7 @@
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////////////////////////////////////////////////////////////////////
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// Class : MeshDrawer
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// Description :
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// Description :
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_GRUTIL MeshDrawer : public TypedObject {
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PUBLISHED:
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@ -60,15 +60,18 @@ PUBLISHED:
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LVector3f v2, LVector4f c2, LVector2f uv2,
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LVector3f v3, LVector4f c3, LVector2f uv3);
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void particle(LVector3f pos, int frame, float size, LVector4f color, float rotation);
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void blended_particle(LVector3f pos, int frame1, int frame2,
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float blend, float size, LVector4f color, float rotation);
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void billboard(LVector3f pos, int frame, float size, LVector4f color);
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void segment(LVector3f start, LVector3f stop, int frame, float thickness, LVector4f color);
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void cross_segment(LVector3f start, LVector3f stop, int frame, float thickness, LVector4f color);
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void uneven_segment(LVector3f start, LVector3f stop,
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int frame, int multi_frame,
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float thickness_start, LVector4f color_start,
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float thickness_stop, LVector4f color_stop);
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void link_segment(LVector3f pos, int frame, float thickness, LVector4f color);
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void link_segment_end(LVector4f color, int frame);
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void link_segment_end(int frame, LVector4f color);
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void explosion(LVector3f pos, int frame, float size, LVector4f color,
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int seed, int number, float distance);
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